first commit of free version

LICENSE.txt

@@ -0,0 +1,340 @@
+GNU GENERAL PUBLIC LICENSE
+				Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+				Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+			GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+	a) You must cause the modified files to carry prominent notices
+	stating that you changed the files and the date of any change.
+
+	b) You must cause any work that you distribute or publish, that in
+	whole or in part contains or is derived from the Program or any
+	part thereof, to be licensed as a whole at no charge to all third
+	parties under the terms of this License.
+
+	c) If the modified program normally reads commands interactively
+	when run, you must cause it, when started running for such
+	interactive use in the most ordinary way, to print or display an
+	announcement including an appropriate copyright notice and a
+	notice that there is no warranty (or else, saying that you provide
+	a warranty) and that users may redistribute the program under
+	these conditions, and telling the user how to view a copy of this
+	License.  (Exception: if the Program itself is interactive but
+	does not normally print such an announcement, your work based on
+	the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+	a) Accompany it with the complete corresponding machine-readable
+	source code, which must be distributed under the terms of Sections
+	1 and 2 above on a medium customarily used for software interchange; or,
+
+	b) Accompany it with a written offer, valid for at least three
+	years, to give any third party, for a charge no more than your
+	cost of physically performing source distribution, a complete
+	machine-readable copy of the corresponding source code, to be
+	distributed under the terms of Sections 1 and 2 above on a medium
+	customarily used for software interchange; or,
+
+	c) Accompany it with the information you received as to the offer
+	to distribute corresponding source code.  (This alternative is
+	allowed only for noncommercial distribution and only if you
+	received the program in object code or executable form with such
+	an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+				NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+			 END OF TERMS AND CONDITIONS
+
+		How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+	<one line to give the program's name and a brief idea of what it does.>
+	Copyright (C) <year>  <name of author>
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+	Gnomovision version 69, Copyright (C) year name of author
+	Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+	This is free software, and you are welcome to redistribute it
+	under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.

README.md

@@ -0,0 +1,34 @@
+# Questions and Answers (1.0.x)
+
+This is a [Joomla 3.x](http://www.joomla.org/) component.
+
+ ![Questions and Answers image](https://raw.githubusercontent.com/vdm-io/Joomla-Questions-and-Answers/master/admin/assets/images/vdm-component.jpg "The Questions and Answers")
+
+Just a basic Questions & Answers.
+
+# Build Details
+
++ *Company*: [Vast Development Method](https://www.vdm.io/)
++ *Author*: [Llewellyn van der Merwe](mailto:joomla@vdm.io)
++ *Name*: [Questions and Answers](https://www.vdm.io/)
++ *First Build*: 30th January, 2017
++ *Last Build*: 24th April, 2018
++ *Version*: 1.0.x
++ *Copyright*: Copyright (C) 2015. All Rights Reserved
++ *License*: GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
+
+# Component Number
+
++ *Line count*: **27783**
++ *File count*: **201**
++ *Folder count*: **62**
+
+> This **component** was build with a Joomla [Automated Component Builder](http://vdm.bz/component-builder).
+> Developed by [Llewellyn van der Merwe](mailto:joomla@vdm.io)
+
+## Donations
+
+If you want to support this project, please consider donating:
+* PayPal: [paypal.me/asseblief](https://www.paypal.me/asseblief)
+* Bitcoin: 18vURxYpPFjvNk8BnUy1ovCAyQmY3MzkSf
+* Ethereum: 0x9548144662b47327c954f3e214edb96662d51218 

admin/README.txt

@@ -0,0 +1,34 @@
+# Questions and Answers (1.0.x)
+
+This is a [Joomla 3.x](http://www.joomla.org/) component.
+
+ ![Questions and Answers image](https://raw.githubusercontent.com/vdm-io/Joomla-Questions-and-Answers/master/admin/assets/images/vdm-component.jpg "The Questions and Answers")
+
+Just a basic Questions & Answers.
+
+# Build Details
+
++ *Company*: [Vast Development Method](https://www.vdm.io/)
++ *Author*: [Llewellyn van der Merwe](mailto:joomla@vdm.io)
++ *Name*: [Questions and Answers](https://www.vdm.io/)
++ *First Build*: 30th January, 2017
++ *Last Build*: 24th April, 2018
++ *Version*: 1.0.x
++ *Copyright*: Copyright (C) 2015. All Rights Reserved
++ *License*: GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
+
+# Component Number
+
++ *Line count*: **27783**
++ *File count*: **201**
++ *Folder count*: **62**
+
+> This **component** was build with a Joomla [Automated Component Builder](http://vdm.bz/component-builder).
+> Developed by [Llewellyn van der Merwe](mailto:joomla@vdm.io)
+
+## Donations
+
+If you want to support this project, please consider donating:
+* PayPal: [paypal.me/asseblief](https://www.paypal.me/asseblief)
+* Bitcoin: 18vURxYpPFjvNk8BnUy1ovCAyQmY3MzkSf
+* Ethereum: 0x9548144662b47327c954f3e214edb96662d51218 

admin/access.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<access component="com_questionsanswers">
+	<section name="component">
+		<action name="core.admin" title="JACTION_ADMIN" description="JACTION_ADMIN_COMPONENT_DESC" />
+		<action name="core.options" title="JACTION_OPTIONS" description="JACTION_OPTIONS_COMPONENT_DESC" />
+		<action name="core.manage" title="JACTION_MANAGE" description="JACTION_MANAGE_COMPONENT_DESC" />
+		<action name="core.export" title="COM_QUESTIONSANSWERS_EXPORT_DATA" description="COM_QUESTIONSANSWERS_EXPORT_DATA_DESC" />
+		<action name="core.import" title="COM_QUESTIONSANSWERS_IMPORT_DATA" description="COM_QUESTIONSANSWERS_IMPORT_DATA_DESC" />
+		<action name="core.batch" title="COM_QUESTIONSANSWERS_USE_BATCH" description="COM_QUESTIONSANSWERS_USE_BATCH_DESC" />
+		<action name="core.version" title="COM_QUESTIONSANSWERS_EDIT_VERSIONS" description="COM_QUESTIONSANSWERS_EDIT_VERSIONS_DESC" />
+		<action name="core.create" title="JACTION_CREATE" description="JACTION_CREATE_COMPONENT_DESC" />
+		<action name="core.delete" title="JACTION_DELETE" description="JACTION_DELETE_COMPONENT_DESC" />
+		<action name="core.edit" title="JACTION_EDIT" description="JACTION_EDIT_COMPONENT_DESC" />
+		<action name="core.edit.state" title="JACTION_EDITSTATE" description="JACTION_ACCESS_EDITSTATE_DESC" />
+		<action name="core.edit.own" title="JACTION_EDITOWN" description="JACTION_EDITOWN_COMPONENT_DESC" />
+		<action name="core.edit.created_by" title="COM_QUESTIONSANSWERS_EDIT_CREATED_BY" description="COM_QUESTIONSANSWERS_EDIT_CREATED_BY_DESC" />
+		<action name="core.edit.created" title="COM_QUESTIONSANSWERS_EDIT_CREATED_DATE" description="COM_QUESTIONSANSWERS_EDIT_CREATED_DATE_DESC" />
+		<action name="help_document.access" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_ACCESS" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_ACCESS_DESC" />
+		<action name="help_document.batch" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_BATCH_USE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_BATCH_USE_DESC" />
+		<action name="help_document.create" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_CREATE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_CREATE_DESC" />
+		<action name="help_document.dashboard_list" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_DASHBOARD_LIST" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_DASHBOARD_LIST_DESC" />
+		<action name="help_document.delete" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_DELETE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_DELETE_DESC" />
+		<action name="help_document.edit" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_DESC" />
+		<action name="help_document.edit.own" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_OWN" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_OWN_DESC" />
+		<action name="help_document.edit.state" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_STATE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_STATE_DESC" />
+		<action name="help_document.version" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_VERSION" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_VERSION_DESC" />
+		<action name="help_document.export" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EXPORT" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EXPORT_DESC" />
+		<action name="help_document.import" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_IMPORT" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_IMPORT_DESC" />
+		<action name="help_document.submenu" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_SUBMENU" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_SUBMENU_DESC" />
+		<action name="question_and_answer.access" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_ACCESS" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_ACCESS_DESC" />
+		<action name="question_and_answer.batch" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_BATCH_USE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_BATCH_USE_DESC" />
+		<action name="question_and_answer.create" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_CREATE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_CREATE_DESC" />
+		<action name="question_and_answer.dashboard_add" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DASHBOARD_ADD" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DASHBOARD_ADD_DESC" />
+		<action name="question_and_answer.dashboard_list" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DASHBOARD_LIST" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DASHBOARD_LIST_DESC" />
+		<action name="question_and_answer.delete" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DELETE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DELETE_DESC" />
+		<action name="question_and_answer.edit" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_DESC" />
+		<action name="question_and_answer.edit.answer" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER_DESC" />
+		<action name="question_and_answer.edit.answer_documents" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER_DOCUMENTS" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER_DOCUMENTS_DESC" />
+		<action name="question_and_answer.edit.catid" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CATID" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CATID_DESC" />
+		<action name="question_and_answer.edit.created_by" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_BY" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_BY_DESC" />
+		<action name="question_and_answer.edit.created" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_DATE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_DATE_DESC" />
+		<action name="question_and_answer.edit.main_image_uploader" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_MAIN_IMAGE_UPLOADER" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_MAIN_IMAGE_UPLOADER_DESC" />
+		<action name="question_and_answer.edit.own" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_OWN" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_OWN_DESC" />
+		<action name="question_and_answer.edit.question" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_QUESTION" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_QUESTION_DESC" />
+		<action name="question_and_answer.edit.state" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_STATE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_STATE_DESC" />
+		<action name="question_and_answer.version" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_VERSION" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_VERSION_DESC" />
+		<action name="question_and_answer.export" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EXPORT" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EXPORT_DESC" />
+		<action name="question_and_answer.import" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_IMPORT" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_IMPORT_DESC" />
+		<action name="question_and_answer.submenu" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_SUBMENU" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_SUBMENU_DESC" />
+	</section>
+	<section name="question_and_answer">
+		<action name="question_and_answer.edit" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_DESC" />
+		<action name="question_and_answer.edit.own" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_OWN" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_OWN_DESC" />
+		<action name="question_and_answer.edit.state" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_STATE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_STATE_DESC" />
+		<action name="question_and_answer.edit.created_by" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_BY" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_BY_DESC" />
+		<action name="question_and_answer.edit.created" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_DATE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CREATED_DATE_DESC" />
+		<action name="question_and_answer.create" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_CREATE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_CREATE_DESC" />
+		<action name="question_and_answer.delete" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DELETE" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_DELETE_DESC" />
+		<action name="question_and_answer.access" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_ACCESS" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_ACCESS_DESC" />
+		<action name="question_and_answer.edit.question" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_QUESTION" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_QUESTION_DESC" />
+		<action name="question_and_answer.edit.answer" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER_DESC" />
+		<action name="question_and_answer.edit.catid" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CATID" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_CATID_DESC" />
+		<action name="question_and_answer.edit.answer_documents" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER_DOCUMENTS" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_ANSWER_DOCUMENTS_DESC" />
+		<action name="question_and_answer.edit.main_image_uploader" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_MAIN_IMAGE_UPLOADER" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_MAIN_IMAGE_UPLOADER_DESC" />
+		<action name="question_and_answer.version" title="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_VERSION" description="COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS_EDIT_VERSION_DESC" />
+	</section>
+	<section name="help_document">
+		<action name="help_document.edit" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_DESC" />
+		<action name="help_document.edit.own" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_OWN" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_OWN_DESC" />
+		<action name="help_document.edit.state" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_STATE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_STATE_DESC" />
+		<action name="help_document.create" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_CREATE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_CREATE_DESC" />
+		<action name="help_document.delete" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_DELETE" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_DELETE_DESC" />
+		<action name="help_document.access" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_ACCESS" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_ACCESS_DESC" />
+		<action name="help_document.version" title="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_VERSION" description="COM_QUESTIONSANSWERS_HELP_DOCUMENTS_EDIT_VERSION_DESC" />
+	</section>
+	<section name="category.questions_and_answers">
+		<action name="core.create" title="JACTION_CREATE" description="JACTION_CREATE_COMPONENT_DESC" />
+		<action name="core.delete" title="JACTION_DELETE" description="COM_CATEGORIES_ACCESS_DELETE_DESC" />
+		<action name="core.edit" title="JACTION_EDIT" description="COM_CATEGORIES_ACCESS_EDIT_DESC" />
+		<action name="core.edit.state" title="JACTION_EDITSTATE" description="COM_CATEGORIES_ACCESS_EDITSTATE_DESC" />
+		<action name="core.edit.own" title="JACTION_EDITOWN" description="COM_CATEGORIES_ACCESS_EDITOWN_DESC" />
+	</section>
+</access>

admin/assets/css/admin.css

@@ -0,0 +1,29 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		admin.css
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* CSS Document */
+.no-click {
+	pointer-events: none;
+}
+

admin/assets/css/dashboard.css

@@ -0,0 +1,177 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		dashboard.css
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* CSS Document */
+
+.dashboard-container {
+    margin-left: 10px;
+    margin-top: 10px;
+    width: 100%;
+}
+.dashboard-container [class*="span"] {
+    display: block;
+    float: none;
+    margin-left: 0;
+    width: auto;
+}
+.dashboard-container:before, .dashboard-container:after {
+    content: "";
+    display: table;
+}
+.dashboard-container:after {
+    clear: both;
+}
+.dashboard-container [class*="span"] {
+    box-sizing: border-box;
+    display: block;
+    float: left;
+    min-height: 145px;
+    min-width: 96px;
+    width: 100%;
+}
+.dashboard-container [class*="span"]:first-child {
+    margin-left: 0;
+}
+.dashboard-wraper {
+    background: none repeat scroll 0 0 hsl(0, 0%, 93%);
+    border-radius: 5px;
+    float: left;
+    margin: 1%;
+    padding: 3px;
+    width: 17%;
+    min-height: 194px;
+    min-width: 96px;
+}
+.dashboard-content a {
+    background: linear-gradient(to bottom, hsl(0, 0%, 100%) 0%, hsl(0, 0%, 96%) 47%, hsl(0, 0%, 93%) 100%) repeat scroll 0 0 hsla(0, 0%, 0%, 0);
+    border: 1px solid hsl(0, 0%, 85%);
+    border-radius: 4px;
+    box-shadow: 0 0 3px hsla(0, 0%, 0%, 0.1) inset;
+    color: hsl(0, 0%, 20%);
+    display: block;
+    min-height: 89px;
+    padding: 10px;
+    text-align: center;
+    text-decoration: none;
+}
+.dashboard-content a:hover {
+    background: linear-gradient(to bottom, hsl(0, 0%, 90%) 0%, hsl(0, 0%, 100%) 100%) repeat scroll 0 0 hsla(0, 0%, 0%, 0);
+    color: hsl(200, 100%, 30%);
+    text-decoration: none;
+}
+.dashboard-title {
+    display: block;
+    padding-top: 5px;
+}
+.dashboard-info {
+    background: linear-gradient(to bottom, hsl(0, 0%, 100%) 0%, hsl(0, 0%, 96%) 47%, hsl(0, 0%, 93%) 100%) repeat scroll 0 0 hsla(0, 0%, 0%, 0);
+    border: 1px solid hsl(0, 0%, 85%);
+    border-radius: 4px;
+    box-shadow: 0 0 3px hsla(0, 0%, 0%, 0.1) inset;
+    color: hsl(0, 0%, 20%);
+    display: block;
+    font-size: 12px;
+    padding: 10px;
+    text-align: center;
+}
+.dashboard-info span {
+    display: block;
+    text-align: center;
+}
+.dashboard-info img {
+    margin: 0 auto;
+}
+.dashboard-table {
+    border-top: 1px solid hsl(0, 0%, 87%);
+    margin-top: 5px;
+    width: 100%;
+}
+.dashboard-info h5 {
+    font-size: 11px;
+    font-weight: bold;
+}
+.dashboard-block {
+    background: linear-gradient(to bottom, hsl(0, 0%, 95%) 0%, hsl(0, 0%, 86%) 100%) repeat scroll 0 0 hsla(0, 0%, 0%, 0);
+    border: 1px solid hsl(0, 0%, 76%);
+    border-radius: 3px;
+    box-shadow: 0 1px 0 hsl(0, 0%, 98%) inset;
+    margin-bottom: 20px;
+}
+.dashboard-block .dashboard-block-head {
+    background: linear-gradient(to bottom, hsl(0, 0%, 95%) 0%, hsl(0, 0%, 86%) 100%) repeat scroll 0 0 hsla(0, 0%, 0%, 0);
+    border-bottom: 1px solid hsl(0, 0%, 76%);
+    border-radius: 3px 3px 0 0;
+    box-shadow: 0 1px 0 hsl(0, 0%, 98%) inset, 0 0 3px hsl(0, 0%, 87%);
+    height: 40px;
+    position: relative;
+}
+.dashboard-block .dashboard-block-head h5 {
+    font-size: 12px;
+    margin: 0;
+    padding-left: 10px;
+    padding-top: 11px;
+    text-transform: uppercase;
+}
+.dashboard-block .dashboard-block-content {
+    background: none repeat scroll 0 0 hsl(0, 0%, 93%);
+    border-radius: 0 0 3px 3px;
+}
+.dashboard-block .dashboard-block-box {
+    background: none repeat scroll 0 0 hsl(0, 0%, 100%);
+    border-top: 1px solid hsl(0, 0%, 82%);
+    box-shadow: 0 0 5px hsl(0, 0%, 87%) inset;
+}
+.dashboard-block .dashboard-block-content .dashboard-block-box {
+    margin-top: 0 !important;
+}
+.dashboard-block .dashboard-block-content .dashboard-block-box .dashboard-block-table {
+    margin-bottom: 0 !important;
+}
+.dashboard-block-table {
+    background-color: hsla(0, 0%, 0%, 0);
+    border-collapse: collapse;
+    border-spacing: 0;
+    margin-bottom: 20px;
+    max-width: 100%;
+    width: 100%;
+}
+.dashboard-block-table th, .dashboard-block-table td {
+    border-top: 1px solid hsl(0, 0%, 87%);
+    line-height: 20px;
+    padding: 5px;
+    text-align: left;
+    vertical-align: middle;
+}
+.dashboard-badge {
+    background-color: hsl(0, 0%, 60%);
+    border-radius: 9px;
+    color: hsl(0, 0%, 100%);
+    font-size: 11.844px;
+    font-weight: bold;
+    line-height: 14px;
+    padding: 1px 9px 2px;
+    text-shadow: 0 -1px 0 hsla(0, 0%, 0%, 0.25);
+    vertical-align: baseline;
+    white-space: nowrap;
+}

admin/assets/css/help_document.css

@@ -0,0 +1,27 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		help_document.css
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* CSS Document */
+
+

admin/assets/css/help_documents.css

@@ -0,0 +1,27 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		help_documents.css
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* CSS Document */
+
+

admin/assets/css/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/assets/css/question_and_answer.css

@@ -0,0 +1,30 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		question_and_answer.css
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* CSS Document */
+
+
+#jform_question {
+    height: 100px;
+}

admin/assets/css/questions_and_answers.css

@@ -0,0 +1,27 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		questions_and_answers.css
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* CSS Document */
+
+

admin/assets/images/icons/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/assets/images/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/assets/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/assets/js/admin.js

@@ -0,0 +1,25 @@
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		admin.js
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+/* JS Document */

admin/assets/js/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/config.xml

@@ -0,0 +1,252 @@
+<?xml version="1.0" encoding="utf-8"?>
+<config>
+	<fieldset
+		addrulepath="/administrator/components/com_questionsanswers/models/rules"
+		addfieldpath="/administrator/components/com_questionsanswers/models/fields"
+		name="global_config"
+		label="COM_QUESTIONSANSWERS_CONFIG_GLOBAL_LABEL"
+		description="COM_QUESTIONSANSWERS_CONFIG_GLOBAL_DESC">
+		<field
+			name="check_in"
+			type="list"
+			default="0"
+			label="COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_DESC">
+			<option
+				value="-5 hours">COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_OPTION_ONE</option>
+			<option
+				value="-12 hours">COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_OPTION_TWO</option>
+			<option
+				value="-1 day">COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_OPTION_THREE</option>
+			<option
+				value="-2 day">COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_OPTION_FOUR</option>
+			<option
+				value="-1 week">COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_OPTION_FIVE</option>
+			<option
+				value="0">COM_QUESTIONSANSWERS_CONFIG_CHECK_TIMER_OPTION_SIX</option>
+		</field>
+		<field type="spacer" name="spacerAuthor" hr="true" />
+		<field
+			name="save_history"
+			type="radio"
+			class="btn-group btn-group-yesno"
+			default="1"
+			label="JGLOBAL_SAVE_HISTORY_OPTIONS_LABEL"
+			description="JGLOBAL_SAVE_HISTORY_OPTIONS_DESC"
+			>
+			<option value="1">JYES</option>
+			<option value="0">JNO</option>
+		</field>
+		<field
+			name="history_limit"
+			type="text"
+			filter="integer"
+			label="JGLOBAL_HISTORY_LIMIT_OPTIONS_LABEL"
+			description="JGLOBAL_HISTORY_LIMIT_OPTIONS_DESC"
+			default="10"
+		/>
+		<field type="spacer" name="spacerHistory" hr="true" />
+		<field name="autorTitle"
+			type="spacer"
+			label="COM_QUESTIONSANSWERS_CONFIG_AUTHOR"
+		/>
+		<field name="autorName"
+			type="text"
+			label="COM_QUESTIONSANSWERS_CONFIG_AUTHOR_NAME_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_AUTHOR_NAME_DESC"
+			size="60"
+			default="Llewellyn van der Merwe"
+			readonly="true"
+			class="readonly"
+		/>
+		<field name="autorEmail"
+			type="email"
+			label="COM_QUESTIONSANSWERS_CONFIG_AUTHOR_EMAIL_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_AUTHOR_EMAIL_DESC"
+			size="60"
+			default="joomla@vdm.io"
+			readonly="true"
+			class="readonly"
+		/>
+	</fieldset>
+	<fieldset
+		name="uikit_config"
+		label="COM_QUESTIONSANSWERS_CONFIG_UIKIT_LABEL"
+		description="COM_QUESTIONSANSWERS_CONFIG_UIKIT_DESC">
+		<field name="uikit_load"
+			type="radio"
+			label="COM_QUESTIONSANSWERS_CONFIG_UIKIT_LOAD_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_UIKIT_LOAD_DESC"
+			class="btn-group btn-group-yesno"
+			default="">
+			<!-- Option Set. -->
+			<option value="">
+				COM_QUESTIONSANSWERS_CONFIG_AUTO_LOAD</option>"
+			<option value="1">
+				COM_QUESTIONSANSWERS_CONFIG_FORCE_LOAD</option>"
+			<option value="3">
+				COM_QUESTIONSANSWERS_CONFIG_ONLY_EXTRA</option>"
+			<option value="2">
+				COM_QUESTIONSANSWERS_CONFIG_DONT_LOAD</option>"
+		</field>
+		<field name="uikit_min"
+			type="radio"
+			label="COM_QUESTIONSANSWERS_CONFIG_UIKIT_MIN_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_UIKIT_MIN_DESC"
+			class="btn-group btn-group-yesno"
+			default="">
+			<!-- Option Set. -->
+			<option value="">
+				COM_QUESTIONSANSWERS_CONFIG_NO</option>"
+			<option value=".min">
+				COM_QUESTIONSANSWERS_CONFIG_YES</option>"
+		</field>
+		<field name="uikit_style"
+			type="radio"
+			label="COM_QUESTIONSANSWERS_CONFIG_UIKIT_STYLE_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_UIKIT_STYLE_DESC"
+			class="btn-group btn-group-yesno"
+			default="">
+			<!-- Option Set. -->
+			<option value="">
+				COM_QUESTIONSANSWERS_CONFIG_FLAT_LOAD</option>"
+			<option value=".almost-flat">
+				COM_QUESTIONSANSWERS_CONFIG_ALMOST_FLAT_LOAD</option>"
+			<option value=".gradient">
+				COM_QUESTIONSANSWERS_CONFIG_GRADIANT_LOAD</option>"
+		</field>
+	</fieldset>
+	<fieldset
+		name="encryption_config"
+		label="COM_QUESTIONSANSWERS_CONFIG_ENCRYPTION_LABEL"
+		description="COM_QUESTIONSANSWERS_CONFIG_ENCRYPTION_DESC">
+		<field type="note" name="basic_key_note" class="alert alert-info" label="COM_QUESTIONSANSWERS_CONFIG_BASIC_KEY_NOTE_LABEL" description="COM_QUESTIONSANSWERS_CONFIG_BASIC_KEY_NOTE_DESC"  />
+		<field name="basic_key"
+			type="text"
+			label="COM_QUESTIONSANSWERS_CONFIG_BASIC_KEY_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_BASIC_KEY_DESC"
+			size="60"
+			default=""
+		/>
+	</fieldset>
+	<fieldset
+		name="media_custom_config"
+		label="COM_QUESTIONSANSWERS_CONFIG_MEDIA">
+
+		<!-- Document_formats Field. Type: List. (joomla) -->
+		<field
+			type="list"
+			name="document_formats"
+			label="COM_QUESTIONSANSWERS_CONFIG_DOCUMENT_FORMATS_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_DOCUMENT_FORMATS_DESCRIPTION"
+			class="list_class"
+			multiple="true"
+			filter="ARRAY">
+			<!-- Option Set. -->
+			<option value="doc">
+				COM_QUESTIONSANSWERS_CONFIG_DOC</option>
+			<option value="docx">
+				COM_QUESTIONSANSWERS_CONFIG_DOCX</option>
+			<option value="odt">
+				COM_QUESTIONSANSWERS_CONFIG_ODT</option>
+			<option value="pdf">
+				COM_QUESTIONSANSWERS_CONFIG_PDF</option>
+			<option value="csv">
+				COM_QUESTIONSANSWERS_CONFIG_CSV</option>
+			<option value="xls">
+				COM_QUESTIONSANSWERS_CONFIG_XLS</option>
+			<option value="xlsx">
+				COM_QUESTIONSANSWERS_CONFIG_XLSX</option>
+			<option value="ods">
+				COM_QUESTIONSANSWERS_CONFIG_ODS</option>
+			<option value="ppt">
+				COM_QUESTIONSANSWERS_CONFIG_PPT</option>
+			<option value="pptx">
+				COM_QUESTIONSANSWERS_CONFIG_PPTX</option>
+			<option value="pps">
+				COM_QUESTIONSANSWERS_CONFIG_PPS</option>
+			<option value="ppsx">
+				COM_QUESTIONSANSWERS_CONFIG_PPSX</option>
+			<option value="odp">
+				COM_QUESTIONSANSWERS_CONFIG_ODP</option>
+			<option value="zip">
+				COM_QUESTIONSANSWERS_CONFIG_ZIP</option>
+		</field>
+		<!-- Image_formats Field. Type: List. (joomla) -->
+		<field
+			type="list"
+			name="image_formats"
+			label="COM_QUESTIONSANSWERS_CONFIG_IMAGE_FORMATS_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_IMAGE_FORMATS_DESCRIPTION"
+			class="list_class"
+			multiple="true"
+			filter="ARRAY">
+			<!-- Option Set. -->
+			<option value="jpg">
+				COM_QUESTIONSANSWERS_CONFIG_JPG</option>
+			<option value="jpeg">
+				COM_QUESTIONSANSWERS_CONFIG_JPEG</option>
+			<option value="gif">
+				COM_QUESTIONSANSWERS_CONFIG_GIF</option>
+			<option value="png">
+				COM_QUESTIONSANSWERS_CONFIG_PNG</option>
+		</field>
+		<!-- Spacer_hr Field. Type: Spacer. A None Database Field. (joomla) -->
+		<field type="spacer" name="spacer_hr" hr="true" class="spacer_hr" />
+		<!-- Crop_main Field. Type: Radio. (joomla) -->
+		<field
+			type="radio"
+			name="crop_main"
+			label="COM_QUESTIONSANSWERS_CONFIG_CROP_MAIN_LABEL"
+			description="COM_QUESTIONSANSWERS_CONFIG_CROP_MAIN_DESCRIPTION"
+			class="btn-group btn-group-yesno"
+			default="0">
+			<!-- Option Set. -->
+			<option value="1">
+				COM_QUESTIONSANSWERS_CONFIG_YES</option>
+			<option value="0">
+				COM_QUESTIONSANSWERS_CONFIG_NO</option>
+		</field>
+		<!-- Main_width Field. Type: Text. (joomla) -->
+		<field
+			type="text"
+			name="main_width"
+			label="COM_QUESTIONSANSWERS_CONFIG_MAIN_WIDTH_LABEL"
+			size="50"
+			maxlength="150"
+			class="text_area"
+			filter="INT"
+			hint="COM_QUESTIONSANSWERS_CONFIG_MAIN_WIDTH_HINT"
+			showon="crop_main:1"
+			onchange="if(!jQuery(this).val().match(/^\d+$/)){jQuery(this).val('')};"
+		/>
+		<!-- Main_height Field. Type: Text. (joomla) -->
+		<field
+			type="text"
+			name="main_height"
+			label="COM_QUESTIONSANSWERS_CONFIG_MAIN_HEIGHT_LABEL"
+			size="50"
+			maxlength="150"
+			class="text_area"
+			filter="INT"
+			hint="COM_QUESTIONSANSWERS_CONFIG_MAIN_HEIGHT_HINT"
+			showon="crop_main:1"
+			onchange="if(!jQuery(this).val().match(/^\d+$/)){jQuery(this).val('')};"
+		/>
+	</fieldset>
+	<fieldset
+		name="permissions"
+		label="JCONFIG_PERMISSIONS_LABEL"
+		description="JCONFIG_PERMISSIONS_DESC">
+		<field
+			name="rules"
+			type="rules"
+			label="JCONFIG_PERMISSIONS_LABEL"
+			class="inputbox"
+			validate="rules"
+			filter="rules"
+			component="com_questionsanswers"
+			section="component"
+		/>
+	</fieldset>
+</config>

admin/controller.php

@@ -0,0 +1,128 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		controller.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controller library
+jimport('joomla.application.component.controller');
+
+/**
+ * General Controller of Questionsanswers component
+ */
+class QuestionsanswersController extends JControllerLegacy
+{
+	/**
+	 * Constructor.
+	 *
+	 * @param   array  $config  An optional associative array of configuration settings.
+	 * Recognized key values include 'name', 'default_task', 'model_path', and
+	 * 'view_path' (this list is not meant to be comprehensive).
+	 *
+	 * @since   3.0
+	 */
+	public function __construct($config = array())
+	{
+		// set the default view
+		$config['default_view'] = 'questionsanswers';
+
+		parent::__construct($config);
+	}
+
+	/**
+	 * display task
+	 *
+	 * @return void
+	 */
+	function display($cachable = false, $urlparams = false)
+	{
+		// set default view if not set
+		$view   = $this->input->getCmd('view', 'questionsanswers');
+		$data	= $this->getViewRelation($view);
+		$layout	= $this->input->get('layout', null, 'WORD');
+		$id    	= $this->input->getInt('id');
+
+		// Check for edit form.
+		if(QuestionsanswersHelper::checkArray($data))
+		{
+			if ($data['edit'] && $layout == 'edit' && !$this->checkEditId('com_questionsanswers.edit.'.$data['view'], $id))
+			{
+				// Somehow the person just went to the form - we don't allow that.
+				$this->setError(JText::sprintf('JLIB_APPLICATION_ERROR_UNHELD_ID', $id));
+				$this->setMessage($this->getError(), 'error');
+				// check if item was opend from other then its own list view
+				$ref 	= $this->input->getCmd('ref', 0);
+				$refid 	= $this->input->getInt('refid', 0);
+				// set redirect
+				if ($refid > 0 && QuestionsanswersHelper::checkString($ref))
+				{
+					// redirect to item of ref
+					$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view='.(string)$ref.'&layout=edit&id='.(int)$refid, false));
+				}
+				elseif (QuestionsanswersHelper::checkString($ref))
+				{
+
+					// redirect to ref
+					$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view='.(string)$ref, false));
+				}
+				else
+				{
+					// normal redirect back to the list view
+					$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view='.$data['views'], false));
+				}
+
+				return false;
+			}
+		}
+
+		return parent::display($cachable, $urlparams);
+	}
+
+	protected function getViewRelation($view)
+	{
+		// check the we have a value
+		if (QuestionsanswersHelper::checkString($view))
+		{
+			// the view relationships
+			$views = array(
+				'question_and_answer' => 'questions_and_answers',
+				'help_document' => 'help_documents'
+					);
+			// check if this is a list view
+			if (in_array($view, $views))
+			{
+				// this is a list view
+				return array('edit' => false, 'view' => array_search($view,$views), 'views' => $view);
+			}
+			// check if it is an edit view
+			elseif (array_key_exists($view, $views))
+			{
+				// this is a edit view
+				return array('edit' => true, 'view' => $view, 'views' => $views[$view]);
+			}
+		}
+		return false;
+	}
+}

admin/controllers/ajax.json.php

@@ -0,0 +1,155 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		ajax.json.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controllerform library
+jimport('joomla.application.component.controller');
+
+/**
+ * Questionsanswers Ajax Controller
+ */
+class QuestionsanswersControllerAjax extends JControllerLegacy
+{
+	public function __construct($config)
+	{
+		parent::__construct($config);
+		// make sure all json stuff are set
+		JFactory::getDocument()->setMimeEncoding( 'application/json' );
+		JResponse::setHeader('Content-Disposition','attachment;filename="getajax.json"');
+		JResponse::setHeader("Access-Control-Allow-Origin", "*");
+		// load the tasks 
+		$this->registerTask('uploadfile', 'ajax');
+		$this->registerTask('removeFile', 'ajax');
+	}
+
+	public function ajax()
+	{
+		$user 		= JFactory::getUser();
+		$jinput 	= JFactory::getApplication()->input;
+		// Check Token!
+		$token 		= JSession::getFormToken();
+		$call_token	= $jinput->get('token', 0, 'ALNUM');
+		if($token == $call_token)
+		{
+			$task = $this->getTask();
+			switch($task)
+			{
+				case 'uploadfile':
+					try
+					{
+						$returnRaw = $jinput->get('raw', false, 'BOOLEAN');
+						$targetValue = $jinput->get('target', NULL, 'WORD');
+						$typeValue = $jinput->get('type', NULL, 'WORD');
+						if($targetValue && $typeValue && $user->id != 0)
+						{
+							$result = $this->getModel('ajax')->uploadfile($targetValue, $typeValue);
+						}
+						else
+						{
+							$result = false;
+						}
+						if($callback = $jinput->get('callback', null, 'CMD'))
+						{
+							echo $callback . "(".json_encode($result).");";
+						}
+						elseif($returnRaw)
+						{
+							echo json_encode($result);
+						}
+						else
+						{
+							echo "(".json_encode($result).");";
+						}
+					}
+					catch(Exception $e)
+					{
+						if($callback = $jinput->get('callback', null, 'CMD'))
+						{
+							echo $callback."(".json_encode($e).");";
+						}
+						else
+						{
+							echo "(".json_encode($e).");";
+						}
+					}
+				break;
+				case 'removeFile':
+					try
+					{
+						$returnRaw = $jinput->get('raw', false, 'BOOLEAN');
+						$filenameValue = $jinput->get('filename', NULL, 'STRING');
+						$targetValue = $jinput->get('target', NULL, 'WORD');
+						$flushValue = $jinput->get('flush', NULL, 'INT');
+						$typeValue = $jinput->get('type', NULL, 'WORD');
+						if($filenameValue && $targetValue && $flushValue && $typeValue && $user->id != 0)
+						{
+							$result = $this->getModel('ajax')->removeFile($filenameValue, $targetValue, $flushValue, $typeValue);
+						}
+						else
+						{
+							$result = false;
+						}
+						if($callback = $jinput->get('callback', null, 'CMD'))
+						{
+							echo $callback . "(".json_encode($result).");";
+						}
+						elseif($returnRaw)
+						{
+							echo json_encode($result);
+						}
+						else
+						{
+							echo "(".json_encode($result).");";
+						}
+					}
+					catch(Exception $e)
+					{
+						if($callback = $jinput->get('callback', null, 'CMD'))
+						{
+							echo $callback."(".json_encode($e).");";
+						}
+						else
+						{
+							echo "(".json_encode($e).");";
+						}
+					}
+				break;
+			}
+		}
+		else
+		{
+			if($callback = $jinput->get('callback', null, 'CMD'))
+			{
+				echo $callback."(".json_encode(false).");";
+			}
+			else
+			{
+				echo "(".json_encode(false).");";
+			}
+		}
+	}
+}

admin/controllers/download.php

@@ -0,0 +1,214 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		download.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controllerform library
+jimport('joomla.application.component.controller');
+
+/**
+ * Questionsanswers Download Controller
+ */
+class QuestionsanswersControllerDownload extends JControllerLegacy
+{	
+	public function __construct($config)
+	{
+		parent::__construct($config);
+		// load the tasks 
+		$this->registerTask('document', 'download');
+		$this->registerTask('media', 'download');
+		// load params
+		$this->app_params = JComponentHelper::getParams('com_questionsanswers');
+		// set link options
+		$this->linkoptions = $this->setLinkOptions();
+	}
+	
+	public function download()
+	{
+		// get input values
+		$this->input		= JFactory::getApplication()->input;
+		// Check Token!
+		$token 		= JSession::getFormToken();
+		$call_token	= $this->input->get('token', 0, 'ALNUM');
+		if($token === $call_token || $this->linkoptions['session'] == 0)
+        {
+			// get the task
+			$task	= $this->getTask();
+			switch($task)
+			{
+				case 'document':
+				case 'media':
+					if ($file = $this->input->get('file', NULL, 'STRING'))
+					{
+						// only continue if the file exists
+						if ($details = $this->getFileDetails($file, $task))
+						{
+							// set headers
+							$app = JFactory::getApplication();
+							$app->setHeader('Accept-ranges', 'bytes', true);
+							$app->setHeader('Connection', 'keep-alive', true);
+							$app->setHeader('Content-Encoding', 'none', true);
+							$app->setHeader('Content-disposition', 'attachment; filename="'.$details['filename'].'";', true);
+							$app->setHeader('Content-Type', '"'.$details['type'].'"', true);
+							$app->setHeader('Content-Length', (int) $details['size'], true);
+							$app->setHeader('Content-Size', (int) $details['size'], true);
+							$app->setHeader('Content-security-policy', 'referrer no-referrer', true);
+							$app->setHeader('Content-Name', '"'.$details['name'].'"', true);
+							$app->setHeader('Content-Version', '1.0', true);
+							$app->setHeader('Content-Vendor', '"'.$details['vendor'].'"', true);
+							$app->setHeader('Content-URL', '"'.JUri::getInstance().'"', true);
+							$app->setHeader('cache-control', 'max-age=0', true);
+							$app->setHeader('x-robots-tag', 'noindex, nofollow, noimageindex', true);
+							$app->setHeader('x-content-security-policy', 'referrer no-referrer', true);
+							$app->setHeader('x-webkit-csp', 'referrer no-referrer', true);
+							$app->setHeader('x-content-security-policy', 'referrer no-referrer', true);
+							// get the file
+							readfile($details['link']); 
+							$app->sendHeaders();
+							$app->close();
+							jexit();
+						}
+					}
+				break;
+			}
+			jexit('Download error, please try again later! If the problem continues contact your system administrator.');
+		}
+		jexit(JText::_('JINVALID_TOKEN'));
+	}
+	
+	/**
+	 * @return array of link options
+	 */
+	protected function setLinkOptions()
+	{
+		$linkoptions = $this->app_params->get('link_option', null);
+		// set the options to array
+		$options = array('lock' => 0, 'session' => 0);
+		if (QuestionsanswersHelper::checkArray($linkoptions))
+		{
+			if (in_array(1, $linkoptions))
+			{
+				// unlock the filename
+				$options['lock'] = 1;
+			}
+			if (in_array(2, $linkoptions))
+			{
+				// check session of the links
+				$options['session'] = 1;
+			}
+		}
+		return $options;
+	}
+	
+	protected function getFileDetails($lockedString, $type)
+	{
+		// check if we have a filename
+		if (QuestionsanswersHelper::checkString($lockedString))
+		{
+			// Get the basic encryption.
+			$basickey = QuestionsanswersHelper::getCryptKey('basic');
+			// check if encryption is available
+			if ($this->linkoptions['lock'] && $basickey)
+			{
+				// Get the encryption object.
+				$basic = new FOFEncryptAes($basickey, 128);
+				// get file name
+				$filename = rtrim($basic->decryptString(QuestionsanswersHelper::base64_urldecode($lockedString)), "\0");
+			}
+			else
+			{
+				// get file name
+				$filename = QuestionsanswersHelper::base64_urldecode($lockedString, true);
+			}
+			// check if we still have the correct filename convention to work with
+			if (QuestionsanswersHelper::checkString($filename) && strpos($filename, '_') !== false && strpos($filename, 'VDM') !== false)
+			{
+				// get the file path
+				$filePath = QuestionsanswersHelper::getFolderPath('path', 'hiddenfilepath');
+				// get file formate from file name
+				$filenameArray = (array) explode('_', $filename);
+				// get name from file name
+				$nameArray = (array) explode('VDM', $filename);
+				// now load the format
+				if (count($filenameArray) > 2)
+				{
+					// set the format
+					$format = (string) $filenameArray[2];
+				}
+				else
+				{
+					return false;
+				}
+				// now load the name
+				if (count($nameArray) > 1)
+				{
+					// set the name
+					$name = (string) $nameArray[1];
+				}
+				else
+				{
+					return false;
+				}
+				
+				
+				// start details array
+				$details = array();
+				// load the link
+				$details['link'] = $filePath.$filename.'.'.$format;
+				// check if file exists
+				if (file_exists($details['link']))
+				{
+					// get Site name
+					$config = JFactory::getConfig();
+					$details['vendor'] = $config->get('sitename');
+					// set the size
+					$details['size'] = filesize($details['link']);					
+					// set the file name
+					$details['filename'] = $name.'.'.$format;
+					// set the content name
+					$details['name'] = $name;
+					// set the file type
+					$details['type'] = QuestionsanswersHelper::mimeType($details['link']);
+					// count the downloaded
+					$this->countDownload($name.'.'.$format);
+					// return set details
+					return $details;
+				}
+			}
+		}
+		return false;
+	}
+	
+	// Only counts the download if the helper class exist
+	protected function countDownload($name)
+	{
+		if (method_exists('QuestionsanswersHelper','countLocalDownload'))
+		{
+			// count the download of the local item
+			QuestionsanswersHelper::countLocalDownload($name, $this->input);
+		}
+	}
+}

admin/controllers/help.php

@@ -0,0 +1,130 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		help.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controllerform library
+jimport('joomla.application.component.controller');
+
+/**
+ * Questionsanswers Help Controller
+ */
+class QuestionsanswersControllerHelp extends JControllerLegacy
+{
+	public function __construct($config)
+	{
+		parent::__construct($config);
+		// load the tasks
+		$this->registerTask('getText', 'help');
+	}
+
+	public function help()
+	{
+		$user 		= JFactory::getUser();
+		$jinput 	= JFactory::getApplication()->input;
+		// Check Token!
+		$token 		= JSession::getFormToken();
+		$call_token	= $jinput->get('token', 0, 'ALNUM');
+		if($user->id != 0 && $token == $call_token)
+		{
+			$task = $this->getTask();
+			switch($task){
+				case 'getText':
+					try
+					{
+						$idValue = $jinput->get('id', 0, 'INT');
+						if($idValue)
+						{
+							$result = $this->getHelpDocumentText($idValue);
+						}
+						else
+						{
+							$result = '';
+						}
+						echo $result;
+						// stop execution gracefully
+						jexit();
+					}
+					catch(Exception $e)
+					{
+						// stop execution gracefully
+						jexit();
+					}
+				break;
+			}
+		}
+ 		else
+		{
+			// stop execution gracefully
+			jexit();
+		}
+	}
+
+	protected function getHelpDocumentText($id)
+	{
+		$db		= JFactory::getDbo();
+		$query	= $db->getQuery(true);
+		$query->select(array('a.title','a.content'));
+		$query->from('#__questionsanswers_help_document AS a');
+		$query->where('a.id = '.(int) $id);
+		$query->where('a.published = 1');
+		$db->setQuery($query);
+		$db->execute();
+		if($db->getNumRows())
+		{
+			$text = array();
+			$document = $db->loadObject();
+			// fix image issue
+			$images['src="images'] = 'src="'.JURI::root().'images';
+			$images["src='images"] = "src='".JURI::root()."images";
+			$images['src="/images'] = 'src="'.JURI::root().'images';
+			$images["src='/images"] = "src='".JURI::root()."images";
+			// set document template
+			$text[] = "<!doctype html>";
+			$text[] = '<html>';
+			$text[] = "<head>";
+			$text[] = '<meta charset="utf-8">';
+			$text[] = "<title>".$document->title."</title>";
+			$text[] = '<link type="text/css" href="'.JURI::root().'media/com_questionsanswers/uikit/css/uikit.gradient.min.css" rel="stylesheet"></link>';
+			$text[] = '<script type="text/javascript" src="'.JURI::root().'media/com_questionsanswers/uikit/js/uikit.min.js"></script>';
+			$text[] = "</head>";
+			$text[] = '<body><br />';
+			$text[] = '<div class="uk-container uk-container-center uk-grid-collapse">';
+			$text[] = '<div class="uk-panel uk-width-1-1 uk-panel-box uk-panel-box-primary">';
+			// build the help text
+			$text[] = '<h1 class="uk-panel-title">'.$document->title."</h1>";
+			$text[] = str_replace(array_keys($images),array_values($images),$document->content);
+			// end template
+			$text[] = '</div><br /><br />';
+			$text[] = '</div>';
+			$text[] = "</body>";
+			$text[] = "</html>";
+
+			return implode("\n",$text);
+		}
+		return false;
+	}
+}

admin/controllers/help_document.php

@@ -0,0 +1,326 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		help_document.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controllerform library
+jimport('joomla.application.component.controllerform');
+
+/**
+ * Help_document Controller
+ */
+class QuestionsanswersControllerHelp_document extends JControllerForm
+{
+	/**
+	 * Current or most recently performed task.
+	 *
+	 * @var    string
+	 * @since  12.2
+	 * @note   Replaces _task.
+	 */
+	protected $task;
+
+	public function __construct($config = array())
+	{
+		$this->view_list = 'Help_documents'; // safeguard for setting the return view listing to the main view.
+		parent::__construct($config);
+	}
+
+        /**
+	 * Method override to check if you can add a new record.
+	 *
+	 * @param   array  $data  An array of input data.
+	 *
+	 * @return  boolean
+	 *
+	 * @since   1.6
+	 */
+	protected function allowAdd($data = array())
+	{
+		// Access check.
+		$access = JFactory::getUser()->authorise('help_document.access', 'com_questionsanswers');
+		if (!$access)
+		{
+			return false;
+		}
+		// In the absense of better information, revert to the component permissions.
+		return JFactory::getUser()->authorise('help_document.create', $this->option);
+	}
+
+	/**
+	 * Method override to check if you can edit an existing record.
+	 *
+	 * @param   array   $data  An array of input data.
+	 * @param   string  $key   The name of the key for the primary key.
+	 *
+	 * @return  boolean
+	 *
+	 * @since   1.6
+	 */
+	protected function allowEdit($data = array(), $key = 'id')
+	{
+		// get user object.
+		$user		= JFactory::getUser();
+		// get record id.
+		$recordId	= (int) isset($data[$key]) ? $data[$key] : 0;
+
+
+		// Access check.
+		$access = ($user->authorise('help_document.access', 'com_questionsanswers.help_document.' . (int) $recordId) &&  $user->authorise('help_document.access', 'com_questionsanswers'));
+		if (!$access)
+		{
+			return false;
+		}
+
+		if ($recordId)
+		{
+			// The record has been set. Check the record permissions.
+			$permission = $user->authorise('help_document.edit', 'com_questionsanswers.help_document.' . (int) $recordId);
+			if (!$permission)
+			{
+				if ($user->authorise('help_document.edit.own', 'com_questionsanswers.help_document.' . $recordId))
+				{
+					// Now test the owner is the user.
+					$ownerId = (int) isset($data['created_by']) ? $data['created_by'] : 0;
+					if (empty($ownerId))
+					{
+						// Need to do a lookup from the model.
+						$record = $this->getModel()->getItem($recordId);
+
+						if (empty($record))
+						{
+							return false;
+						}
+						$ownerId = $record->created_by;
+					}
+
+					// If the owner matches 'me' then allow.
+					if ($ownerId == $user->id)
+					{
+						if ($user->authorise('help_document.edit.own', 'com_questionsanswers'))
+						{
+							return true;
+						}
+					}
+				}
+				return false;
+			}
+		}
+		// Since there is no permission, revert to the component permissions.
+		return $user->authorise('help_document.edit', $this->option);
+	}
+
+	/**
+	 * Gets the URL arguments to append to an item redirect.
+	 *
+	 * @param   integer  $recordId  The primary key id for the item.
+	 * @param   string   $urlVar    The name of the URL variable for the id.
+	 *
+	 * @return  string  The arguments to append to the redirect URL.
+	 *
+	 * @since   12.2
+	 */
+	protected function getRedirectToItemAppend($recordId = null, $urlVar = 'id')
+	{
+		$tmpl   = $this->input->get('tmpl');
+		$layout = $this->input->get('layout', 'edit', 'string');
+
+		$ref 	= $this->input->get('ref', 0, 'string');
+		$refid 	= $this->input->get('refid', 0, 'int');
+
+		// Setup redirect info.
+
+		$append = '';
+
+		if ($refid)
+                {
+			$append .= '&ref='.(string)$ref.'&refid='.(int)$refid;
+		}
+		elseif ($ref)
+		{
+			$append .= '&ref='.(string)$ref;
+		}
+
+		if ($tmpl)
+		{
+			$append .= '&tmpl=' . $tmpl;
+		}
+
+		if ($layout)
+		{
+			$append .= '&layout=' . $layout;
+		}
+
+		if ($recordId)
+		{
+			$append .= '&' . $urlVar . '=' . $recordId;
+		}
+
+		return $append;
+	}
+
+	/**
+	 * Method to run batch operations.
+	 *
+	 * @param   object  $model  The model.
+	 *
+	 * @return  boolean   True if successful, false otherwise and internal error is set.
+	 *
+	 * @since   2.5
+	 */
+	public function batch($model = null)
+	{
+		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));
+
+		// Set the model
+		$model = $this->getModel('Help_document', '', array());
+
+		// Preset the redirect
+		$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=help_documents' . $this->getRedirectToListAppend(), false));
+
+		return parent::batch($model);
+	}
+
+	/**
+	 * Method to cancel an edit.
+	 *
+	 * @param   string  $key  The name of the primary key of the URL variable.
+	 *
+	 * @return  boolean  True if access level checks pass, false otherwise.
+	 *
+	 * @since   12.2
+	 */
+	public function cancel($key = null)
+	{
+		// get the referal details
+		$this->ref 		= $this->input->get('ref', 0, 'word');
+		$this->refid 	= $this->input->get('refid', 0, 'int');
+
+		$cancel = parent::cancel($key);
+
+		if ($cancel)
+		{
+			if ($this->refid)
+			{
+				$redirect = '&view='.(string)$this->ref.'&layout=edit&id='.(int)$this->refid;
+
+				// Redirect to the item screen.
+				$this->setRedirect(
+					JRoute::_(
+						'index.php?option=' . $this->option . $redirect, false
+					)
+				);
+			}
+			elseif ($this->ref)
+			{
+				$redirect = '&view='.(string)$this->ref;
+
+				// Redirect to the list screen.
+				$this->setRedirect(
+					JRoute::_(
+						'index.php?option=' . $this->option . $redirect, false
+					)
+				);
+			}
+		}
+		else
+		{
+			// Redirect to the items screen.
+			$this->setRedirect(
+				JRoute::_(
+					'index.php?option=' . $this->option . '&view=' . $this->view_list, false
+				)
+			);
+		}
+		return $cancel;
+	}
+
+	/**
+	 * Method to save a record.
+	 *
+	 * @param   string  $key     The name of the primary key of the URL variable.
+	 * @param   string  $urlVar  The name of the URL variable if different from the primary key (sometimes required to avoid router collisions).
+	 *
+	 * @return  boolean  True if successful, false otherwise.
+	 *
+	 * @since   12.2
+	 */
+	public function save($key = null, $urlVar = null)
+	{
+		// get the referal details
+		$this->ref 		= $this->input->get('ref', 0, 'word');
+		$this->refid 	= $this->input->get('refid', 0, 'int');
+
+		if ($this->ref || $this->refid)
+		{
+			// to make sure the item is checkedin on redirect
+			$this->task = 'save';
+		}
+
+		$saved = parent::save($key, $urlVar);
+
+		if ($this->refid && $saved)
+		{
+			$redirect = '&view='.(string)$this->ref.'&layout=edit&id='.(int)$this->refid;
+
+			// Redirect to the item screen.
+			$this->setRedirect(
+				JRoute::_(
+					'index.php?option=' . $this->option . $redirect, false
+				)
+			);
+		}
+		elseif ($this->ref && $saved)
+		{
+			$redirect = '&view='.(string)$this->ref;
+
+			// Redirect to the list screen.
+			$this->setRedirect(
+				JRoute::_(
+					'index.php?option=' . $this->option . $redirect, false
+				)
+			);
+		}
+		return $saved;
+	}
+
+	/**
+	 * Function that allows child controller access to model data
+	 * after the data has been saved.
+	 *
+	 * @param   JModel  &$model     The data model object.
+	 * @param   array   $validData  The validated data.
+	 *
+	 * @return  void
+	 *
+	 * @since   11.1
+	 */
+	protected function postSaveHook(JModelLegacy $model, $validData = array())
+	{
+		return;
+	}
+
+}

admin/controllers/help_documents.php

@@ -0,0 +1,111 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		help_documents.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controlleradmin library
+jimport('joomla.application.component.controlleradmin');
+
+/**
+ * Help_documents Controller
+ */
+class QuestionsanswersControllerHelp_documents extends JControllerAdmin
+{
+	protected $text_prefix = 'COM_QUESTIONSANSWERS_HELP_DOCUMENTS';
+	/**
+	 * Proxy for getModel.
+	 * @since	2.5
+	 */
+	public function getModel($name = 'Help_document', $prefix = 'QuestionsanswersModel', $config = array())
+	{
+		$model = parent::getModel($name, $prefix, array('ignore_request' => true));
+		
+		return $model;
+	}
+
+	public function exportData()
+	{
+		// Check for request forgeries
+		JSession::checkToken() or die(JText::_('JINVALID_TOKEN'));
+		// check if export is allowed for this user.
+		$user = JFactory::getUser();
+		if ($user->authorise('help_document.export', 'com_questionsanswers') && $user->authorise('core.export', 'com_questionsanswers'))
+		{
+			// Get the input
+			$input = JFactory::getApplication()->input;
+			$pks = $input->post->get('cid', array(), 'array');
+			// Sanitize the input
+			JArrayHelper::toInteger($pks);
+			// Get the model
+			$model = $this->getModel('Help_documents');
+			// get the data to export
+			$data = $model->getExportData($pks);
+			if (QuestionsanswersHelper::checkArray($data))
+			{
+				// now set the data to the spreadsheet
+				$date = JFactory::getDate();
+				QuestionsanswersHelper::xls($data,'Help_documents_'.$date->format('jS_F_Y'),'Help documents exported ('.$date->format('jS F, Y').')','help documents');
+			}
+		}
+		// Redirect to the list screen with error.
+		$message = JText::_('COM_QUESTIONSANSWERS_EXPORT_FAILED');
+		$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=help_documents', false), $message, 'error');
+		return;
+	}
+
+
+	public function importData()
+	{
+		// Check for request forgeries
+		JSession::checkToken() or die(JText::_('JINVALID_TOKEN'));
+		// check if import is allowed for this user.
+		$user = JFactory::getUser();
+		if ($user->authorise('help_document.import', 'com_questionsanswers') && $user->authorise('core.import', 'com_questionsanswers'))
+		{
+			// Get the import model
+			$model = $this->getModel('Help_documents');
+			// get the headers to import
+			$headers = $model->getExImPortHeaders();
+			if (QuestionsanswersHelper::checkObject($headers))
+			{
+				// Load headers to session.
+				$session = JFactory::getSession();
+				$headers = json_encode($headers);
+				$session->set('help_document_VDM_IMPORTHEADERS', $headers);
+				$session->set('backto_VDM_IMPORT', 'help_documents');
+				$session->set('dataType_VDM_IMPORTINTO', 'help_document');
+				// Redirect to import view.
+				$message = JText::_('COM_QUESTIONSANSWERS_IMPORT_SELECT_FILE_FOR_HELP_DOCUMENTS');
+				$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=import', false), $message);
+				return;
+			}
+		}
+		// Redirect to the list screen with error.
+		$message = JText::_('COM_QUESTIONSANSWERS_IMPORT_FAILED');
+		$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=help_documents', false), $message, 'error');
+		return;
+	}  
+}

admin/controllers/import.php

@@ -0,0 +1,67 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		import.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+/**
+ * Questionsanswers Import Controller
+ */
+class QuestionsanswersControllerImport extends JControllerLegacy
+{
+	/**
+	 * Import an spreadsheet.
+	 *
+	 * @return  void
+	 */
+	public function import()
+	{
+		// Check for request forgeries
+		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));
+
+		$model = $this->getModel('import');
+		if ($model->import())
+		{
+			$cache = JFactory::getCache('mod_menu');
+			$cache->clean();
+			// TODO: Reset the users acl here as well to kill off any missing bits
+		}
+
+		$app = JFactory::getApplication();
+		$redirect_url = $app->getUserState('com_questionsanswers.redirect_url');
+		if (empty($redirect_url))
+		{
+			$redirect_url = JRoute::_('index.php?option=com_questionsanswers&view=import', false);
+		}
+		else
+		{
+			// wipe out the user state when we're going to redirect
+			$app->setUserState('com_questionsanswers.redirect_url', '');
+			$app->setUserState('com_questionsanswers.message', '');
+			$app->setUserState('com_questionsanswers.extension_message', '');
+		}
+		$this->setRedirect($redirect_url);
+	}
+}

admin/controllers/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/controllers/question_and_answer.php

@@ -0,0 +1,325 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		question_and_answer.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controllerform library
+jimport('joomla.application.component.controllerform');
+
+/**
+ * Question_and_answer Controller
+ */
+class QuestionsanswersControllerQuestion_and_answer extends JControllerForm
+{
+	/**
+	 * Current or most recently performed task.
+	 *
+	 * @var    string
+	 * @since  12.2
+	 * @note   Replaces _task.
+	 */
+	protected $task;
+
+	public function __construct($config = array())
+	{
+		$this->view_list = 'Questions_and_answers'; // safeguard for setting the return view listing to the main view.
+		parent::__construct($config);
+	}
+
+        /**
+	 * Method override to check if you can add a new record.
+	 *
+	 * @param   array  $data  An array of input data.
+	 *
+	 * @return  boolean
+	 *
+	 * @since   1.6
+	 */
+	protected function allowAdd($data = array())
+	{
+		// Access check.
+		$access = JFactory::getUser()->authorise('question_and_answer.access', 'com_questionsanswers');
+		if (!$access)
+		{
+			return false;
+		}
+		// In the absense of better information, revert to the component permissions.
+		return JFactory::getUser()->authorise('question_and_answer.create', $this->option);
+	}
+
+	/**
+	 * Method override to check if you can edit an existing record.
+	 *
+	 * @param   array   $data  An array of input data.
+	 * @param   string  $key   The name of the key for the primary key.
+	 *
+	 * @return  boolean
+	 *
+	 * @since   1.6
+	 */
+	protected function allowEdit($data = array(), $key = 'id')
+	{		// get user object.
+		$user		= JFactory::getUser();
+		// get record id.
+		$recordId	= (int) isset($data[$key]) ? $data[$key] : 0;
+
+
+		// Access check.
+		$access = ($user->authorise('question_and_answer.access', 'com_questionsanswers.question_and_answer.' . (int) $recordId) && $user->authorise('question_and_answer.access', 'com_questionsanswers'));
+		if (!$access)
+		{
+			return false;
+		}
+
+		if ($recordId)
+		{
+			// The record has been set. Check the record permissions.
+			$permission = $user->authorise('question_and_answer.edit', 'com_questionsanswers.question_and_answer.' . (int) $recordId);
+			if (!$permission)
+			{
+				if ($user->authorise('question_and_answer.edit.own', 'com_questionsanswers.question_and_answer.' . $recordId))
+				{
+					// Fallback on edit.own. Now test the owner is the user.
+					$ownerId = (int) isset($data['created_by']) ? $data['created_by'] : 0;
+					if (empty($ownerId))
+					{
+						// Need to do a lookup from the model.
+						$record = $this->getModel()->getItem($recordId);
+
+						if (empty($record))
+						{
+							return false;
+						}
+						$ownerId = $record->created_by;
+					}
+
+					// If the owner matches 'me' then do the test.
+					if ($ownerId == $user->id)
+					{
+						if ($user->authorise('question_and_answer.edit.own', 'com_questionsanswers'))
+						{
+							return true;
+						}
+					}
+				}
+				return false;
+			}
+		}
+		// Since there is no permission, revert to the component permissions.
+		return $user->authorise('question_and_answer.edit', $this->option);
+	}
+
+	/**
+	 * Gets the URL arguments to append to an item redirect.
+	 *
+	 * @param   integer  $recordId  The primary key id for the item.
+	 * @param   string   $urlVar    The name of the URL variable for the id.
+	 *
+	 * @return  string  The arguments to append to the redirect URL.
+	 *
+	 * @since   12.2
+	 */
+	protected function getRedirectToItemAppend($recordId = null, $urlVar = 'id')
+	{
+		$tmpl   = $this->input->get('tmpl');
+		$layout = $this->input->get('layout', 'edit', 'string');
+
+		$ref 	= $this->input->get('ref', 0, 'string');
+		$refid 	= $this->input->get('refid', 0, 'int');
+
+		// Setup redirect info.
+
+		$append = '';
+
+		if ($refid)
+                {
+			$append .= '&ref='.(string)$ref.'&refid='.(int)$refid;
+		}
+		elseif ($ref)
+		{
+			$append .= '&ref='.(string)$ref;
+		}
+
+		if ($tmpl)
+		{
+			$append .= '&tmpl=' . $tmpl;
+		}
+
+		if ($layout)
+		{
+			$append .= '&layout=' . $layout;
+		}
+
+		if ($recordId)
+		{
+			$append .= '&' . $urlVar . '=' . $recordId;
+		}
+
+		return $append;
+	}
+
+	/**
+	 * Method to run batch operations.
+	 *
+	 * @param   object  $model  The model.
+	 *
+	 * @return  boolean   True if successful, false otherwise and internal error is set.
+	 *
+	 * @since   2.5
+	 */
+	public function batch($model = null)
+	{
+		JSession::checkToken() or jexit(JText::_('JINVALID_TOKEN'));
+
+		// Set the model
+		$model = $this->getModel('Question_and_answer', '', array());
+
+		// Preset the redirect
+		$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=questions_and_answers' . $this->getRedirectToListAppend(), false));
+
+		return parent::batch($model);
+	}
+
+	/**
+	 * Method to cancel an edit.
+	 *
+	 * @param   string  $key  The name of the primary key of the URL variable.
+	 *
+	 * @return  boolean  True if access level checks pass, false otherwise.
+	 *
+	 * @since   12.2
+	 */
+	public function cancel($key = null)
+	{
+		// get the referal details
+		$this->ref 		= $this->input->get('ref', 0, 'word');
+		$this->refid 	= $this->input->get('refid', 0, 'int');
+
+		$cancel = parent::cancel($key);
+
+		if ($cancel)
+		{
+			if ($this->refid)
+			{
+				$redirect = '&view='.(string)$this->ref.'&layout=edit&id='.(int)$this->refid;
+
+				// Redirect to the item screen.
+				$this->setRedirect(
+					JRoute::_(
+						'index.php?option=' . $this->option . $redirect, false
+					)
+				);
+			}
+			elseif ($this->ref)
+			{
+				$redirect = '&view='.(string)$this->ref;
+
+				// Redirect to the list screen.
+				$this->setRedirect(
+					JRoute::_(
+						'index.php?option=' . $this->option . $redirect, false
+					)
+				);
+			}
+		}
+		else
+		{
+			// Redirect to the items screen.
+			$this->setRedirect(
+				JRoute::_(
+					'index.php?option=' . $this->option . '&view=' . $this->view_list, false
+				)
+			);
+		}
+		return $cancel;
+	}
+
+	/**
+	 * Method to save a record.
+	 *
+	 * @param   string  $key     The name of the primary key of the URL variable.
+	 * @param   string  $urlVar  The name of the URL variable if different from the primary key (sometimes required to avoid router collisions).
+	 *
+	 * @return  boolean  True if successful, false otherwise.
+	 *
+	 * @since   12.2
+	 */
+	public function save($key = null, $urlVar = null)
+	{
+		// get the referal details
+		$this->ref 		= $this->input->get('ref', 0, 'word');
+		$this->refid 	= $this->input->get('refid', 0, 'int');
+
+		if ($this->ref || $this->refid)
+		{
+			// to make sure the item is checkedin on redirect
+			$this->task = 'save';
+		}
+
+		$saved = parent::save($key, $urlVar);
+
+		if ($this->refid && $saved)
+		{
+			$redirect = '&view='.(string)$this->ref.'&layout=edit&id='.(int)$this->refid;
+
+			// Redirect to the item screen.
+			$this->setRedirect(
+				JRoute::_(
+					'index.php?option=' . $this->option . $redirect, false
+				)
+			);
+		}
+		elseif ($this->ref && $saved)
+		{
+			$redirect = '&view='.(string)$this->ref;
+
+			// Redirect to the list screen.
+			$this->setRedirect(
+				JRoute::_(
+					'index.php?option=' . $this->option . $redirect, false
+				)
+			);
+		}
+		return $saved;
+	}
+
+	/**
+	 * Function that allows child controller access to model data
+	 * after the data has been saved.
+	 *
+	 * @param   JModel  &$model     The data model object.
+	 * @param   array   $validData  The validated data.
+	 *
+	 * @return  void
+	 *
+	 * @since   11.1
+	 */
+	protected function postSaveHook(JModelLegacy $model, $validData = array())
+	{
+		return;
+	}
+
+}

admin/controllers/questions_and_answers.php

@@ -0,0 +1,111 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		questions_and_answers.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controlleradmin library
+jimport('joomla.application.component.controlleradmin');
+
+/**
+ * Questions_and_answers Controller
+ */
+class QuestionsanswersControllerQuestions_and_answers extends JControllerAdmin
+{
+	protected $text_prefix = 'COM_QUESTIONSANSWERS_QUESTIONS_AND_ANSWERS';
+	/**
+	 * Proxy for getModel.
+	 * @since	2.5
+	 */
+	public function getModel($name = 'Question_and_answer', $prefix = 'QuestionsanswersModel', $config = array())
+	{
+		$model = parent::getModel($name, $prefix, array('ignore_request' => true));
+		
+		return $model;
+	}
+
+	public function exportData()
+	{
+		// Check for request forgeries
+		JSession::checkToken() or die(JText::_('JINVALID_TOKEN'));
+		// check if export is allowed for this user.
+		$user = JFactory::getUser();
+		if ($user->authorise('question_and_answer.export', 'com_questionsanswers') && $user->authorise('core.export', 'com_questionsanswers'))
+		{
+			// Get the input
+			$input = JFactory::getApplication()->input;
+			$pks = $input->post->get('cid', array(), 'array');
+			// Sanitize the input
+			JArrayHelper::toInteger($pks);
+			// Get the model
+			$model = $this->getModel('Questions_and_answers');
+			// get the data to export
+			$data = $model->getExportData($pks);
+			if (QuestionsanswersHelper::checkArray($data))
+			{
+				// now set the data to the spreadsheet
+				$date = JFactory::getDate();
+				QuestionsanswersHelper::xls($data,'Questions_and_answers_'.$date->format('jS_F_Y'),'Questions and answers exported ('.$date->format('jS F, Y').')','questions and answers');
+			}
+		}
+		// Redirect to the list screen with error.
+		$message = JText::_('COM_QUESTIONSANSWERS_EXPORT_FAILED');
+		$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=questions_and_answers', false), $message, 'error');
+		return;
+	}
+
+
+	public function importData()
+	{
+		// Check for request forgeries
+		JSession::checkToken() or die(JText::_('JINVALID_TOKEN'));
+		// check if import is allowed for this user.
+		$user = JFactory::getUser();
+		if ($user->authorise('question_and_answer.import', 'com_questionsanswers') && $user->authorise('core.import', 'com_questionsanswers'))
+		{
+			// Get the import model
+			$model = $this->getModel('Questions_and_answers');
+			// get the headers to import
+			$headers = $model->getExImPortHeaders();
+			if (QuestionsanswersHelper::checkObject($headers))
+			{
+				// Load headers to session.
+				$session = JFactory::getSession();
+				$headers = json_encode($headers);
+				$session->set('question_and_answer_VDM_IMPORTHEADERS', $headers);
+				$session->set('backto_VDM_IMPORT', 'questions_and_answers');
+				$session->set('dataType_VDM_IMPORTINTO', 'question_and_answer');
+				// Redirect to import view.
+				$message = JText::_('COM_QUESTIONSANSWERS_IMPORT_SELECT_FILE_FOR_QUESTIONS_AND_ANSWERS');
+				$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=import', false), $message);
+				return;
+			}
+		}
+		// Redirect to the list screen with error.
+		$message = JText::_('COM_QUESTIONSANSWERS_IMPORT_FAILED');
+		$this->setRedirect(JRoute::_('index.php?option=com_questionsanswers&view=questions_and_answers', false), $message, 'error');
+		return;
+	}  
+}

admin/controllers/questionsanswers.php

@@ -0,0 +1,38 @@
+<?php
+/*--------------------------------------------------------------------------------------------------------|  www.vdm.io  |------/
+    __      __       _     _____                 _                                  _     __  __      _   _               _
+    \ \    / /      | |   |  __ \               | |                                | |   |  \/  |    | | | |             | |
+     \ \  / /_ _ ___| |_  | |  | | _____   _____| | ___  _ __  _ __ ___   ___ _ __ | |_  | \  / | ___| |_| |__   ___   __| |
+      \ \/ / _` / __| __| | |  | |/ _ \ \ / / _ \ |/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __| | |\/| |/ _ \ __| '_ \ / _ \ / _` |
+       \  / (_| \__ \ |_  | |__| |  __/\ V /  __/ | (_) | |_) | | | | | |  __/ | | | |_  | |  | |  __/ |_| | | | (_) | (_| |
+        \/ \__,_|___/\__| |_____/ \___| \_/ \___|_|\___/| .__/|_| |_| |_|\___|_| |_|\__| |_|  |_|\___|\__|_| |_|\___/ \__,_|
+                                                        | |                                                                 
+                                                        |_| 				
+/-------------------------------------------------------------------------------------------------------------------------------/
+
+	@version		1.0.x
+	@build			24th April, 2018
+	@created		30th January, 2017
+	@package		Questions and Answers
+	@subpackage		questionsanswers.php
+	@author			Llewellyn van der Merwe <https://www.vdm.io/>	
+	@copyright		Copyright (C) 2015. All Rights Reserved
+	@license		GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html 
+	
+	Questions &amp; Answers 
+                                                             
+/-----------------------------------------------------------------------------------------------------------------------------*/
+
+// No direct access to this file
+defined('_JEXEC') or die('Restricted access');
+
+// import Joomla controlleradmin library
+jimport('joomla.application.component.controlleradmin');
+
+/**
+ * Questionsanswers Controller
+ */
+class QuestionsanswersControllerQuestionsanswers extends JControllerAdmin
+{
+
+}

admin/helpers/PHPExcel/Autoloader.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+PHPExcel_Autoloader::Register();
+//    As we always try to run the autoloader before anything else, we can use it to do a few
+//        simple checks and initialisations
+//PHPExcel_Shared_ZipStreamWrapper::register();
+// check mbstring.func_overload
+if (ini_get('mbstring.func_overload') & 2) {
+    throw new PHPExcel_Exception('Multibyte function overloading in PHP must be disabled for string functions (2).');
+}
+PHPExcel_Shared_String::buildCharacterSets();
+
+
+/**
+ * PHPExcel_Autoloader
+ *
+ * @category    PHPExcel
+ * @package     PHPExcel
+ * @copyright   Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Autoloader
+{
+    /**
+     * Register the Autoloader with SPL
+     *
+     */
+    public static function Register() {
+        if (function_exists('__autoload')) {
+            //    Register any existing autoloader function with SPL, so we don't get any clashes
+            spl_autoload_register('__autoload');
+        }
+        //    Register ourselves with SPL
+        if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
+            return spl_autoload_register(array('PHPExcel_Autoloader', 'Load'), true, true);
+        } else {
+            return spl_autoload_register(array('PHPExcel_Autoloader', 'Load'));
+        }
+    }   //    function Register()
+
+
+    /**
+     * Autoload a class identified by name
+     *
+     * @param    string    $pClassName        Name of the object to load
+     */
+    public static function Load($pClassName){
+        if ((class_exists($pClassName,FALSE)) || (strpos($pClassName, 'PHPExcel') !== 0)) {
+            //    Either already loaded, or not a PHPExcel class request
+            return FALSE;
+        }
+
+        $pClassFilePath = PHPEXCEL_ROOT .
+                          str_replace('_',DIRECTORY_SEPARATOR,$pClassName) .
+                          '.php';
+
+        if ((file_exists($pClassFilePath) === FALSE) || (is_readable($pClassFilePath) === FALSE)) {
+            //    Can't load
+            return FALSE;
+        }
+
+        require($pClassFilePath);
+    }   //    function Load()
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/APC.php

@@ -0,0 +1,295 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_APC
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+    /**
+     * Prefix used to uniquely identify cache data for this worksheet
+     *
+     * @access    private
+     * @var string
+     */
+    private $_cachePrefix = null;
+
+    /**
+     * Cache timeout
+     *
+     * @access    private
+     * @var integer
+     */
+    private $_cacheTime = 600;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+     * @access  private
+     * @return  void
+     * @throws  PHPExcel_Exception
+     */
+    protected function _storeData() {
+        if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+            $this->_currentObject->detach();
+
+            if (!apc_store($this->_cachePrefix.$this->_currentObjectID.'.cache',serialize($this->_currentObject),$this->_cacheTime)) {
+                $this->__destruct();
+                throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in APC');
+            }
+            $this->_currentCellIsDirty = false;
+        }
+        $this->_currentObjectID = $this->_currentObject = null;
+    }    //    function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @access  public
+     * @param   string         $pCoord  Coordinate address of the cell to update
+     * @param   PHPExcel_Cell  $cell    Cell to update
+     * @return  PHPExcel_Cell
+     * @throws  PHPExcel_Exception
+     */
+    public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+        if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+            $this->_storeData();
+        }
+        $this->_cellCache[$pCoord] = true;
+
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = $cell;
+        $this->_currentCellIsDirty = true;
+
+        return $cell;
+    }    //    function addCacheData()
+
+
+    /**
+     * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+     *
+     * @access  public
+     * @param   string  $pCoord  Coordinate address of the cell to check
+     * @throws  PHPExcel_Exception
+     * @return  boolean
+     */
+    public function isDataSet($pCoord) {
+        //    Check if the requested entry is the current object, or exists in the cache
+        if (parent::isDataSet($pCoord)) {
+            if ($this->_currentObjectID == $pCoord) {
+                return true;
+            }
+            //    Check if the requested entry still exists in apc
+            $success = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
+            if ($success === FALSE) {
+                //    Entry no longer exists in APC, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in APC cache');
+            }
+            return true;
+        }
+        return false;
+    }    //    function isDataSet()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @access  public
+     * @param   string         $pCoord  Coordinate of the cell
+     * @throws  PHPExcel_Exception
+     * @return  PHPExcel_Cell  Cell that was found, or null if not found
+     */
+    public function getCacheData($pCoord) {
+        if ($pCoord === $this->_currentObjectID) {
+            return $this->_currentObject;
+        }
+        $this->_storeData();
+
+        //    Check if the entry that has been requested actually exists
+        if (parent::isDataSet($pCoord)) {
+            $obj = apc_fetch($this->_cachePrefix.$pCoord.'.cache');
+            if ($obj === FALSE) {
+                //    Entry no longer exists in APC, so clear it from the cache array
+                parent::deleteCacheData($pCoord);
+                throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in APC cache');
+            }
+        } else {
+            //    Return null if requested entry doesn't exist in cache
+            return null;
+        }
+
+        //    Set current entry to the requested entry
+        $this->_currentObjectID = $pCoord;
+        $this->_currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+        //    Return requested entry
+        return $this->_currentObject;
+    }    //    function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @access  public
+     * @param   string  $pCoord  Coordinate address of the cell to delete
+     * @throws  PHPExcel_Exception
+     */
+    public function deleteCacheData($pCoord) {
+        //    Delete the entry from APC
+        apc_delete($this->_cachePrefix.$pCoord.'.cache');
+
+        //    Delete the entry from our cell address array
+        parent::deleteCacheData($pCoord);
+    }    //    function deleteCacheData()
+
+
+    /**
+     * Clone the cell collection
+     *
+     * @access  public
+     * @param   PHPExcel_Worksheet  $parent  The new worksheet
+     * @throws  PHPExcel_Exception
+     * @return  void
+     */
+    public function copyCellCollection(PHPExcel_Worksheet $parent) {
+        parent::copyCellCollection($parent);
+        //    Get a new id for the new file name
+        $baseUnique = $this->_getUniqueID();
+        $newCachePrefix = substr(md5($baseUnique),0,8).'.';
+        $cacheList = $this->getCellList();
+        foreach($cacheList as $cellID) {
+            if ($cellID != $this->_currentObjectID) {
+                $obj = apc_fetch($this->_cachePrefix.$cellID.'.cache');
+                if ($obj === FALSE) {
+                    //    Entry no longer exists in APC, so clear it from the cache array
+                    parent::deleteCacheData($cellID);
+                    throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in APC');
+                }
+                if (!apc_store($newCachePrefix.$cellID.'.cache',$obj,$this->_cacheTime)) {
+                    $this->__destruct();
+                    throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in APC');
+                }
+            }
+        }
+        $this->_cachePrefix = $newCachePrefix;
+    }    //    function copyCellCollection()
+
+
+    /**
+     * Clear the cell collection and disconnect from our parent
+     *
+     * @return  void
+     */
+    public function unsetWorksheetCells() {
+        if ($this->_currentObject !== NULL) {
+            $this->_currentObject->detach();
+            $this->_currentObject = $this->_currentObjectID = null;
+        }
+
+        //    Flush the APC cache
+        $this->__destruct();
+
+        $this->_cellCache = array();
+
+        //    detach ourself from the worksheet, so that it can then delete this object successfully
+        $this->_parent = null;
+    }    //    function unsetWorksheetCells()
+
+
+    /**
+     * Initialise this new cell collection
+     *
+     * @param  PHPExcel_Worksheet  $parent     The worksheet for this cell collection
+     * @param  array of mixed      $arguments  Additional initialisation arguments
+     */
+    public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+        $cacheTime = (isset($arguments['cacheTime'])) ? $arguments['cacheTime'] : 600;
+
+        if ($this->_cachePrefix === NULL) {
+            $baseUnique = $this->_getUniqueID();
+            $this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+            $this->_cacheTime = $cacheTime;
+
+            parent::__construct($parent);
+        }
+    }    //    function __construct()
+
+
+    /**
+     * Destroy this cell collection
+     */
+    public function __destruct() {
+        $cacheList = $this->getCellList();
+        foreach($cacheList as $cellID) {
+            apc_delete($this->_cachePrefix.$cellID.'.cache');
+        }
+    }    //    function __destruct()
+
+
+    /**
+     * Identify whether the caching method is currently available
+     * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+     *
+     * @return  boolean
+     */
+    public static function cacheMethodIsAvailable() {
+        if (!function_exists('apc_store')) {
+            return FALSE;
+        }
+        if (apc_sma_info() === FALSE) {
+            return FALSE;
+        }
+
+        return TRUE;
+    }
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/CacheBase.php

@@ -0,0 +1,347 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_CacheBase
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+abstract class PHPExcel_CachedObjectStorage_CacheBase {
+
+	/**
+	 * Parent worksheet
+	 *
+	 * @var PHPExcel_Worksheet
+	 */
+	protected $_parent;
+
+	/**
+	 * The currently active Cell
+	 *
+	 * @var PHPExcel_Cell
+	 */
+	protected $_currentObject = null;
+
+	/**
+	 * Coordinate address of the currently active Cell
+	 *
+	 * @var string
+	 */
+	protected $_currentObjectID = null;
+
+
+	/**
+	 * Flag indicating whether the currently active Cell requires saving
+	 *
+	 * @var boolean
+	 */
+	protected $_currentCellIsDirty = true;
+
+	/**
+	 * An array of cells or cell pointers for the worksheet cells held in this cache,
+	 *		and indexed by their coordinate address within the worksheet
+	 *
+	 * @var array of mixed
+	 */
+	protected $_cellCache = array();
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 */
+	public function __construct(PHPExcel_Worksheet $parent) {
+		//	Set our parent worksheet.
+		//	This is maintained within the cache controller to facilitate re-attaching it to PHPExcel_Cell objects when
+		//		they are woken from a serialized state
+		$this->_parent = $parent;
+	}	//	function __construct()
+
+
+	/**
+	 * Return the parent worksheet for this cell collection
+	 *
+	 * @return	PHPExcel_Worksheet
+	 */
+	public function getParent()
+	{
+		return $this->_parent;
+	}
+
+	/**
+	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 * @param	string		$pCoord		Coordinate address of the cell to check
+	 * @return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return true;
+		}
+		//	Check if the requested entry exists in the cache
+		return isset($this->_cellCache[$pCoord]);
+	}	//	function isDataSet()
+
+
+	/**
+	 * Move a cell object from one address to another
+	 *
+	 * @param	string		$fromAddress	Current address of the cell to move
+	 * @param	string		$toAddress		Destination address of the cell to move
+	 * @return	boolean
+	 */
+	public function moveCell($fromAddress, $toAddress) {
+		if ($fromAddress === $this->_currentObjectID) {
+			$this->_currentObjectID = $toAddress;
+		}
+		$this->_currentCellIsDirty = true;
+		if (isset($this->_cellCache[$fromAddress])) {
+			$this->_cellCache[$toAddress] = &$this->_cellCache[$fromAddress];
+			unset($this->_cellCache[$fromAddress]);
+		}
+
+		return TRUE;
+	}	//	function moveCell()
+
+
+    /**
+     * Add or Update a cell in cache
+     *
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function updateCacheData(PHPExcel_Cell $cell) {
+		return $this->addCacheData($cell->getCoordinate(),$cell);
+	}	//	function updateCacheData()
+
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to delete
+     * @throws	PHPExcel_Exception
+     */
+	public function deleteCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			$this->_currentObject->detach();
+			$this->_currentObjectID = $this->_currentObject = null;
+		}
+
+		if (is_object($this->_cellCache[$pCoord])) {
+			$this->_cellCache[$pCoord]->detach();
+			unset($this->_cellCache[$pCoord]);
+		}
+		$this->_currentCellIsDirty = false;
+	}	//	function deleteCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return	string[]
+	 */
+	public function getCellList() {
+		return array_keys($this->_cellCache);
+	}	//	function getCellList()
+
+
+	/**
+	 * Sort the list of all cell addresses currently held in cache by row and column
+	 *
+	 * @return	string[]
+	 */
+	public function getSortedCellList() {
+		$sortKeys = array();
+		foreach ($this->getCellList() as $coord) {
+			sscanf($coord,'%[A-Z]%d', $column, $row);
+			$sortKeys[sprintf('%09d%3s',$row,$column)] = $coord;
+		}
+		ksort($sortKeys);
+
+		return array_values($sortKeys);
+	}	//	function sortCellList()
+
+
+
+	/**
+	 * Get highest worksheet column and highest row that have cell records
+	 *
+	 * @return array Highest column name and highest row number
+	 */
+	public function getHighestRowAndColumn()
+	{
+		// Lookup highest column and highest row
+		$col = array('A' => '1A');
+		$row = array(1);
+		foreach ($this->getCellList() as $coord) {
+			sscanf($coord,'%[A-Z]%d', $c, $r);
+			$row[$r] = $r;
+			$col[$c] = strlen($c).$c;
+		}
+		if (!empty($row)) {
+			// Determine highest column and row
+			$highestRow = max($row);
+			$highestColumn = substr(max($col),1);
+		}
+
+		return array( 'row'	   => $highestRow,
+					  'column' => $highestColumn
+					);
+	}
+
+
+	/**
+	 * Return the cell address of the currently active cell object
+	 *
+	 * @return	string
+	 */
+	public function getCurrentAddress()
+	{
+		return $this->_currentObjectID;
+	}
+
+	/**
+	 * Return the column address of the currently active cell object
+	 *
+	 * @return	string
+	 */
+	public function getCurrentColumn()
+	{
+		sscanf($this->_currentObjectID, '%[A-Z]%d', $column, $row);
+		return $column;
+	}
+
+	/**
+	 * Return the row address of the currently active cell object
+	 *
+	 * @return	integer
+	 */
+	public function getCurrentRow()
+	{
+		sscanf($this->_currentObjectID, '%[A-Z]%d', $column, $row);
+		return (integer) $row;
+	}
+
+	/**
+	 * Get highest worksheet column
+	 *
+     * @param   string     $row        Return the highest column for the specified row,
+     *                                     or the highest column of any row if no row number is passed
+	 * @return  string     Highest column name
+	 */
+	public function getHighestColumn($row = null)
+	{
+        if ($row == null) {
+    		$colRow = $this->getHighestRowAndColumn();
+	    	return $colRow['column'];
+        }
+
+        $columnList = array(1);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord,'%[A-Z]%d', $c, $r);
+            if ($r != $row) {
+                continue;
+            }
+            $columnList[] = PHPExcel_Cell::columnIndexFromString($c);
+        }
+        return PHPExcel_Cell::stringFromColumnIndex(max($columnList) - 1);
+    }
+
+	/**
+	 * Get highest worksheet row
+	 *
+     * @param   string     $column     Return the highest row for the specified column,
+     *                                     or the highest row of any column if no column letter is passed
+	 * @return  int        Highest row number
+	 */
+	public function getHighestRow($column = null)
+	{
+        if ($column == null) {
+	    	$colRow = $this->getHighestRowAndColumn();
+    		return $colRow['row'];
+        }
+
+        $rowList = array(0);
+        foreach ($this->getCellList() as $coord) {
+            sscanf($coord,'%[A-Z]%d', $c, $r);
+            if ($c != $column) {
+                continue;
+            }
+            $rowList[] = $r;
+        }
+
+        return max($rowList);
+	}
+
+
+	/**
+	 * Generate a unique ID for cache referencing
+	 *
+	 * @return string Unique Reference
+	 */
+	protected function _getUniqueID() {
+		if (function_exists('posix_getpid')) {
+			$baseUnique = posix_getpid();
+		} else {
+			$baseUnique = mt_rand();
+		}
+		return uniqid($baseUnique,true);
+	}
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		$this->_currentCellIsDirty;
+        $this->_storeData();
+
+		$this->_parent = $parent;
+		if (($this->_currentObject !== NULL) && (is_object($this->_currentObject))) {
+			$this->_currentObject->attach($this);
+		}
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable() {
+		return true;
+	}
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/DiscISAM.php

@@ -0,0 +1,219 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_DiscISAM
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	/**
+	 * Name of the file for this cache
+	 *
+	 * @var string
+	 */
+	private $_fileName = NULL;
+
+	/**
+	 * File handle for this cache file
+	 *
+	 * @var resource
+	 */
+	private $_fileHandle = NULL;
+
+	/**
+	 * Directory/Folder where the cache file is located
+	 *
+	 * @var string
+	 */
+	private $_cacheDirectory = NULL;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			fseek($this->_fileHandle,0,SEEK_END);
+
+			$this->_cellCache[$this->_currentObjectID] = array(
+                'ptr' => ftell($this->_fileHandle),
+				'sz'  => fwrite($this->_fileHandle, serialize($this->_currentObject))
+			);
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		fseek($this->_fileHandle, $this->_cellCache[$pCoord]['ptr']);
+		$this->_currentObject = unserialize(fread($this->_fileHandle, $this->_cellCache[$pCoord]['sz']));
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newFileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+		//	Copy the existing cell cache file
+		copy ($this->_fileName,$newFileName);
+		$this->_fileName = $newFileName;
+		//	Open the copied cell cache file
+		$this->_fileHandle = fopen($this->_fileName,'a+');
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+
+		//	Close down the temporary cache file
+		$this->__destruct();
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 * @param	array of mixed		$arguments	Additional initialisation arguments
+	 */
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$this->_cacheDirectory	= ((isset($arguments['dir'])) && ($arguments['dir'] !== NULL))
+									? $arguments['dir']
+									: PHPExcel_Shared_File::sys_get_temp_dir();
+
+		parent::__construct($parent);
+		if (is_null($this->_fileHandle)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_fileName = $this->_cacheDirectory.'/PHPExcel.'.$baseUnique.'.cache';
+			$this->_fileHandle = fopen($this->_fileName,'a+');
+		}
+	}	//	function __construct()
+
+
+	/**
+	 * Destroy this cell collection
+	 */
+	public function __destruct() {
+		if (!is_null($this->_fileHandle)) {
+			fclose($this->_fileHandle);
+			unlink($this->_fileName);
+		}
+		$this->_fileHandle = null;
+	}	//	function __destruct()
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/ICache.php

@@ -0,0 +1,112 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_ICache
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+interface PHPExcel_CachedObjectStorage_ICache
+{
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell);
+
+    /**
+     * Add or Update a cell in cache
+     *
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function updateCacheData(PHPExcel_Cell $cell);
+
+    /**
+     * Fetch a cell from cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to retrieve
+     * @return PHPExcel_Cell 	Cell that was found, or null if not found
+     * @throws	PHPExcel_Exception
+     */
+	public function getCacheData($pCoord);
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to delete
+     * @throws	PHPExcel_Exception
+     */
+	public function deleteCacheData($pCoord);
+
+	/**
+	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 * @param	string		$pCoord		Coordinate address of the cell to check
+	 * @return	boolean
+	 */
+	public function isDataSet($pCoord);
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return	string[]
+	 */
+	public function getCellList();
+
+	/**
+	 * Get the list of all cell addresses currently held in cache sorted by column and row
+	 *
+	 * @return	string[]
+	 */
+	public function getSortedCellList();
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent);
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable();
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/Igbinary.php

@@ -0,0 +1,152 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Igbinary
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Igbinary extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			$this->_cellCache[$this->_currentObjectID] = igbinary_serialize($this->_currentObject);
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = igbinary_unserialize($this->_cellCache[$pCoord]);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable() {
+		if (!function_exists('igbinary_serialize')) {
+			return false;
+		}
+
+		return true;
+	}
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/Memcache.php

@@ -0,0 +1,312 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Memcache
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	/**
+	 * Prefix used to uniquely identify cache data for this worksheet
+	 *
+	 * @var string
+	 */
+	private $_cachePrefix = null;
+
+	/**
+	 * Cache timeout
+	 *
+	 * @var integer
+	 */
+	private $_cacheTime = 600;
+
+	/**
+	 * Memcache interface
+	 *
+	 * @var resource
+	 */
+	private $_memcache = null;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			$obj = serialize($this->_currentObject);
+			if (!$this->_memcache->replace($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
+				if (!$this->_memcache->add($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
+					$this->__destruct();
+					throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in MemCache');
+				}
+			}
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+		$this->_cellCache[$pCoord] = true;
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+	/**
+	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 * @param	string		$pCoord		Coordinate address of the cell to check
+	 * @return	boolean
+	 * @return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		//	Check if the requested entry is the current object, or exists in the cache
+		if (parent::isDataSet($pCoord)) {
+			if ($this->_currentObjectID == $pCoord) {
+				return true;
+			}
+			//	Check if the requested entry still exists in Memcache
+			$success = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
+			if ($success === false) {
+				//	Entry no longer exists in Memcache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
+			}
+			return true;
+		}
+		return false;
+	}	//	function isDataSet()
+
+
+	/**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (parent::isDataSet($pCoord)) {
+			$obj = $this->_memcache->get($this->_cachePrefix.$pCoord.'.cache');
+			if ($obj === false) {
+				//	Entry no longer exists in Memcache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in MemCache');
+			}
+		} else {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to delete
+     * @throws	PHPExcel_Exception
+     */
+	public function deleteCacheData($pCoord) {
+		//	Delete the entry from Memcache
+		$this->_memcache->delete($this->_cachePrefix.$pCoord.'.cache');
+
+		//	Delete the entry from our cell address array
+		parent::deleteCacheData($pCoord);
+	}	//	function deleteCacheData()
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			if ($cellID != $this->_currentObjectID) {
+				$obj = $this->_memcache->get($this->_cachePrefix.$cellID.'.cache');
+				if ($obj === false) {
+					//	Entry no longer exists in Memcache, so clear it from the cache array
+					parent::deleteCacheData($cellID);
+					throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in MemCache');
+				}
+				if (!$this->_memcache->add($newCachePrefix.$cellID.'.cache',$obj,NULL,$this->_cacheTime)) {
+					$this->__destruct();
+					throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in MemCache');
+				}
+			}
+		}
+		$this->_cachePrefix = $newCachePrefix;
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+
+		//	Flush the Memcache cache
+		$this->__destruct();
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 * @param	array of mixed		$arguments	Additional initialisation arguments
+	 */
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$memcacheServer	= (isset($arguments['memcacheServer']))	? $arguments['memcacheServer']	: 'localhost';
+		$memcachePort	= (isset($arguments['memcachePort']))	? $arguments['memcachePort']	: 11211;
+		$cacheTime		= (isset($arguments['cacheTime']))		? $arguments['cacheTime']		: 600;
+
+		if (is_null($this->_cachePrefix)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+
+			//	Set a new Memcache object and connect to the Memcache server
+			$this->_memcache = new Memcache();
+			if (!$this->_memcache->addServer($memcacheServer, $memcachePort, false, 50, 5, 5, true, array($this, 'failureCallback'))) {
+				throw new PHPExcel_Exception('Could not connect to MemCache server at '.$memcacheServer.':'.$memcachePort);
+			}
+			$this->_cacheTime = $cacheTime;
+
+			parent::__construct($parent);
+		}
+	}	//	function __construct()
+
+
+	/**
+	 * Memcache error handler
+	 *
+	 * @param	string	$host		Memcache server
+	 * @param	integer	$port		Memcache port
+     * @throws	PHPExcel_Exception
+	 */
+	public function failureCallback($host, $port) {
+		throw new PHPExcel_Exception('memcache '.$host.':'.$port.' failed');
+	}
+
+
+	/**
+	 * Destroy this cell collection
+	 */
+	public function __destruct() {
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			$this->_memcache->delete($this->_cachePrefix.$cellID.'.cache');
+		}
+	}	//	function __destruct()
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable() {
+		if (!function_exists('memcache_add')) {
+			return false;
+		}
+
+		return true;
+	}
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/Memory.php

@@ -0,0 +1,125 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Memory
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Memory extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+    /**
+     * Dummy method callable from CacheBase, but unused by Memory cache
+     *
+	 * @return	void
+     */
+	protected function _storeData() {
+	}	//	function _storeData()
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		$this->_cellCache[$pCoord] = $cell;
+
+		//	Set current entry to the new/updated entry
+		$this->_currentObjectID = $pCoord;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			$this->_currentObjectID = NULL;
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+
+		//	Return requested entry
+		return $this->_cellCache[$pCoord];
+	}	//	function getCacheData()
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+
+		$newCollection = array();
+		foreach($this->_cellCache as $k => &$cell) {
+			$newCollection[$k] = clone $cell;
+			$newCollection[$k]->attach($this);
+		}
+
+		$this->_cellCache = $newCollection;
+	}
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		//	Because cells are all stored as intact objects in memory, we need to detach each one from the parent
+		foreach($this->_cellCache as $k => &$cell) {
+			$cell->detach();
+			$this->_cellCache[$k] = null;
+		}
+		unset($cell);
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/MemoryGZip.php

@@ -0,0 +1,137 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_MemoryGZip
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			$this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize(gzinflate($this->_cellCache[$pCoord]));
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/MemorySerialized.php

@@ -0,0 +1,137 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_MemorySerialized
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($this->_cellCache[$pCoord]);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/PHPTemp.php

@@ -0,0 +1,206 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_PHPTemp
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	/**
+	 * Name of the file for this cache
+	 *
+	 * @var string
+	 */
+	private $_fileHandle = null;
+
+	/**
+	 * Memory limit to use before reverting to file cache
+	 *
+	 * @var integer
+	 */
+	private $_memoryCacheSize = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			fseek($this->_fileHandle,0,SEEK_END);
+
+			$this->_cellCache[$this->_currentObjectID] = array(
+                'ptr' => ftell($this->_fileHandle),
+				'sz'  => fwrite($this->_fileHandle, serialize($this->_currentObject))
+			);
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		if (!isset($this->_cellCache[$pCoord])) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		fseek($this->_fileHandle,$this->_cellCache[$pCoord]['ptr']);
+		$this->_currentObject = unserialize(fread($this->_fileHandle,$this->_cellCache[$pCoord]['sz']));
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Open a new stream for the cell cache data
+		$newFileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
+		//	Copy the existing cell cache data to the new stream
+		fseek($this->_fileHandle,0);
+		while (!feof($this->_fileHandle)) {
+			fwrite($newFileHandle,fread($this->_fileHandle, 1024));
+		}
+		$this->_fileHandle = $newFileHandle;
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+
+		//	Close down the php://temp file
+		$this->__destruct();
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 * @param	array of mixed		$arguments	Additional initialisation arguments
+	 */
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$this->_memoryCacheSize	= (isset($arguments['memoryCacheSize']))	? $arguments['memoryCacheSize']	: '1MB';
+
+		parent::__construct($parent);
+		if (is_null($this->_fileHandle)) {
+			$this->_fileHandle = fopen('php://temp/maxmemory:'.$this->_memoryCacheSize,'a+');
+		}
+	}	//	function __construct()
+
+
+	/**
+	 * Destroy this cell collection
+	 */
+	public function __destruct() {
+		if (!is_null($this->_fileHandle)) {
+			fclose($this->_fileHandle);
+		}
+		$this->_fileHandle = null;
+	}	//	function __destruct()
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/SQLite.php

@@ -0,0 +1,306 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_SQLite
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_SQLite extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	/**
+	 * Database table name
+	 *
+	 * @var string
+	 */
+	private $_TableName = null;
+
+	/**
+	 * Database handle
+	 *
+	 * @var resource
+	 */
+	private $_DBHandle = null;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			if (!$this->_DBHandle->queryExec("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES('".$this->_currentObjectID."','".sqlite_escape_string(serialize($this->_currentObject))."')"))
+				throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		$query = "SELECT value FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
+		$cellResultSet = $this->_DBHandle->query($query,SQLITE_ASSOC);
+		if ($cellResultSet === false) {
+			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+		} elseif ($cellResultSet->numRows() == 0) {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+
+		$cellResult = $cellResultSet->fetchSingle();
+		$this->_currentObject = unserialize($cellResult);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Is a value set for an indexed cell?
+	 *
+	 * @param	string		$pCoord		Coordinate address of the cell to check
+	 * @return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return true;
+		}
+
+		//	Check if the requested entry exists in the cache
+		$query = "SELECT id FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
+		$cellResultSet = $this->_DBHandle->query($query,SQLITE_ASSOC);
+		if ($cellResultSet === false) {
+			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+		} elseif ($cellResultSet->numRows() == 0) {
+			//	Return null if requested entry doesn't exist in cache
+			return false;
+		}
+		return true;
+	}	//	function isDataSet()
+
+
+    /**
+     * Delete a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to delete
+     * @throws	PHPExcel_Exception
+     */
+	public function deleteCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			$this->_currentObject->detach();
+			$this->_currentObjectID = $this->_currentObject = null;
+		}
+
+		//	Check if the requested entry exists in the cache
+		$query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$pCoord."'";
+		if (!$this->_DBHandle->queryExec($query))
+			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+
+		$this->_currentCellIsDirty = false;
+	}	//	function deleteCacheData()
+
+
+	/**
+	 * Move a cell object from one address to another
+	 *
+	 * @param	string		$fromAddress	Current address of the cell to move
+	 * @param	string		$toAddress		Destination address of the cell to move
+	 * @return	boolean
+	 */
+	public function moveCell($fromAddress, $toAddress) {
+		if ($fromAddress === $this->_currentObjectID) {
+			$this->_currentObjectID = $toAddress;
+		}
+
+		$query = "DELETE FROM kvp_".$this->_TableName." WHERE id='".$toAddress."'";
+		$result = $this->_DBHandle->exec($query);
+		if ($result === false)
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		$query = "UPDATE kvp_".$this->_TableName." SET id='".$toAddress."' WHERE id='".$fromAddress."'";
+		$result = $this->_DBHandle->exec($query);
+		if ($result === false)
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		return TRUE;
+	}	//	function moveCell()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return	string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		$query = "SELECT id FROM kvp_".$this->_TableName;
+		$cellIdsResult = $this->_DBHandle->unbufferedQuery($query,SQLITE_ASSOC);
+		if ($cellIdsResult === false)
+			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+
+		$cellKeys = array();
+		foreach($cellIdsResult as $row) {
+			$cellKeys[] = $row['id'];
+		}
+
+		return $cellKeys;
+	}	//	function getCellList()
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		$this->_currentCellIsDirty;
+        $this->_storeData();
+
+		//	Get a new id for the new table name
+		$tableName = str_replace('.','_',$this->_getUniqueID());
+		if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
+													AS SELECT * FROM kvp_'.$this->_TableName))
+			throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+
+		//	Copy the existing cell cache file
+		$this->_TableName = $tableName;
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+
+		//	Close down the temporary cache file
+		$this->__destruct();
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 */
+	public function __construct(PHPExcel_Worksheet $parent) {
+		parent::__construct($parent);
+		if (is_null($this->_DBHandle)) {
+			$this->_TableName = str_replace('.','_',$this->_getUniqueID());
+			$_DBName = ':memory:';
+
+			$this->_DBHandle = new SQLiteDatabase($_DBName);
+			if ($this->_DBHandle === false)
+				throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+			if (!$this->_DBHandle->queryExec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)'))
+				throw new PHPExcel_Exception(sqlite_error_string($this->_DBHandle->lastError()));
+		}
+	}	//	function __construct()
+
+
+	/**
+	 * Destroy this cell collection
+	 */
+	public function __destruct() {
+		if (!is_null($this->_DBHandle)) {
+			$this->_DBHandle->queryExec('DROP TABLE kvp_'.$this->_TableName);
+		}
+		$this->_DBHandle = null;
+	}	//	function __destruct()
+
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable() {
+		if (!function_exists('sqlite_open')) {
+			return false;
+		}
+
+		return true;
+	}
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/SQLite3.php

@@ -0,0 +1,345 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_SQLite3
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_SQLite3 extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	/**
+	 * Database table name
+	 *
+	 * @var string
+	 */
+	private $_TableName = null;
+
+	/**
+	 * Database handle
+	 *
+	 * @var resource
+	 */
+	private $_DBHandle = null;
+
+	/**
+	 * Prepared statement for a SQLite3 select query
+	 *
+	 * @var SQLite3Stmt
+	 */
+	private $_selectQuery;
+
+	/**
+	 * Prepared statement for a SQLite3 insert query
+	 *
+	 * @var SQLite3Stmt
+	 */
+	private $_insertQuery;
+
+	/**
+	 * Prepared statement for a SQLite3 update query
+	 *
+	 * @var SQLite3Stmt
+	 */
+	private $_updateQuery;
+
+	/**
+	 * Prepared statement for a SQLite3 delete query
+	 *
+	 * @var SQLite3Stmt
+	 */
+	private $_deleteQuery;
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			$this->_insertQuery->bindValue('id',$this->_currentObjectID,SQLITE3_TEXT);
+			$this->_insertQuery->bindValue('data',serialize($this->_currentObject),SQLITE3_BLOB);
+			$result = $this->_insertQuery->execute();
+			if ($result === false)
+				throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+			$this->_currentCellIsDirty = false;
+		}
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+    /**
+     * Add or Update a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to update
+     * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+     * @throws	PHPExcel_Exception
+     */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+    /**
+     * Get cell at a specific coordinate
+     *
+     * @param 	string 			$pCoord		Coordinate of the cell
+     * @throws 	PHPExcel_Exception
+     * @return 	PHPExcel_Cell 	Cell that was found, or null if not found
+     */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		$this->_selectQuery->bindValue('id',$pCoord,SQLITE3_TEXT);
+		$cellResult = $this->_selectQuery->execute();
+		if ($cellResult === FALSE) {
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+		}
+		$cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
+		if ($cellData === FALSE) {
+			//	Return null if requested entry doesn't exist in cache
+			return NULL;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+
+		$this->_currentObject = unserialize($cellData['value']);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 *	Is a value set for an indexed cell?
+	 *
+	 * @param	string		$pCoord		Coordinate address of the cell to check
+	 * @return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return TRUE;
+		}
+
+		//	Check if the requested entry exists in the cache
+		$this->_selectQuery->bindValue('id',$pCoord,SQLITE3_TEXT);
+		$cellResult = $this->_selectQuery->execute();
+		if ($cellResult === FALSE) {
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+		}
+		$cellData = $cellResult->fetchArray(SQLITE3_ASSOC);
+
+		return ($cellData === FALSE) ? FALSE : TRUE;
+	}	//	function isDataSet()
+
+
+    /**
+     *	Delete a cell in cache identified by coordinate address
+     *
+     * @param	string			$pCoord		Coordinate address of the cell to delete
+     * @throws	PHPExcel_Exception
+     */
+	public function deleteCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			$this->_currentObject->detach();
+			$this->_currentObjectID = $this->_currentObject = NULL;
+		}
+
+		//	Check if the requested entry exists in the cache
+		$this->_deleteQuery->bindValue('id',$pCoord,SQLITE3_TEXT);
+		$result = $this->_deleteQuery->execute();
+		if ($result === FALSE)
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		$this->_currentCellIsDirty = FALSE;
+	}	//	function deleteCacheData()
+
+
+	/**
+	 * Move a cell object from one address to another
+	 *
+	 * @param	string		$fromAddress	Current address of the cell to move
+	 * @param	string		$toAddress		Destination address of the cell to move
+	 * @return	boolean
+	 */
+	public function moveCell($fromAddress, $toAddress) {
+		if ($fromAddress === $this->_currentObjectID) {
+			$this->_currentObjectID = $toAddress;
+		}
+
+		$this->_deleteQuery->bindValue('id',$toAddress,SQLITE3_TEXT);
+		$result = $this->_deleteQuery->execute();
+		if ($result === false)
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		$this->_updateQuery->bindValue('toid',$toAddress,SQLITE3_TEXT);
+		$this->_updateQuery->bindValue('fromid',$fromAddress,SQLITE3_TEXT);
+		$result = $this->_updateQuery->execute();
+		if ($result === false)
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		return TRUE;
+	}	//	function moveCell()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return	string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		$query = "SELECT id FROM kvp_".$this->_TableName;
+		$cellIdsResult = $this->_DBHandle->query($query);
+		if ($cellIdsResult === false)
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		$cellKeys = array();
+		while ($row = $cellIdsResult->fetchArray(SQLITE3_ASSOC)) {
+			$cellKeys[] = $row['id'];
+		}
+
+		return $cellKeys;
+	}	//	function getCellList()
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		$this->_currentCellIsDirty;
+        $this->_storeData();
+
+		//	Get a new id for the new table name
+		$tableName = str_replace('.','_',$this->_getUniqueID());
+		if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$tableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)
+		                                       AS SELECT * FROM kvp_'.$this->_TableName))
+			throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+
+		//	Copy the existing cell cache file
+		$this->_TableName = $tableName;
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+
+		//	Close down the temporary cache file
+		$this->__destruct();
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 */
+	public function __construct(PHPExcel_Worksheet $parent) {
+		parent::__construct($parent);
+		if (is_null($this->_DBHandle)) {
+			$this->_TableName = str_replace('.','_',$this->_getUniqueID());
+			$_DBName = ':memory:';
+
+			$this->_DBHandle = new SQLite3($_DBName);
+			if ($this->_DBHandle === false)
+				throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+			if (!$this->_DBHandle->exec('CREATE TABLE kvp_'.$this->_TableName.' (id VARCHAR(12) PRIMARY KEY, value BLOB)'))
+				throw new PHPExcel_Exception($this->_DBHandle->lastErrorMsg());
+		}
+
+		$this->_selectQuery = $this->_DBHandle->prepare("SELECT value FROM kvp_".$this->_TableName." WHERE id = :id");
+		$this->_insertQuery = $this->_DBHandle->prepare("INSERT OR REPLACE INTO kvp_".$this->_TableName." VALUES(:id,:data)");
+		$this->_updateQuery = $this->_DBHandle->prepare("UPDATE kvp_".$this->_TableName." SET id=:toId WHERE id=:fromId");
+		$this->_deleteQuery = $this->_DBHandle->prepare("DELETE FROM kvp_".$this->_TableName." WHERE id = :id");
+	}	//	function __construct()
+
+
+	/**
+	 * Destroy this cell collection
+	 */
+	public function __destruct() {
+		if (!is_null($this->_DBHandle)) {
+			$this->_DBHandle->exec('DROP TABLE kvp_'.$this->_TableName);
+			$this->_DBHandle->close();
+		}
+		$this->_DBHandle = null;
+	}	//	function __destruct()
+
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable() {
+		if (!class_exists('SQLite3',FALSE)) {
+			return false;
+		}
+
+		return true;
+	}
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/Wincache.php

@@ -0,0 +1,294 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorage_Wincache
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
+
+	/**
+	 * Prefix used to uniquely identify cache data for this worksheet
+	 *
+	 * @var string
+	 */
+	private $_cachePrefix = null;
+
+	/**
+	 * Cache timeout
+	 *
+	 * @var integer
+	 */
+	private $_cacheTime = 600;
+
+
+    /**
+     * Store cell data in cache for the current cell object if it's "dirty",
+     *     and the 'nullify' the current cell object
+     *
+	 * @return	void
+     * @throws	PHPExcel_Exception
+     */
+	protected function _storeData() {
+		if ($this->_currentCellIsDirty && !empty($this->_currentObjectID)) {
+			$this->_currentObject->detach();
+
+			$obj = serialize($this->_currentObject);
+			if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
+				if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
+					$this->__destruct();
+					throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
+				}
+			} else {
+				if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
+					$this->__destruct();
+					throw new PHPExcel_Exception('Failed to store cell '.$this->_currentObjectID.' in WinCache');
+				}
+			}
+			$this->_currentCellIsDirty = false;
+		}
+
+		$this->_currentObjectID = $this->_currentObject = null;
+	}	//	function _storeData()
+
+
+	/**
+	 * Add or Update a cell in cache identified by coordinate address
+	 *
+	 * @param	string			$pCoord		Coordinate address of the cell to update
+	 * @param	PHPExcel_Cell	$cell		Cell to update
+	 * @return	PHPExcel_Cell
+	 * @throws	PHPExcel_Exception
+	 */
+	public function addCacheData($pCoord, PHPExcel_Cell $cell) {
+		if (($pCoord !== $this->_currentObjectID) && ($this->_currentObjectID !== null)) {
+			$this->_storeData();
+		}
+		$this->_cellCache[$pCoord] = true;
+
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = $cell;
+		$this->_currentCellIsDirty = true;
+
+		return $cell;
+	}	//	function addCacheData()
+
+
+	/**
+	 * Is a value set in the current PHPExcel_CachedObjectStorage_ICache for an indexed cell?
+	 *
+	 * @param	string		$pCoord		Coordinate address of the cell to check
+	 * @return	boolean
+	 */
+	public function isDataSet($pCoord) {
+		//	Check if the requested entry is the current object, or exists in the cache
+		if (parent::isDataSet($pCoord)) {
+			if ($this->_currentObjectID == $pCoord) {
+				return true;
+			}
+			//	Check if the requested entry still exists in cache
+			$success = wincache_ucache_exists($this->_cachePrefix.$pCoord.'.cache');
+			if ($success === false) {
+				//	Entry no longer exists in Wincache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
+			}
+			return true;
+		}
+		return false;
+	}	//	function isDataSet()
+
+
+	/**
+	 * Get cell at a specific coordinate
+	 *
+	 * @param	string			$pCoord		Coordinate of the cell
+	 * @throws	PHPExcel_Exception
+	 * @return	PHPExcel_Cell	Cell that was found, or null if not found
+	 */
+	public function getCacheData($pCoord) {
+		if ($pCoord === $this->_currentObjectID) {
+			return $this->_currentObject;
+		}
+		$this->_storeData();
+
+		//	Check if the entry that has been requested actually exists
+		$obj = null;
+		if (parent::isDataSet($pCoord)) {
+			$success = false;
+			$obj = wincache_ucache_get($this->_cachePrefix.$pCoord.'.cache', $success);
+			if ($success === false) {
+				//	Entry no longer exists in WinCache, so clear it from the cache array
+				parent::deleteCacheData($pCoord);
+				throw new PHPExcel_Exception('Cell entry '.$pCoord.' no longer exists in WinCache');
+			}
+		} else {
+			//	Return null if requested entry doesn't exist in cache
+			return null;
+		}
+
+		//	Set current entry to the requested entry
+		$this->_currentObjectID = $pCoord;
+		$this->_currentObject = unserialize($obj);
+        //    Re-attach this as the cell's parent
+        $this->_currentObject->attach($this);
+
+		//	Return requested entry
+		return $this->_currentObject;
+	}	//	function getCacheData()
+
+
+	/**
+	 * Get a list of all cell addresses currently held in cache
+	 *
+	 * @return  string[]
+	 */
+	public function getCellList() {
+		if ($this->_currentObjectID !== null) {
+			$this->_storeData();
+		}
+
+		return parent::getCellList();
+	}
+
+
+	/**
+	 * Delete a cell in cache identified by coordinate address
+	 *
+	 * @param	string			$pCoord		Coordinate address of the cell to delete
+	 * @throws	PHPExcel_Exception
+	 */
+	public function deleteCacheData($pCoord) {
+		//	Delete the entry from Wincache
+		wincache_ucache_delete($this->_cachePrefix.$pCoord.'.cache');
+
+		//	Delete the entry from our cell address array
+		parent::deleteCacheData($pCoord);
+	}	//	function deleteCacheData()
+
+
+	/**
+	 * Clone the cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The new worksheet
+	 * @return	void
+	 */
+	public function copyCellCollection(PHPExcel_Worksheet $parent) {
+		parent::copyCellCollection($parent);
+		//	Get a new id for the new file name
+		$baseUnique = $this->_getUniqueID();
+		$newCachePrefix = substr(md5($baseUnique),0,8).'.';
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			if ($cellID != $this->_currentObjectID) {
+				$success = false;
+				$obj = wincache_ucache_get($this->_cachePrefix.$cellID.'.cache', $success);
+				if ($success === false) {
+					//	Entry no longer exists in WinCache, so clear it from the cache array
+					parent::deleteCacheData($cellID);
+					throw new PHPExcel_Exception('Cell entry '.$cellID.' no longer exists in Wincache');
+				}
+				if (!wincache_ucache_add($newCachePrefix.$cellID.'.cache', $obj, $this->_cacheTime)) {
+					$this->__destruct();
+					throw new PHPExcel_Exception('Failed to store cell '.$cellID.' in Wincache');
+				}
+			}
+		}
+		$this->_cachePrefix = $newCachePrefix;
+	}	//	function copyCellCollection()
+
+
+	/**
+	 * Clear the cell collection and disconnect from our parent
+	 *
+	 * @return	void
+	 */
+	public function unsetWorksheetCells() {
+		if(!is_null($this->_currentObject)) {
+			$this->_currentObject->detach();
+			$this->_currentObject = $this->_currentObjectID = null;
+		}
+
+		//	Flush the WinCache cache
+		$this->__destruct();
+
+		$this->_cellCache = array();
+
+		//	detach ourself from the worksheet, so that it can then delete this object successfully
+		$this->_parent = null;
+	}	//	function unsetWorksheetCells()
+
+
+	/**
+	 * Initialise this new cell collection
+	 *
+	 * @param	PHPExcel_Worksheet	$parent		The worksheet for this cell collection
+	 * @param	array of mixed		$arguments	Additional initialisation arguments
+	 */
+	public function __construct(PHPExcel_Worksheet $parent, $arguments) {
+		$cacheTime	= (isset($arguments['cacheTime']))	? $arguments['cacheTime']	: 600;
+
+		if (is_null($this->_cachePrefix)) {
+			$baseUnique = $this->_getUniqueID();
+			$this->_cachePrefix = substr(md5($baseUnique),0,8).'.';
+			$this->_cacheTime = $cacheTime;
+
+			parent::__construct($parent);
+		}
+	}	//	function __construct()
+
+
+	/**
+	 * Destroy this cell collection
+	 */
+	public function __destruct() {
+		$cacheList = $this->getCellList();
+		foreach($cacheList as $cellID) {
+			wincache_ucache_delete($this->_cachePrefix.$cellID.'.cache');
+		}
+	}	//	function __destruct()
+
+
+	/**
+	 * Identify whether the caching method is currently available
+	 * Some methods are dependent on the availability of certain extensions being enabled in the PHP build
+	 *
+	 * @return	boolean
+	 */
+	public static function cacheMethodIsAvailable() {
+		if (!function_exists('wincache_ucache_add')) {
+			return false;
+		}
+
+		return true;
+	}
+
+}

admin/helpers/PHPExcel/CachedObjectStorage/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/CachedObjectStorageFactory.php

@@ -0,0 +1,251 @@
+<?php
+
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_CachedObjectStorage
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CachedObjectStorageFactory
+ *
+ * @category    PHPExcel
+ * @package        PHPExcel_CachedObjectStorage
+ * @copyright    Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CachedObjectStorageFactory
+{
+    const cache_in_memory               = 'Memory';
+    const cache_in_memory_gzip          = 'MemoryGZip';
+    const cache_in_memory_serialized    = 'MemorySerialized';
+    const cache_igbinary                = 'Igbinary';
+    const cache_to_discISAM             = 'DiscISAM';
+    const cache_to_apc                  = 'APC';
+    const cache_to_memcache             = 'Memcache';
+    const cache_to_phpTemp              = 'PHPTemp';
+    const cache_to_wincache             = 'Wincache';
+    const cache_to_sqlite               = 'SQLite';
+    const cache_to_sqlite3              = 'SQLite3';
+
+
+    /**
+     * Name of the method used for cell cacheing
+     *
+     * @var string
+     */
+    private static $_cacheStorageMethod = NULL;
+
+    /**
+     * Name of the class used for cell cacheing
+     *
+     * @var string
+     */
+    private static $_cacheStorageClass = NULL;
+
+
+    /**
+     * List of all possible cache storage methods
+     *
+     * @var string[]
+     */
+    private static $_storageMethods = array(
+        self::cache_in_memory,
+        self::cache_in_memory_gzip,
+        self::cache_in_memory_serialized,
+        self::cache_igbinary,
+        self::cache_to_phpTemp,
+        self::cache_to_discISAM,
+        self::cache_to_apc,
+        self::cache_to_memcache,
+        self::cache_to_wincache,
+        self::cache_to_sqlite,
+        self::cache_to_sqlite3,
+    );
+
+
+    /**
+     * Default arguments for each cache storage method
+     *
+     * @var array of mixed array
+     */
+    private static $_storageMethodDefaultParameters = array(
+        self::cache_in_memory               => array(
+                                                    ),
+        self::cache_in_memory_gzip          => array(
+                                                    ),
+        self::cache_in_memory_serialized    => array(
+                                                    ),
+        self::cache_igbinary                => array(
+                                                    ),
+        self::cache_to_phpTemp              => array( 'memoryCacheSize' => '1MB'
+                                                    ),
+        self::cache_to_discISAM             => array( 'dir'             => NULL
+                                                    ),
+        self::cache_to_apc                  => array( 'cacheTime'       => 600
+                                                    ),
+        self::cache_to_memcache             => array( 'memcacheServer'  => 'localhost',
+                                                      'memcachePort'    => 11211,
+                                                      'cacheTime'       => 600
+                                                    ),
+        self::cache_to_wincache             => array( 'cacheTime'       => 600
+                                                    ),
+        self::cache_to_sqlite               => array(
+                                                    ),
+        self::cache_to_sqlite3              => array(
+                                                    ),
+    );
+
+
+    /**
+     * Arguments for the active cache storage method
+     *
+     * @var array of mixed array
+     */
+    private static $_storageMethodParameters = array();
+
+
+    /**
+     * Return the current cache storage method
+     *
+     * @return string|NULL
+     **/
+    public static function getCacheStorageMethod()
+    {
+        return self::$_cacheStorageMethod;
+    }   //    function getCacheStorageMethod()
+
+
+    /**
+     * Return the current cache storage class
+     *
+     * @return PHPExcel_CachedObjectStorage_ICache|NULL
+     **/
+    public static function getCacheStorageClass()
+    {
+        return self::$_cacheStorageClass;
+    }   //    function getCacheStorageClass()
+
+
+    /**
+     * Return the list of all possible cache storage methods
+     *
+     * @return string[]
+     **/
+    public static function getAllCacheStorageMethods()
+    {
+        return self::$_storageMethods;
+    }   //    function getCacheStorageMethods()
+
+
+    /**
+     * Return the list of all available cache storage methods
+     *
+     * @return string[]
+     **/
+    public static function getCacheStorageMethods()
+    {
+        $activeMethods = array();
+        foreach(self::$_storageMethods as $storageMethod) {
+            $cacheStorageClass = 'PHPExcel_CachedObjectStorage_' . $storageMethod;
+            if (call_user_func(array($cacheStorageClass, 'cacheMethodIsAvailable'))) {
+                $activeMethods[] = $storageMethod;
+            }
+        }
+        return $activeMethods;
+    }   //    function getCacheStorageMethods()
+
+
+    /**
+     * Identify the cache storage method to use
+     *
+     * @param    string            $method        Name of the method to use for cell cacheing
+     * @param    array of mixed    $arguments    Additional arguments to pass to the cell caching class
+     *                                        when instantiating
+     * @return boolean
+     **/
+    public static function initialize($method = self::cache_in_memory, $arguments = array())
+    {
+        if (!in_array($method,self::$_storageMethods)) {
+            return FALSE;
+        }
+
+        $cacheStorageClass = 'PHPExcel_CachedObjectStorage_'.$method;
+        if (!call_user_func(array( $cacheStorageClass,
+                                   'cacheMethodIsAvailable'))) {
+            return FALSE;
+        }
+
+        self::$_storageMethodParameters[$method] = self::$_storageMethodDefaultParameters[$method];
+        foreach($arguments as $k => $v) {
+            if (array_key_exists($k, self::$_storageMethodParameters[$method])) {
+                self::$_storageMethodParameters[$method][$k] = $v;
+            }
+        }
+
+        if (self::$_cacheStorageMethod === NULL) {
+            self::$_cacheStorageClass = 'PHPExcel_CachedObjectStorage_' . $method;
+            self::$_cacheStorageMethod = $method;
+        }
+        return TRUE;
+    }   //    function initialize()
+
+
+    /**
+     * Initialise the cache storage
+     *
+     * @param    PHPExcel_Worksheet     $parent        Enable cell caching for this worksheet
+     * @return    PHPExcel_CachedObjectStorage_ICache
+     **/
+    public static function getInstance(PHPExcel_Worksheet $parent)
+    {
+        $cacheMethodIsAvailable = TRUE;
+        if (self::$_cacheStorageMethod === NULL) {
+            $cacheMethodIsAvailable = self::initialize();
+        }
+
+        if ($cacheMethodIsAvailable) {
+            $instance = new self::$_cacheStorageClass( $parent,
+                                                       self::$_storageMethodParameters[self::$_cacheStorageMethod]
+                                                     );
+            if ($instance !== NULL) {
+                return $instance;
+            }
+        }
+
+        return FALSE;
+    }   //    function getInstance()
+
+
+    /**
+     * Clear the cache storage
+     *
+     **/
+	public static function finalize()
+	{
+		self::$_cacheStorageMethod = NULL;
+		self::$_cacheStorageClass = NULL;
+		self::$_storageMethodParameters = array();
+	}
+
+}

admin/helpers/PHPExcel/CalcEngine/CyclicReferenceStack.php

@@ -0,0 +1,98 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_CalcEngine_CyclicReferenceStack
+ *
+ * @category	PHPExcel_CalcEngine_CyclicReferenceStack
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CalcEngine_CyclicReferenceStack {
+
+	/**
+	 *  The call stack for calculated cells
+	 *
+	 *  @var mixed[]
+	 */
+	private $_stack = array();
+
+
+	/**
+	 * Return the number of entries on the stack
+	 *
+	 * @return  integer
+	 */
+	public function count() {
+		return count($this->_stack);
+	}
+
+	/**
+	 * Push a new entry onto the stack
+	 *
+	 * @param  mixed  $value
+	 */
+	public function push($value) {
+		$this->_stack[] = $value;
+	}	//	function push()
+
+	/**
+	 * Pop the last entry from the stack
+	 *
+	 * @return  mixed
+	 */
+	public function pop() {
+		return array_pop($this->_stack);
+	}	//	function pop()
+
+	/**
+	 * Test to see if a specified entry exists on the stack
+	 *
+	 * @param  mixed  $value  The value to test
+	 */
+	public function onStack($value) {
+		return in_array($value, $this->_stack);
+	}
+
+	/**
+	 * Clear the stack
+	 */
+	public function clear() {
+		$this->_stack = array();
+	}	//	function push()
+
+	/**
+	 * Return an array of all entries on the stack
+	 *
+	 * @return  mixed[]
+	 */
+	public function showStack() {
+		return $this->_stack;
+	}
+
+}	//	class PHPExcel_CalcEngine_CyclicReferenceStack

admin/helpers/PHPExcel/CalcEngine/Logger.php

@@ -0,0 +1,153 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+/**
+ * PHPExcel_CalcEngine_Logger
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_CalcEngine_Logger {
+
+	/**
+	 * Flag to determine whether a debug log should be generated by the calculation engine
+	 *		If true, then a debug log will be generated
+	 *		If false, then a debug log will not be generated
+	 *
+	 * @var boolean
+	 */
+	private $_writeDebugLog = FALSE;
+
+	/**
+	 * Flag to determine whether a debug log should be echoed by the calculation engine
+	 *		If true, then a debug log will be echoed
+	 *		If false, then a debug log will not be echoed
+	 * A debug log can only be echoed if it is generated
+	 *
+	 * @var boolean
+	 */
+	private $_echoDebugLog = FALSE;
+
+	/**
+	 * The debug log generated by the calculation engine
+	 *
+	 * @var string[]
+	 */
+	private $_debugLog = array();
+
+	/**
+	 * The calculation engine cell reference stack
+	 *
+	 * @var PHPExcel_CalcEngine_CyclicReferenceStack
+	 */
+	private $_cellStack;
+
+	
+	/**
+	 * Instantiate a Calculation engine logger
+	 *
+	 * @param  PHPExcel_CalcEngine_CyclicReferenceStack $stack
+	 */
+	public function __construct(PHPExcel_CalcEngine_CyclicReferenceStack $stack) {
+		$this->_cellStack = $stack;
+	}
+
+	/**
+	 * Enable/Disable Calculation engine logging
+	 *
+	 * @param  boolean $pValue
+	 */
+	public function setWriteDebugLog($pValue = FALSE) {
+		$this->_writeDebugLog = $pValue;
+	}
+
+	/**
+	 * Return whether calculation engine logging is enabled or disabled
+	 *
+	 * @return  boolean
+	 */
+	public function getWriteDebugLog() {
+		return $this->_writeDebugLog;
+	}
+
+	/**
+	 * Enable/Disable echoing of debug log information
+	 *
+	 * @param  boolean $pValue
+	 */
+	public function setEchoDebugLog($pValue = FALSE) {
+		$this->_echoDebugLog = $pValue;
+	}
+
+	/**
+	 * Return whether echoing of debug log information is enabled or disabled
+	 *
+	 * @return  boolean
+	 */
+	public function getEchoDebugLog() {
+		return $this->_echoDebugLog;
+	}
+
+	/**
+	 * Write an entry to the calculation engine debug log
+	 */
+	public function writeDebugLog() {
+		//	Only write the debug log if logging is enabled
+		if ($this->_writeDebugLog) {
+			$message = implode(func_get_args());
+			$cellReference = implode(' -> ', $this->_cellStack->showStack());
+			if ($this->_echoDebugLog) {
+				echo $cellReference, 
+					($this->_cellStack->count() > 0 ? ' => ' : ''), 
+					$message, 
+					PHP_EOL;
+			}
+			$this->_debugLog[] = $cellReference . 
+				($this->_cellStack->count() > 0 ? ' => ' : '') . 
+				$message;
+		}
+	}	//	function _writeDebug()
+
+	/**
+	 * Clear the calculation engine debug log
+	 */
+	public function clearLog() {
+		$this->_debugLog = array();
+	}	//	function flushLogger()
+
+	/**
+	 * Return the calculation engine debug log
+	 *
+	 * @return  string[]
+	 */
+	public function getLog() {
+		return $this->_debugLog;
+	}	//	function flushLogger()
+
+}	//	class PHPExcel_CalcEngine_Logger
+

admin/helpers/PHPExcel/CalcEngine/index.html

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+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/Calculation/Database.php

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+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Calculation_Database
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Database {
+
+
+	/**
+	 * __fieldExtract
+	 *
+	 * Extracts the column ID to use for the data field.
+	 *
+	 * @access	private
+	 * @param	mixed[]		$database		The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	mixed		$field			Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @return	string|NULL
+	 *
+	 */
+	private static function __fieldExtract($database,$field) {
+		$field = strtoupper(PHPExcel_Calculation_Functions::flattenSingleValue($field));
+		$fieldNames = array_map('strtoupper',array_shift($database));
+
+		if (is_numeric($field)) {
+			$keys = array_keys($fieldNames);
+			return $keys[$field-1];
+		}
+		$key = array_search($field,$fieldNames);
+		return ($key) ? $key : NULL;
+	}
+
+	/**
+	 * __filter
+	 *
+	 * Parses the selection criteria, extracts the database rows that match those criteria, and
+	 * returns that subset of rows.
+	 *
+	 * @access	private
+	 * @param	mixed[]		$database		The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	mixed[]		$criteria		The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	array of mixed
+	 *
+	 */
+	private static function __filter($database,$criteria) {
+		$fieldNames = array_shift($database);
+		$criteriaNames = array_shift($criteria);
+
+		//	Convert the criteria into a set of AND/OR conditions with [:placeholders]
+		$testConditions = $testValues = array();
+		$testConditionsCount = 0;
+		foreach($criteriaNames as $key => $criteriaName) {
+			$testCondition = array();
+			$testConditionCount = 0;
+			foreach($criteria as $row => $criterion) {
+				if ($criterion[$key] > '') {
+					$testCondition[] = '[:'.$criteriaName.']'.PHPExcel_Calculation_Functions::_ifCondition($criterion[$key]);
+					$testConditionCount++;
+				}
+			}
+			if ($testConditionCount > 1) {
+				$testConditions[] = 'OR('.implode(',',$testCondition).')';
+				$testConditionsCount++;
+			} elseif($testConditionCount == 1) {
+				$testConditions[] = $testCondition[0];
+				$testConditionsCount++;
+			}
+		}
+
+		if ($testConditionsCount > 1) {
+			$testConditionSet = 'AND('.implode(',',$testConditions).')';
+		} elseif($testConditionsCount == 1) {
+			$testConditionSet = $testConditions[0];
+		}
+
+		//	Loop through each row of the database
+		foreach($database as $dataRow => $dataValues) {
+			//	Substitute actual values from the database row for our [:placeholders]
+			$testConditionList = $testConditionSet;
+			foreach($criteriaNames as $key => $criteriaName) {
+				$k = array_search($criteriaName,$fieldNames);
+				if (isset($dataValues[$k])) {
+					$dataValue = $dataValues[$k];
+					$dataValue = (is_string($dataValue)) ? PHPExcel_Calculation::_wrapResult(strtoupper($dataValue)) : $dataValue;
+					$testConditionList = str_replace('[:'.$criteriaName.']',$dataValue,$testConditionList);
+				}
+			}
+			//	evaluate the criteria against the row data
+			$result = PHPExcel_Calculation::getInstance()->_calculateFormulaValue('='.$testConditionList);
+			//	If the row failed to meet the criteria, remove it from the database
+			if (!$result) {
+				unset($database[$dataRow]);
+			}
+		}
+
+		return $database;
+	}
+
+
+	/**
+	 * DAVERAGE
+	 *
+	 * Averages the values in a column of a list or database that match conditions you specify.
+	 *
+	 * Excel Function:
+	 *		DAVERAGE(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DAVERAGE($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::AVERAGE($colData);
+	}	//	function DAVERAGE()
+
+
+	/**
+	 * DCOUNT
+	 *
+	 * Counts the cells that contain numbers in a column of a list or database that match conditions
+	 * that you specify.
+	 *
+	 * Excel Function:
+	 *		DCOUNT(database,[field],criteria)
+	 *
+	 * Excel Function:
+	 *		DAVERAGE(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	integer
+	 *
+	 * @TODO	The field argument is optional. If field is omitted, DCOUNT counts all records in the
+	 *			database that match the criteria.
+	 *
+	 */
+	public static function DCOUNT($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::COUNT($colData);
+	}	//	function DCOUNT()
+
+
+	/**
+	 * DCOUNTA
+	 *
+	 * Counts the nonblank cells in a column of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DCOUNTA(database,[field],criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	integer
+	 *
+	 * @TODO	The field argument is optional. If field is omitted, DCOUNTA counts all records in the
+	 *			database that match the criteria.
+	 *
+	 */
+	public static function DCOUNTA($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::COUNTA($colData);
+	}	//	function DCOUNTA()
+
+
+	/**
+	 * DGET
+	 *
+	 * Extracts a single value from a column of a list or database that matches conditions that you
+	 * specify.
+	 *
+	 * Excel Function:
+	 *		DGET(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	mixed
+	 *
+	 */
+	public static function DGET($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		if (count($colData) > 1) {
+			return PHPExcel_Calculation_Functions::NaN();
+		}
+
+		return $colData[0];
+	}	//	function DGET()
+
+
+	/**
+	 * DMAX
+	 *
+	 * Returns the largest number in a column of a list or database that matches conditions you that
+	 * specify.
+	 *
+	 * Excel Function:
+	 *		DMAX(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DMAX($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::MAX($colData);
+	}	//	function DMAX()
+
+
+	/**
+	 * DMIN
+	 *
+	 * Returns the smallest number in a column of a list or database that matches conditions you that
+	 * specify.
+	 *
+	 * Excel Function:
+	 *		DMIN(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DMIN($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::MIN($colData);
+	}	//	function DMIN()
+
+
+	/**
+	 * DPRODUCT
+	 *
+	 * Multiplies the values in a column of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DPRODUCT(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DPRODUCT($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_MathTrig::PRODUCT($colData);
+	}	//	function DPRODUCT()
+
+
+	/**
+	 * DSTDEV
+	 *
+	 * Estimates the standard deviation of a population based on a sample by using the numbers in a
+	 * column of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DSTDEV(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DSTDEV($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::STDEV($colData);
+	}	//	function DSTDEV()
+
+
+	/**
+	 * DSTDEVP
+	 *
+	 * Calculates the standard deviation of a population based on the entire population by using the
+	 * numbers in a column of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DSTDEVP(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DSTDEVP($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::STDEVP($colData);
+	}	//	function DSTDEVP()
+
+
+	/**
+	 * DSUM
+	 *
+	 * Adds the numbers in a column of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DSUM(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DSUM($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_MathTrig::SUM($colData);
+	}	//	function DSUM()
+
+
+	/**
+	 * DVAR
+	 *
+	 * Estimates the variance of a population based on a sample by using the numbers in a column
+	 * of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DVAR(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DVAR($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::VARFunc($colData);
+	}	//	function DVAR()
+
+
+	/**
+	 * DVARP
+	 *
+	 * Calculates the variance of a population based on the entire population by using the numbers
+	 * in a column of a list or database that match conditions that you specify.
+	 *
+	 * Excel Function:
+	 *		DVARP(database,field,criteria)
+	 *
+	 * @access	public
+	 * @category Database Functions
+	 * @param	mixed[]			$database	The range of cells that makes up the list or database.
+	 *										A database is a list of related data in which rows of related
+	 *										information are records, and columns of data are fields. The
+	 *										first row of the list contains labels for each column.
+	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the
+	 *										column label enclosed between double quotation marks, such as
+	 *										"Age" or "Yield," or a number (without quotation marks) that
+	 *										represents the position of the column within the list: 1 for
+	 *										the first column, 2 for the second column, and so on.
+	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.
+	 *										You can use any range for the criteria argument, as long as it
+	 *										includes at least one column label and at least one cell below
+	 *										the column label in which you specify a condition for the
+	 *										column.
+	 * @return	float
+	 *
+	 */
+	public static function DVARP($database,$field,$criteria) {
+		$field = self::__fieldExtract($database,$field);
+		if (is_null($field)) {
+			return NULL;
+		}
+
+		//	reduce the database to a set of rows that match all the criteria
+		$database = self::__filter($database,$criteria);
+		//	extract an array of values for the requested column
+		$colData = array();
+		foreach($database as $row) {
+			$colData[] = $row[$field];
+		}
+
+		// Return
+		return PHPExcel_Calculation_Statistical::VARP($colData);
+	}	//	function DVARP()
+
+
+}	//	class PHPExcel_Calculation_Database

admin/helpers/PHPExcel/Calculation/Exception.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Calculation_Exception
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Exception extends PHPExcel_Exception {
+	/**
+	 * Error handler callback
+	 *
+	 * @param mixed $code
+	 * @param mixed $string
+	 * @param mixed $file
+	 * @param mixed $line
+	 * @param mixed $context
+	 */
+	public static function errorHandlerCallback($code, $string, $file, $line, $context) {
+		$e = new self($string, $code);
+		$e->line = $line;
+		$e->file = $file;
+		throw $e;
+	}
+}

admin/helpers/PHPExcel/Calculation/ExceptionHandler.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+/**
+ * PHPExcel_Calculation_ExceptionHandler
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_ExceptionHandler {
+	/**
+	 * Register errorhandler
+	 */
+	public function __construct() {
+		set_error_handler(array('PHPExcel_Calculation_Exception', 'errorHandlerCallback'), E_ALL);
+	}
+
+	/**
+	 * Unregister errorhandler
+	 */
+	public function __destruct() {
+		restore_error_handler();
+	}
+}

admin/helpers/PHPExcel/Calculation/FormulaParser.php

@@ -0,0 +1,614 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/*
+PARTLY BASED ON:
+	Copyright (c) 2007 E. W. Bachtal, Inc.
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+	and associated documentation files (the "Software"), to deal in the Software without restriction,
+	including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+	and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+	subject to the following conditions:
+
+	  The above copyright notice and this permission notice shall be included in all copies or substantial
+	  portions of the Software.
+
+	The software is provided "as is", without warranty of any kind, express or implied, including but not
+	limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In
+	no event shall the authors or copyright holders be liable for any claim, damages or other liability,
+	whether in an action of contract, tort or otherwise, arising from, out of or in connection with the
+	software or the use or other dealings in the software.
+
+	http://ewbi.blogs.com/develops/2007/03/excel_formula_p.html
+	http://ewbi.blogs.com/develops/2004/12/excel_formula_p.html
+*/
+
+/**
+ * PHPExcel_Calculation_FormulaParser
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_FormulaParser {
+	/* Character constants */
+	const QUOTE_DOUBLE  = '"';
+	const QUOTE_SINGLE  = '\'';
+	const BRACKET_CLOSE = ']';
+	const BRACKET_OPEN  = '[';
+	const BRACE_OPEN    = '{';
+	const BRACE_CLOSE   = '}';
+	const PAREN_OPEN    = '(';
+	const PAREN_CLOSE   = ')';
+	const SEMICOLON     = ';';
+	const WHITESPACE    = ' ';
+	const COMMA         = ',';
+	const ERROR_START   = '#';
+
+	const OPERATORS_SN 			= "+-";
+	const OPERATORS_INFIX 		= "+-*/^&=><";
+	const OPERATORS_POSTFIX 	= "%";
+
+	/**
+	 * Formula
+	 *
+	 * @var string
+	 */
+	private $_formula;
+
+	/**
+	 * Tokens
+	 *
+	 * @var PHPExcel_Calculation_FormulaToken[]
+	 */
+	private $_tokens = array();
+
+    /**
+     * Create a new PHPExcel_Calculation_FormulaParser
+     *
+     * @param 	string		$pFormula	Formula to parse
+     * @throws 	PHPExcel_Calculation_Exception
+     */
+    public function __construct($pFormula = '')
+    {
+    	// Check parameters
+    	if (is_null($pFormula)) {
+    		throw new PHPExcel_Calculation_Exception("Invalid parameter passed: formula");
+    	}
+
+    	// Initialise values
+    	$this->_formula = trim($pFormula);
+    	// Parse!
+    	$this->_parseToTokens();
+    }
+
+    /**
+     * Get Formula
+     *
+     * @return string
+     */
+    public function getFormula() {
+    	return $this->_formula;
+    }
+
+    /**
+     * Get Token
+     *
+     * @param 	int		$pId	Token id
+     * @return	string
+     * @throws  PHPExcel_Calculation_Exception
+     */
+    public function getToken($pId = 0) {
+    	if (isset($this->_tokens[$pId])) {
+    		return $this->_tokens[$pId];
+    	} else {
+    		throw new PHPExcel_Calculation_Exception("Token with id $pId does not exist.");
+    	}
+    }
+
+    /**
+     * Get Token count
+     *
+     * @return string
+     */
+    public function getTokenCount() {
+    	return count($this->_tokens);
+    }
+
+    /**
+     * Get Tokens
+     *
+     * @return PHPExcel_Calculation_FormulaToken[]
+     */
+    public function getTokens() {
+    	return $this->_tokens;
+    }
+
+    /**
+     * Parse to tokens
+     */
+    private function _parseToTokens() {
+		// No attempt is made to verify formulas; assumes formulas are derived from Excel, where
+		// they can only exist if valid; stack overflows/underflows sunk as nulls without exceptions.
+
+		// Check if the formula has a valid starting =
+		$formulaLength = strlen($this->_formula);
+		if ($formulaLength < 2 || $this->_formula{0} != '=') return;
+
+		// Helper variables
+		$tokens1	= $tokens2 	= $stack = array();
+		$inString	= $inPath 	= $inRange 	= $inError = false;
+		$token		= $previousToken	= $nextToken	= null;
+
+		$index	= 1;
+		$value	= '';
+
+		$ERRORS 			= array("#NULL!", "#DIV/0!", "#VALUE!", "#REF!", "#NAME?", "#NUM!", "#N/A");
+		$COMPARATORS_MULTI 	= array(">=", "<=", "<>");
+
+		while ($index < $formulaLength) {
+			// state-dependent character evaluation (order is important)
+
+			// double-quoted strings
+			// embeds are doubled
+			// end marks token
+			if ($inString) {
+				if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE) {
+					if ((($index + 2) <= $formulaLength) && ($this->_formula{$index + 1} == PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE)) {
+						$value .= PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE;
+						++$index;
+					} else {
+						$inString = false;
+						$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_TEXT);
+						$value = "";
+					}
+				} else {
+					$value .= $this->_formula{$index};
+				}
+				++$index;
+				continue;
+			}
+
+			// single-quoted strings (links)
+			// embeds are double
+			// end does not mark a token
+			if ($inPath) {
+				if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE) {
+					if ((($index + 2) <= $formulaLength) && ($this->_formula{$index + 1} == PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE)) {
+						$value .= PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE;
+						++$index;
+					} else {
+						$inPath = false;
+					}
+				} else {
+					$value .= $this->_formula{$index};
+				}
+				++$index;
+				continue;
+			}
+
+			// bracked strings (R1C1 range index or linked workbook name)
+			// no embeds (changed to "()" by Excel)
+			// end does not mark a token
+			if ($inRange) {
+				if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACKET_CLOSE) {
+					$inRange = false;
+				}
+				$value .= $this->_formula{$index};
+				++$index;
+				continue;
+			}
+
+			// error values
+			// end marks a token, determined from absolute list of values
+			if ($inError) {
+				$value .= $this->_formula{$index};
+				++$index;
+				if (in_array($value, $ERRORS)) {
+					$inError = false;
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_ERROR);
+					$value = "";
+				}
+				continue;
+			}
+
+			// scientific notation check
+			if (strpos(PHPExcel_Calculation_FormulaParser::OPERATORS_SN, $this->_formula{$index}) !== false) {
+				if (strlen($value) > 1) {
+					if (preg_match("/^[1-9]{1}(\.[0-9]+)?E{1}$/", $this->_formula{$index}) != 0) {
+						$value .= $this->_formula{$index};
+						++$index;
+						continue;
+					}
+				}
+			}
+
+			// independent character evaluation (order not important)
+
+			// establish state-dependent character evaluations
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE) {
+				if (strlen($value > 0)) {  // unexpected
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);
+					$value = "";
+				}
+				$inString = true;
+				++$index;
+				continue;
+ 			}
+
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE) {
+				if (strlen($value) > 0) { // unexpected
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);
+					$value = "";
+				}
+				$inPath = true;
+				++$index;
+				continue;
+			}
+
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACKET_OPEN) {
+				$inRange = true;
+				$value .= PHPExcel_Calculation_FormulaParser::BRACKET_OPEN;
+				++$index;
+				continue;
+			}
+
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::ERROR_START) {
+				if (strlen($value) > 0) { // unexpected
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);
+					$value = "";
+				}
+				$inError = true;
+				$value .= PHPExcel_Calculation_FormulaParser::ERROR_START;
+				++$index;
+				continue;
+			}
+
+			// mark start and end of arrays and array rows
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACE_OPEN) {
+				if (strlen($value) > 0) { // unexpected
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);
+					$value = "";
+				}
+
+				$tmp = new PHPExcel_Calculation_FormulaToken("ARRAY", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);
+				$tokens1[] = $tmp;
+				$stack[] = clone $tmp;
+
+				$tmp = new PHPExcel_Calculation_FormulaToken("ARRAYROW", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);
+				$tokens1[] = $tmp;
+				$stack[] = clone $tmp;
+
+				++$index;
+				continue;
+			}
+
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::SEMICOLON) {
+				if (strlen($value) > 0) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+
+				$tmp = array_pop($stack);
+				$tmp->setValue("");
+				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);
+				$tokens1[] = $tmp;
+
+				$tmp = new PHPExcel_Calculation_FormulaToken(",", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_ARGUMENT);
+				$tokens1[] = $tmp;
+
+				$tmp = new PHPExcel_Calculation_FormulaToken("ARRAYROW", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);
+				$tokens1[] = $tmp;
+				$stack[] = clone $tmp;
+
+				++$index;
+				continue;
+			}
+
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACE_CLOSE) {
+				if (strlen($value) > 0) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+
+				$tmp = array_pop($stack);
+				$tmp->setValue("");
+				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);
+				$tokens1[] = $tmp;
+
+				$tmp = array_pop($stack);
+				$tmp->setValue("");
+				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);
+				$tokens1[] = $tmp;
+
+				++$index;
+				continue;
+			}
+
+			// trim white-space
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::WHITESPACE) {
+				if (strlen($value) > 0) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+				$tokens1[] = new PHPExcel_Calculation_FormulaToken("", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_WHITESPACE);
+				++$index;
+				while (($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::WHITESPACE) && ($index < $formulaLength)) {
+					++$index;
+				}
+				continue;
+			}
+
+			// multi-character comparators
+			if (($index + 2) <= $formulaLength) {
+				if (in_array(substr($this->_formula, $index, 2), $COMPARATORS_MULTI)) {
+					if (strlen($value) > 0) {
+						$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+						$value = "";
+					}
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken(substr($this->_formula, $index, 2), PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_LOGICAL);
+					$index += 2;
+					continue;
+				}
+			}
+
+			// standard infix operators
+			if (strpos(PHPExcel_Calculation_FormulaParser::OPERATORS_INFIX, $this->_formula{$index}) !== false) {
+				if (strlen($value) > 0) {
+					$tokens1[] =new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+				$tokens1[] = new PHPExcel_Calculation_FormulaToken($this->_formula{$index}, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX);
+				++$index;
+				continue;
+			}
+
+			// standard postfix operators (only one)
+			if (strpos(PHPExcel_Calculation_FormulaParser::OPERATORS_POSTFIX, $this->_formula{$index}) !== false) {
+				if (strlen($value) > 0) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+				$tokens1[] = new PHPExcel_Calculation_FormulaToken($this->_formula{$index}, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX);
+				++$index;
+				continue;
+			}
+
+			// start subexpression or function
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::PAREN_OPEN) {
+				if (strlen($value) > 0) {
+					$tmp = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);
+					$tokens1[] = $tmp;
+					$stack[] = clone $tmp;
+					$value = "";
+				} else {
+					$tmp = new PHPExcel_Calculation_FormulaToken("", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);
+					$tokens1[] = $tmp;
+					$stack[] = clone $tmp;
+				}
+				++$index;
+				continue;
+			}
+
+			// function, subexpression, or array parameters, or operand unions
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::COMMA) {
+				if (strlen($value) > 0) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+
+				$tmp = array_pop($stack);
+				$tmp->setValue("");
+				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);
+				$stack[] = $tmp;
+
+				if ($tmp->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken(",", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_UNION);
+				} else {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken(",", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_ARGUMENT);
+				}
+				++$index;
+				continue;
+			}
+
+			// stop subexpression
+			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::PAREN_CLOSE) {
+				if (strlen($value) > 0) {
+					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+					$value = "";
+				}
+
+				$tmp = array_pop($stack);
+				$tmp->setValue("");
+				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);
+				$tokens1[] = $tmp;
+
+				++$index;
+				continue;
+			}
+
+        	// token accumulation
+			$value .= $this->_formula{$index};
+			++$index;
+		}
+
+		// dump remaining accumulation
+		if (strlen($value) > 0) {
+			$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);
+		}
+
+		// move tokenList to new set, excluding unnecessary white-space tokens and converting necessary ones to intersections
+		$tokenCount = count($tokens1);
+		for ($i = 0; $i < $tokenCount; ++$i) {
+			$token = $tokens1[$i];
+			if (isset($tokens1[$i - 1])) {
+				$previousToken = $tokens1[$i - 1];
+			} else {
+				$previousToken = null;
+			}
+			if (isset($tokens1[$i + 1])) {
+				$nextToken = $tokens1[$i + 1];
+			} else {
+				$nextToken = null;
+			}
+
+			if (is_null($token)) {
+				continue;
+			}
+
+			if ($token->getTokenType() != PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_WHITESPACE) {
+				$tokens2[] = $token;
+				continue;
+			}
+
+			if (is_null($previousToken)) {
+				continue;
+			}
+
+			if (! (
+					(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+					(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+					($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)
+				  ) ) {
+				continue;
+			}
+
+			if (is_null($nextToken)) {
+				continue;
+			}
+
+			if (! (
+					(($nextToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($nextToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START)) ||
+					(($nextToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($nextToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START)) ||
+					($nextToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)
+				  ) ) {
+				continue;
+			}
+
+			$tokens2[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_INTERSECTION);
+		}
+
+		// move tokens to final list, switching infix "-" operators to prefix when appropriate, switching infix "+" operators
+		// to noop when appropriate, identifying operand and infix-operator subtypes, and pulling "@" from function names
+		$this->_tokens = array();
+
+		$tokenCount = count($tokens2);
+		for ($i = 0; $i < $tokenCount; ++$i) {
+			$token = $tokens2[$i];
+			if (isset($tokens2[$i - 1])) {
+				$previousToken = $tokens2[$i - 1];
+			} else {
+				$previousToken = null;
+			}
+			if (isset($tokens2[$i + 1])) {
+				$nextToken = $tokens2[$i + 1];
+			} else {
+				$nextToken = null;
+			}
+
+			if (is_null($token)) {
+				continue;
+			}
+
+			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getValue() == "-") {
+				if ($i == 0) {
+					$token->setTokenType(PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPREFIX);
+				} else if (
+							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX) ||
+							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)
+						) {
+					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_MATH);
+				} else {
+					$token->setTokenType(PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPREFIX);
+				}
+
+				$this->_tokens[] = $token;
+				continue;
+			}
+
+			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getValue() == "+") {
+				if ($i == 0) {
+					continue;
+				} else if (
+							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||
+							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX) ||
+							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)
+						) {
+					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_MATH);
+				} else {
+					continue;
+				}
+
+				$this->_tokens[] = $token;
+				continue;
+			}
+
+			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {
+				if (strpos("<>=", substr($token->getValue(), 0, 1)) !== false) {
+					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_LOGICAL);
+				} else if ($token->getValue() == "&") {
+					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_CONCATENATION);
+				} else {
+					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_MATH);
+				}
+
+				$this->_tokens[] = $token;
+				continue;
+			}
+
+			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND && $token->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {
+				if (!is_numeric($token->getValue())) {
+					if (strtoupper($token->getValue()) == "TRUE" || strtoupper($token->getValue() == "FALSE")) {
+						$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_LOGICAL);
+					} else {
+						$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_RANGE);
+					}
+				} else {
+					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NUMBER);
+				}
+
+				$this->_tokens[] = $token;
+				continue;
+			}
+
+			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) {
+				if (strlen($token->getValue() > 0)) {
+					if (substr($token->getValue(), 0, 1) == "@") {
+						$token->setValue(substr($token->getValue(), 1));
+					}
+				}
+			}
+
+        	$this->_tokens[] = $token;
+		}
+    }
+}

admin/helpers/PHPExcel/Calculation/FormulaToken.php

@@ -0,0 +1,176 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/*
+PARTLY BASED ON:
+	Copyright (c) 2007 E. W. Bachtal, Inc.
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+	and associated documentation files (the "Software"), to deal in the Software without restriction,
+	including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+	and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+	subject to the following conditions:
+
+	  The above copyright notice and this permission notice shall be included in all copies or substantial
+	  portions of the Software.
+
+	The software is provided "as is", without warranty of any kind, express or implied, including but not
+	limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In
+	no event shall the authors or copyright holders be liable for any claim, damages or other liability,
+	whether in an action of contract, tort or otherwise, arising from, out of or in connection with the
+	software or the use or other dealings in the software.
+
+	http://ewbi.blogs.com/develops/2007/03/excel_formula_p.html
+	http://ewbi.blogs.com/develops/2004/12/excel_formula_p.html
+*/
+
+
+/**
+ * PHPExcel_Calculation_FormulaToken
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_FormulaToken {
+	/* Token types */
+	const TOKEN_TYPE_NOOP					= 'Noop';
+	const TOKEN_TYPE_OPERAND				= 'Operand';
+	const TOKEN_TYPE_FUNCTION				= 'Function';
+	const TOKEN_TYPE_SUBEXPRESSION			= 'Subexpression';
+	const TOKEN_TYPE_ARGUMENT				= 'Argument';
+	const TOKEN_TYPE_OPERATORPREFIX			= 'OperatorPrefix';
+	const TOKEN_TYPE_OPERATORINFIX			= 'OperatorInfix';
+	const TOKEN_TYPE_OPERATORPOSTFIX		= 'OperatorPostfix';
+	const TOKEN_TYPE_WHITESPACE				= 'Whitespace';
+	const TOKEN_TYPE_UNKNOWN				= 'Unknown';
+
+	/* Token subtypes */
+	const TOKEN_SUBTYPE_NOTHING				= 'Nothing';
+	const TOKEN_SUBTYPE_START				= 'Start';
+	const TOKEN_SUBTYPE_STOP				= 'Stop';
+	const TOKEN_SUBTYPE_TEXT				= 'Text';
+	const TOKEN_SUBTYPE_NUMBER				= 'Number';
+	const TOKEN_SUBTYPE_LOGICAL				= 'Logical';
+	const TOKEN_SUBTYPE_ERROR				= 'Error';
+	const TOKEN_SUBTYPE_RANGE				= 'Range';
+	const TOKEN_SUBTYPE_MATH				= 'Math';
+	const TOKEN_SUBTYPE_CONCATENATION		= 'Concatenation';
+	const TOKEN_SUBTYPE_INTERSECTION		= 'Intersection';
+	const TOKEN_SUBTYPE_UNION				= 'Union';
+
+	/**
+	 * Value
+	 *
+	 * @var string
+	 */
+	private $_value;
+
+	/**
+	 * Token Type (represented by TOKEN_TYPE_*)
+	 *
+	 * @var string
+	 */
+	private $_tokenType;
+
+	/**
+	 * Token SubType (represented by TOKEN_SUBTYPE_*)
+	 *
+	 * @var string
+	 */
+	private $_tokenSubType;
+
+    /**
+     * Create a new PHPExcel_Calculation_FormulaToken
+     *
+     * @param string	$pValue
+     * @param string	$pTokenType 	Token type (represented by TOKEN_TYPE_*)
+     * @param string	$pTokenSubType 	Token Subtype (represented by TOKEN_SUBTYPE_*)
+     */
+    public function __construct($pValue, $pTokenType = PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN, $pTokenSubType = PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING)
+    {
+    	// Initialise values
+    	$this->_value				= $pValue;
+    	$this->_tokenType			= $pTokenType;
+    	$this->_tokenSubType 		= $pTokenSubType;
+    }
+
+    /**
+     * Get Value
+     *
+     * @return string
+     */
+    public function getValue() {
+    	return $this->_value;
+    }
+
+    /**
+     * Set Value
+     *
+     * @param string	$value
+     */
+    public function setValue($value) {
+    	$this->_value = $value;
+    }
+
+    /**
+     * Get Token Type (represented by TOKEN_TYPE_*)
+     *
+     * @return string
+     */
+    public function getTokenType() {
+    	return $this->_tokenType;
+    }
+
+    /**
+     * Set Token Type
+     *
+     * @param string	$value
+     */
+    public function setTokenType($value = PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN) {
+    	$this->_tokenType = $value;
+    }
+
+    /**
+     * Get Token SubType (represented by TOKEN_SUBTYPE_*)
+     *
+     * @return string
+     */
+    public function getTokenSubType() {
+    	return $this->_tokenSubType;
+    }
+
+    /**
+     * Set Token SubType
+     *
+     * @param string	$value
+     */
+    public function setTokenSubType($value = PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {
+    	$this->_tokenSubType = $value;
+    }
+}

admin/helpers/PHPExcel/Calculation/Function.php

@@ -0,0 +1,149 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Calculation_Function
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Function {
+	/* Function categories */
+	const CATEGORY_CUBE						= 'Cube';
+	const CATEGORY_DATABASE					= 'Database';
+	const CATEGORY_DATE_AND_TIME			= 'Date and Time';
+	const CATEGORY_ENGINEERING				= 'Engineering';
+	const CATEGORY_FINANCIAL				= 'Financial';
+	const CATEGORY_INFORMATION				= 'Information';
+	const CATEGORY_LOGICAL					= 'Logical';
+	const CATEGORY_LOOKUP_AND_REFERENCE		= 'Lookup and Reference';
+	const CATEGORY_MATH_AND_TRIG			= 'Math and Trig';
+	const CATEGORY_STATISTICAL				= 'Statistical';
+	const CATEGORY_TEXT_AND_DATA			= 'Text and Data';
+
+	/**
+	 * Category (represented by CATEGORY_*)
+	 *
+	 * @var string
+	 */
+	private $_category;
+
+	/**
+	 * Excel name
+	 *
+	 * @var string
+	 */
+	private $_excelName;
+
+	/**
+	 * PHPExcel name
+	 *
+	 * @var string
+	 */
+	private $_phpExcelName;
+
+    /**
+     * Create a new PHPExcel_Calculation_Function
+     *
+     * @param 	string		$pCategory 		Category (represented by CATEGORY_*)
+     * @param 	string		$pExcelName		Excel function name
+     * @param 	string		$pPHPExcelName	PHPExcel function mapping
+     * @throws 	PHPExcel_Calculation_Exception
+     */
+    public function __construct($pCategory = NULL, $pExcelName = NULL, $pPHPExcelName = NULL)
+    {
+    	if (($pCategory !== NULL) && ($pExcelName !== NULL) && ($pPHPExcelName !== NULL)) {
+    		// Initialise values
+    		$this->_category 		= $pCategory;
+    		$this->_excelName 		= $pExcelName;
+    		$this->_phpExcelName 	= $pPHPExcelName;
+    	} else {
+    		throw new PHPExcel_Calculation_Exception("Invalid parameters passed.");
+    	}
+    }
+
+    /**
+     * Get Category (represented by CATEGORY_*)
+     *
+     * @return string
+     */
+    public function getCategory() {
+    	return $this->_category;
+    }
+
+    /**
+     * Set Category (represented by CATEGORY_*)
+     *
+     * @param 	string		$value
+     * @throws 	PHPExcel_Calculation_Exception
+     */
+    public function setCategory($value = null) {
+    	if (!is_null($value)) {
+    		$this->_category = $value;
+    	} else {
+    		throw new PHPExcel_Calculation_Exception("Invalid parameter passed.");
+    	}
+    }
+
+    /**
+     * Get Excel name
+     *
+     * @return string
+     */
+    public function getExcelName() {
+    	return $this->_excelName;
+    }
+
+    /**
+     * Set Excel name
+     *
+     * @param string	$value
+     */
+    public function setExcelName($value) {
+    	$this->_excelName = $value;
+    }
+
+    /**
+     * Get PHPExcel name
+     *
+     * @return string
+     */
+    public function getPHPExcelName() {
+    	return $this->_phpExcelName;
+    }
+
+    /**
+     * Set PHPExcel name
+     *
+     * @param string	$value
+     */
+    public function setPHPExcelName($value) {
+    	$this->_phpExcelName = $value;
+    }
+}

admin/helpers/PHPExcel/Calculation/Functions.php

@@ -0,0 +1,725 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/** MAX_VALUE */
+define('MAX_VALUE', 1.2e308);
+
+/** 2 / PI */
+define('M_2DIVPI', 0.63661977236758134307553505349006);
+
+/** MAX_ITERATIONS */
+define('MAX_ITERATIONS', 256);
+
+/** PRECISION */
+define('PRECISION', 8.88E-016);
+
+
+/**
+ * PHPExcel_Calculation_Functions
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Functions {
+
+	/** constants */
+	const COMPATIBILITY_EXCEL		= 'Excel';
+	const COMPATIBILITY_GNUMERIC	= 'Gnumeric';
+	const COMPATIBILITY_OPENOFFICE	= 'OpenOfficeCalc';
+
+	const RETURNDATE_PHP_NUMERIC	= 'P';
+	const RETURNDATE_PHP_OBJECT		= 'O';
+	const RETURNDATE_EXCEL			= 'E';
+
+
+	/**
+	 * Compatibility mode to use for error checking and responses
+	 *
+	 * @access	private
+	 * @var string
+	 */
+	protected static $compatibilityMode	= self::COMPATIBILITY_EXCEL;
+
+	/**
+	 * Data Type to use when returning date values
+	 *
+	 * @access	private
+	 * @var string
+	 */
+	protected static $ReturnDateType	= self::RETURNDATE_EXCEL;
+
+	/**
+	 * List of error codes
+	 *
+	 * @access	private
+	 * @var array
+	 */
+	protected static $_errorCodes	= array( 'null'				=> '#NULL!',
+											 'divisionbyzero'	=> '#DIV/0!',
+											 'value'			=> '#VALUE!',
+											 'reference'		=> '#REF!',
+											 'name'				=> '#NAME?',
+											 'num'				=> '#NUM!',
+											 'na'				=> '#N/A',
+											 'gettingdata'		=> '#GETTING_DATA'
+										   );
+
+
+	/**
+	 * Set the Compatibility Mode
+	 *
+	 * @access	public
+	 * @category Function Configuration
+	 * @param	 string		$compatibilityMode		Compatibility Mode
+	 *												Permitted values are:
+	 *													PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL			'Excel'
+	 *													PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC		'Gnumeric'
+	 *													PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE	'OpenOfficeCalc'
+	 * @return	 boolean	(Success or Failure)
+	 */
+	public static function setCompatibilityMode($compatibilityMode) {
+		if (($compatibilityMode == self::COMPATIBILITY_EXCEL) ||
+			($compatibilityMode == self::COMPATIBILITY_GNUMERIC) ||
+			($compatibilityMode == self::COMPATIBILITY_OPENOFFICE)) {
+			self::$compatibilityMode = $compatibilityMode;
+			return True;
+		}
+		return False;
+	}	//	function setCompatibilityMode()
+
+
+	/**
+	 * Return the current Compatibility Mode
+	 *
+	 * @access	public
+	 * @category Function Configuration
+	 * @return	 string		Compatibility Mode
+	 *							Possible Return values are:
+	 *								PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL			'Excel'
+	 *								PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC		'Gnumeric'
+	 *								PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE	'OpenOfficeCalc'
+	 */
+	public static function getCompatibilityMode() {
+		return self::$compatibilityMode;
+	}	//	function getCompatibilityMode()
+
+
+	/**
+	 * Set the Return Date Format used by functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object)
+	 *
+	 * @access	public
+	 * @category Function Configuration
+	 * @param	 string	$returnDateType			Return Date Format
+	 *												Permitted values are:
+	 *													PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC		'P'
+	 *													PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT		'O'
+	 *													PHPExcel_Calculation_Functions::RETURNDATE_EXCEL			'E'
+	 * @return	 boolean							Success or failure
+	 */
+	public static function setReturnDateType($returnDateType) {
+		if (($returnDateType == self::RETURNDATE_PHP_NUMERIC) ||
+			($returnDateType == self::RETURNDATE_PHP_OBJECT) ||
+			($returnDateType == self::RETURNDATE_EXCEL)) {
+			self::$ReturnDateType = $returnDateType;
+			return True;
+		}
+		return False;
+	}	//	function setReturnDateType()
+
+
+	/**
+	 * Return the current Return Date Format for functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object)
+	 *
+	 * @access	public
+	 * @category Function Configuration
+	 * @return	 string		Return Date Format
+	 *							Possible Return values are:
+	 *								PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC		'P'
+	 *								PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT		'O'
+	 *								PHPExcel_Calculation_Functions::RETURNDATE_EXCEL			'E'
+	 */
+	public static function getReturnDateType() {
+		return self::$ReturnDateType;
+	}	//	function getReturnDateType()
+
+
+	/**
+	 * DUMMY
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#Not Yet Implemented
+	 */
+	public static function DUMMY() {
+		return '#Not Yet Implemented';
+	}	//	function DUMMY()
+
+
+	/**
+	 * DIV0
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#Not Yet Implemented
+	 */
+	public static function DIV0() {
+		return self::$_errorCodes['divisionbyzero'];
+	}	//	function DIV0()
+
+
+	/**
+	 * NA
+	 *
+	 * Excel Function:
+	 *		=NA()
+	 *
+	 * Returns the error value #N/A
+	 *		#N/A is the error value that means "no value is available."
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @return	string	#N/A!
+	 */
+	public static function NA() {
+		return self::$_errorCodes['na'];
+	}	//	function NA()
+
+
+	/**
+	 * NaN
+	 *
+	 * Returns the error value #NUM!
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#NUM!
+	 */
+	public static function NaN() {
+		return self::$_errorCodes['num'];
+	}	//	function NaN()
+
+
+	/**
+	 * NAME
+	 *
+	 * Returns the error value #NAME?
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#NAME?
+	 */
+	public static function NAME() {
+		return self::$_errorCodes['name'];
+	}	//	function NAME()
+
+
+	/**
+	 * REF
+	 *
+	 * Returns the error value #REF!
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#REF!
+	 */
+	public static function REF() {
+		return self::$_errorCodes['reference'];
+	}	//	function REF()
+
+
+	/**
+	 * NULL
+	 *
+	 * Returns the error value #NULL!
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#NULL!
+	 */
+	public static function NULL() {
+		return self::$_errorCodes['null'];
+	}	//	function NULL()
+
+
+	/**
+	 * VALUE
+	 *
+	 * Returns the error value #VALUE!
+	 *
+	 * @access	public
+	 * @category Error Returns
+	 * @return	string	#VALUE!
+	 */
+	public static function VALUE() {
+		return self::$_errorCodes['value'];
+	}	//	function VALUE()
+
+
+	public static function isMatrixValue($idx) {
+		return ((substr_count($idx,'.') <= 1) || (preg_match('/\.[A-Z]/',$idx) > 0));
+	}
+
+
+	public static function isValue($idx) {
+		return (substr_count($idx,'.') == 0);
+	}
+
+
+	public static function isCellValue($idx) {
+		return (substr_count($idx,'.') > 1);
+	}
+
+
+	public static function _ifCondition($condition) {
+		$condition	= PHPExcel_Calculation_Functions::flattenSingleValue($condition);
+		if (!isset($condition{0}))
+			$condition = '=""';
+		if (!in_array($condition{0},array('>', '<', '='))) {
+			if (!is_numeric($condition)) { $condition = PHPExcel_Calculation::_wrapResult(strtoupper($condition)); }
+			return '='.$condition;
+		} else {
+			preg_match('/([<>=]+)(.*)/',$condition,$matches);
+			list(,$operator,$operand) = $matches;
+
+			if (!is_numeric($operand)) {
+				$operand = str_replace('"', '""', $operand);
+				$operand = PHPExcel_Calculation::_wrapResult(strtoupper($operand));
+			}
+
+			return $operator.$operand;
+		}
+	}	//	function _ifCondition()
+
+
+	/**
+	 * ERROR_TYPE
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function ERROR_TYPE($value = '') {
+		$value	= self::flattenSingleValue($value);
+
+		$i = 1;
+		foreach(self::$_errorCodes as $errorCode) {
+			if ($value === $errorCode) {
+				return $i;
+			}
+			++$i;
+		}
+		return self::NA();
+	}	//	function ERROR_TYPE()
+
+
+	/**
+	 * IS_BLANK
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function IS_BLANK($value = NULL) {
+		if (!is_null($value)) {
+			$value	= self::flattenSingleValue($value);
+		}
+
+		return is_null($value);
+	}	//	function IS_BLANK()
+
+
+	/**
+	 * IS_ERR
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function IS_ERR($value = '') {
+		$value		= self::flattenSingleValue($value);
+
+		return self::IS_ERROR($value) && (!self::IS_NA($value));
+	}	//	function IS_ERR()
+
+
+	/**
+	 * IS_ERROR
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function IS_ERROR($value = '') {
+		$value		= self::flattenSingleValue($value);
+
+		if (!is_string($value))
+			return false;
+		return in_array($value, array_values(self::$_errorCodes));
+	}	//	function IS_ERROR()
+
+
+	/**
+	 * IS_NA
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function IS_NA($value = '') {
+		$value		= self::flattenSingleValue($value);
+
+		return ($value === self::NA());
+	}	//	function IS_NA()
+
+
+	/**
+	 * IS_EVEN
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function IS_EVEN($value = NULL) {
+		$value = self::flattenSingleValue($value);
+
+		if ($value === NULL)
+			return self::NAME();
+		if ((is_bool($value)) || ((is_string($value)) && (!is_numeric($value))))
+			return self::VALUE();
+		return ($value % 2 == 0);
+	}	//	function IS_EVEN()
+
+
+	/**
+	 * IS_ODD
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function IS_ODD($value = NULL) {
+		$value = self::flattenSingleValue($value);
+
+		if ($value === NULL)
+			return self::NAME();
+		if ((is_bool($value)) || ((is_string($value)) && (!is_numeric($value))))
+			return self::VALUE();
+		return (abs($value) % 2 == 1);
+	}	//	function IS_ODD()
+
+
+	/**
+	 * IS_NUMBER
+	 *
+	 * @param	mixed	$value		Value to check
+	 * @return	boolean
+	 */
+	public static function IS_NUMBER($value = NULL) {
+		$value		= self::flattenSingleValue($value);
+
+		if (is_string($value)) {
+			return False;
+		}
+		return is_numeric($value);
+	}	//	function IS_NUMBER()
+
+
+	/**
+	 * IS_LOGICAL
+	 *
+	 * @param	mixed	$value		Value to check
+	 * @return	boolean
+	 */
+	public static function IS_LOGICAL($value = NULL) {
+		$value		= self::flattenSingleValue($value);
+
+		return is_bool($value);
+	}	//	function IS_LOGICAL()
+
+
+	/**
+	 * IS_TEXT
+	 *
+	 * @param	mixed	$value		Value to check
+	 * @return	boolean
+	 */
+	public static function IS_TEXT($value = NULL) {
+		$value		= self::flattenSingleValue($value);
+
+		return (is_string($value) && !self::IS_ERROR($value));
+	}	//	function IS_TEXT()
+
+
+	/**
+	 * IS_NONTEXT
+	 *
+	 * @param	mixed	$value		Value to check
+	 * @return	boolean
+	 */
+	public static function IS_NONTEXT($value = NULL) {
+		return !self::IS_TEXT($value);
+	}	//	function IS_NONTEXT()
+
+
+	/**
+	 * VERSION
+	 *
+	 * @return	string	Version information
+	 */
+	public static function VERSION() {
+		return 'PHPExcel ##VERSION##, ##DATE##';
+	}	//	function VERSION()
+
+
+	/**
+	 * N
+	 *
+	 * Returns a value converted to a number
+	 *
+	 * @param	value		The value you want converted
+	 * @return	number		N converts values listed in the following table
+	 *		If value is or refers to N returns
+	 *		A number			That number
+	 *		A date				The serial number of that date
+	 *		TRUE				1
+	 *		FALSE				0
+	 *		An error value		The error value
+	 *		Anything else		0
+	 */
+	public static function N($value = NULL) {
+		while (is_array($value)) {
+			$value = array_shift($value);
+		}
+
+		switch (gettype($value)) {
+			case 'double'	:
+			case 'float'	:
+			case 'integer'	:
+				return $value;
+				break;
+			case 'boolean'	:
+				return (integer) $value;
+				break;
+			case 'string'	:
+				//	Errors
+				if ((strlen($value) > 0) && ($value{0} == '#')) {
+					return $value;
+				}
+				break;
+		}
+		return 0;
+	}	//	function N()
+
+
+	/**
+	 * TYPE
+	 *
+	 * Returns a number that identifies the type of a value
+	 *
+	 * @param	value		The value you want tested
+	 * @return	number		N converts values listed in the following table
+	 *		If value is or refers to N returns
+	 *		A number			1
+	 *		Text				2
+	 *		Logical Value		4
+	 *		An error value		16
+	 *		Array or Matrix		64
+	 */
+	public static function TYPE($value = NULL) {
+		$value	= self::flattenArrayIndexed($value);
+		if (is_array($value) && (count($value) > 1)) {
+			$a = array_keys($value);
+			$a = array_pop($a);
+			//	Range of cells is an error
+			if (self::isCellValue($a)) {
+				return 16;
+			//	Test for Matrix
+			} elseif (self::isMatrixValue($a)) {
+				return 64;
+			}
+		} elseif(empty($value)) {
+			//	Empty Cell
+			return 1;
+		}
+		$value	= self::flattenSingleValue($value);
+
+		if (($value === NULL) || (is_float($value)) || (is_int($value))) {
+				return 1;
+		} elseif(is_bool($value)) {
+				return 4;
+		} elseif(is_array($value)) {
+				return 64;
+		} elseif(is_string($value)) {
+			//	Errors
+			if ((strlen($value) > 0) && ($value{0} == '#')) {
+				return 16;
+			}
+			return 2;
+		}
+		return 0;
+	}	//	function TYPE()
+
+
+	/**
+	 * Convert a multi-dimensional array to a simple 1-dimensional array
+	 *
+	 * @param	array	$array	Array to be flattened
+	 * @return	array	Flattened array
+	 */
+	public static function flattenArray($array) {
+		if (!is_array($array)) {
+			return (array) $array;
+		}
+
+		$arrayValues = array();
+		foreach ($array as $value) {
+			if (is_array($value)) {
+				foreach ($value as $val) {
+					if (is_array($val)) {
+						foreach ($val as $v) {
+							$arrayValues[] = $v;
+						}
+					} else {
+						$arrayValues[] = $val;
+					}
+				}
+			} else {
+				$arrayValues[] = $value;
+			}
+		}
+
+		return $arrayValues;
+	}	//	function flattenArray()
+
+
+	/**
+	 * Convert a multi-dimensional array to a simple 1-dimensional array, but retain an element of indexing
+	 *
+	 * @param	array	$array	Array to be flattened
+	 * @return	array	Flattened array
+	 */
+	public static function flattenArrayIndexed($array) {
+		if (!is_array($array)) {
+			return (array) $array;
+		}
+
+		$arrayValues = array();
+		foreach ($array as $k1 => $value) {
+			if (is_array($value)) {
+				foreach ($value as $k2 => $val) {
+					if (is_array($val)) {
+						foreach ($val as $k3 => $v) {
+							$arrayValues[$k1.'.'.$k2.'.'.$k3] = $v;
+						}
+					} else {
+						$arrayValues[$k1.'.'.$k2] = $val;
+					}
+				}
+			} else {
+				$arrayValues[$k1] = $value;
+			}
+		}
+
+		return $arrayValues;
+	}	//	function flattenArrayIndexed()
+
+
+	/**
+	 * Convert an array to a single scalar value by extracting the first element
+	 *
+	 * @param	mixed		$value		Array or scalar value
+	 * @return	mixed
+	 */
+	public static function flattenSingleValue($value = '') {
+		while (is_array($value)) {
+			$value = array_pop($value);
+		}
+
+		return $value;
+	}	//	function flattenSingleValue()
+
+}	//	class PHPExcel_Calculation_Functions
+
+
+//
+//	There are a few mathematical functions that aren't available on all versions of PHP for all platforms
+//	These functions aren't available in Windows implementations of PHP prior to version 5.3.0
+//	So we test if they do exist for this version of PHP/operating platform; and if not we create them
+//
+if (!function_exists('acosh')) {
+	function acosh($x) {
+		return 2 * log(sqrt(($x + 1) / 2) + sqrt(($x - 1) / 2));
+	}	//	function acosh()
+}
+
+if (!function_exists('asinh')) {
+	function asinh($x) {
+		return log($x + sqrt(1 + $x * $x));
+	}	//	function asinh()
+}
+
+if (!function_exists('atanh')) {
+	function atanh($x) {
+		return (log(1 + $x) - log(1 - $x)) / 2;
+	}	//	function atanh()
+}
+
+
+//
+//	Strangely, PHP doesn't have a mb_str_replace multibyte function
+//	As we'll only ever use this function with UTF-8 characters, we can simply "hard-code" the character set
+//
+if ((!function_exists('mb_str_replace')) &&
+	(function_exists('mb_substr')) && (function_exists('mb_strlen')) && (function_exists('mb_strpos'))) {
+	function mb_str_replace($search, $replace, $subject) {
+		if(is_array($subject)) {
+			$ret = array();
+			foreach($subject as $key => $val) {
+				$ret[$key] = mb_str_replace($search, $replace, $val);
+			}
+			return $ret;
+		}
+
+		foreach((array) $search as $key => $s) {
+			if($s == '') {
+				continue;
+			}
+			$r = !is_array($replace) ? $replace : (array_key_exists($key, $replace) ? $replace[$key] : '');
+			$pos = mb_strpos($subject, $s, 0, 'UTF-8');
+			while($pos !== false) {
+				$subject = mb_substr($subject, 0, $pos, 'UTF-8') . $r . mb_substr($subject, $pos + mb_strlen($s, 'UTF-8'), 65535, 'UTF-8');
+				$pos = mb_strpos($subject, $s, $pos + mb_strlen($r, 'UTF-8'), 'UTF-8');
+			}
+		}
+		return $subject;
+	}
+}

admin/helpers/PHPExcel/Calculation/Logical.php

@@ -0,0 +1,288 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Calculation_Logical
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Logical {
+
+	/**
+	 * TRUE
+	 *
+	 * Returns the boolean TRUE.
+	 *
+	 * Excel Function:
+	 *		=TRUE()
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @return	boolean		True
+	 */
+	public static function TRUE() {
+		return TRUE;
+	}	//	function TRUE()
+
+
+	/**
+	 * FALSE
+	 *
+	 * Returns the boolean FALSE.
+	 *
+	 * Excel Function:
+	 *		=FALSE()
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @return	boolean		False
+	 */
+	public static function FALSE() {
+		return FALSE;
+	}	//	function FALSE()
+
+
+	/**
+	 * LOGICAL_AND
+	 *
+	 * Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE.
+	 *
+	 * Excel Function:
+	 *		=AND(logical1[,logical2[, ...]])
+	 *
+	 *		The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+	 *			or references that contain logical values.
+	 *
+	 *		Boolean arguments are treated as True or False as appropriate
+	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @param	mixed		$arg,...		Data values
+	 * @return	boolean		The logical AND of the arguments.
+	 */
+	public static function LOGICAL_AND() {
+		// Return value
+		$returnValue = TRUE;
+
+		// Loop through the arguments
+		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
+		$argCount = -1;
+		foreach ($aArgs as $argCount => $arg) {
+			// Is it a boolean value?
+			if (is_bool($arg)) {
+				$returnValue = $returnValue && $arg;
+			} elseif ((is_numeric($arg)) && (!is_string($arg))) {
+				$returnValue = $returnValue && ($arg != 0);
+			} elseif (is_string($arg)) {
+				$arg = strtoupper($arg);
+				if (($arg == 'TRUE') || ($arg == PHPExcel_Calculation::getTRUE())) {
+					$arg = TRUE;
+				} elseif (($arg == 'FALSE') || ($arg == PHPExcel_Calculation::getFALSE())) {
+					$arg = FALSE;
+				} else {
+					return PHPExcel_Calculation_Functions::VALUE();
+				}
+				$returnValue = $returnValue && ($arg != 0);
+			}
+		}
+
+		// Return
+		if ($argCount < 0) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+		return $returnValue;
+	}	//	function LOGICAL_AND()
+
+
+	/**
+	 * LOGICAL_OR
+	 *
+	 * Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.
+	 *
+	 * Excel Function:
+	 *		=OR(logical1[,logical2[, ...]])
+	 *
+	 *		The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
+	 *			or references that contain logical values.
+	 *
+	 *		Boolean arguments are treated as True or False as appropriate
+	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @param	mixed		$arg,...		Data values
+	 * @return	boolean		The logical OR of the arguments.
+	 */
+	public static function LOGICAL_OR() {
+		// Return value
+		$returnValue = FALSE;
+
+		// Loop through the arguments
+		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
+		$argCount = -1;
+		foreach ($aArgs as $argCount => $arg) {
+			// Is it a boolean value?
+			if (is_bool($arg)) {
+				$returnValue = $returnValue || $arg;
+			} elseif ((is_numeric($arg)) && (!is_string($arg))) {
+				$returnValue = $returnValue || ($arg != 0);
+			} elseif (is_string($arg)) {
+				$arg = strtoupper($arg);
+				if (($arg == 'TRUE') || ($arg == PHPExcel_Calculation::getTRUE())) {
+					$arg = TRUE;
+				} elseif (($arg == 'FALSE') || ($arg == PHPExcel_Calculation::getFALSE())) {
+					$arg = FALSE;
+				} else {
+					return PHPExcel_Calculation_Functions::VALUE();
+				}
+				$returnValue = $returnValue || ($arg != 0);
+			}
+		}
+
+		// Return
+		if ($argCount < 0) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+		return $returnValue;
+	}	//	function LOGICAL_OR()
+
+
+	/**
+	 * NOT
+	 *
+	 * Returns the boolean inverse of the argument.
+	 *
+	 * Excel Function:
+	 *		=NOT(logical)
+	 *
+	 *		The argument must evaluate to a logical value such as TRUE or FALSE
+	 *
+	 *		Boolean arguments are treated as True or False as appropriate
+	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
+	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
+	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @param	mixed		$logical	A value or expression that can be evaluated to TRUE or FALSE
+	 * @return	boolean		The boolean inverse of the argument.
+	 */
+	public static function NOT($logical=FALSE) {
+		$logical = PHPExcel_Calculation_Functions::flattenSingleValue($logical);
+		if (is_string($logical)) {
+			$logical = strtoupper($logical);
+			if (($logical == 'TRUE') || ($logical == PHPExcel_Calculation::getTRUE())) {
+				return FALSE;
+			} elseif (($logical == 'FALSE') || ($logical == PHPExcel_Calculation::getFALSE())) {
+				return TRUE;
+			} else {
+				return PHPExcel_Calculation_Functions::VALUE();
+			}
+		}
+
+		return !$logical;
+	}	//	function NOT()
+
+	/**
+	 * STATEMENT_IF
+	 *
+	 * Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE.
+	 *
+	 * Excel Function:
+	 *		=IF(condition[,returnIfTrue[,returnIfFalse]])
+	 *
+	 *		Condition is any value or expression that can be evaluated to TRUE or FALSE.
+	 *			For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100,
+	 *			the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE.
+	 *			This argument can use any comparison calculation operator.
+	 *		ReturnIfTrue is the value that is returned if condition evaluates to TRUE.
+	 *			For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE,
+	 *			then the IF function returns the text "Within budget"
+	 *			If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use
+	 *			the logical value TRUE for this argument.
+	 *			ReturnIfTrue can be another formula.
+	 *		ReturnIfFalse is the value that is returned if condition evaluates to FALSE.
+	 *			For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE,
+	 *			then the IF function returns the text "Over budget".
+	 *			If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned.
+	 *			If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned.
+	 *			ReturnIfFalse can be another formula.
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @param	mixed	$condition		Condition to evaluate
+	 * @param	mixed	$returnIfTrue	Value to return when condition is true
+	 * @param	mixed	$returnIfFalse	Optional value to return when condition is false
+	 * @return	mixed	The value of returnIfTrue or returnIfFalse determined by condition
+	 */
+	public static function STATEMENT_IF($condition = TRUE, $returnIfTrue = 0, $returnIfFalse = FALSE) {
+		$condition		= (is_null($condition))		? TRUE :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($condition);
+		$returnIfTrue	= (is_null($returnIfTrue))	? 0 :		PHPExcel_Calculation_Functions::flattenSingleValue($returnIfTrue);
+		$returnIfFalse	= (is_null($returnIfFalse))	? FALSE :	PHPExcel_Calculation_Functions::flattenSingleValue($returnIfFalse);
+
+		return ($condition) ? $returnIfTrue : $returnIfFalse;
+	}	//	function STATEMENT_IF()
+
+
+	/**
+	 * IFERROR
+	 *
+	 * Excel Function:
+	 *		=IFERROR(testValue,errorpart)
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @param	mixed	$testValue	Value to check, is also the value returned when no error
+	 * @param	mixed	$errorpart	Value to return when testValue is an error condition
+	 * @return	mixed	The value of errorpart or testValue determined by error condition
+	 */
+	public static function IFERROR($testValue = '', $errorpart = '') {
+		$testValue	= (is_null($testValue))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($testValue);
+		$errorpart	= (is_null($errorpart))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($errorpart);
+
+		return self::STATEMENT_IF(PHPExcel_Calculation_Functions::IS_ERROR($testValue), $errorpart, $testValue);
+	}	//	function IFERROR()
+
+}	//	class PHPExcel_Calculation_Logical

admin/helpers/PHPExcel/Calculation/LookupRef.php

@@ -0,0 +1,881 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Calculation_LookupRef
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_LookupRef {
+
+
+	/**
+	 * CELL_ADDRESS
+	 *
+	 * Creates a cell address as text, given specified row and column numbers.
+	 *
+	 * Excel Function:
+	 *		=ADDRESS(row, column, [relativity], [referenceStyle], [sheetText])
+	 *
+	 * @param	row				Row number to use in the cell reference
+	 * @param	column			Column number to use in the cell reference
+	 * @param	relativity		Flag indicating the type of reference to return
+	 *								1 or omitted	Absolute
+	 *								2				Absolute row; relative column
+	 *								3				Relative row; absolute column
+	 *								4				Relative
+	 * @param	referenceStyle	A logical value that specifies the A1 or R1C1 reference style.
+	 *								TRUE or omitted		CELL_ADDRESS returns an A1-style reference
+	 *								FALSE				CELL_ADDRESS returns an R1C1-style reference
+	 * @param	sheetText		Optional Name of worksheet to use
+	 * @return	string
+	 */
+	public static function CELL_ADDRESS($row, $column, $relativity=1, $referenceStyle=True, $sheetText='') {
+		$row		= PHPExcel_Calculation_Functions::flattenSingleValue($row);
+		$column		= PHPExcel_Calculation_Functions::flattenSingleValue($column);
+		$relativity	= PHPExcel_Calculation_Functions::flattenSingleValue($relativity);
+		$sheetText	= PHPExcel_Calculation_Functions::flattenSingleValue($sheetText);
+
+		if (($row < 1) || ($column < 1)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if ($sheetText > '') {
+			if (strpos($sheetText,' ') !== False) { $sheetText = "'".$sheetText."'"; }
+			$sheetText .='!';
+		}
+		if ((!is_bool($referenceStyle)) || $referenceStyle) {
+			$rowRelative = $columnRelative = '$';
+			$column = PHPExcel_Cell::stringFromColumnIndex($column-1);
+			if (($relativity == 2) || ($relativity == 4)) { $columnRelative = ''; }
+			if (($relativity == 3) || ($relativity == 4)) { $rowRelative = ''; }
+			return $sheetText.$columnRelative.$column.$rowRelative.$row;
+		} else {
+			if (($relativity == 2) || ($relativity == 4)) { $column = '['.$column.']'; }
+			if (($relativity == 3) || ($relativity == 4)) { $row = '['.$row.']'; }
+			return $sheetText.'R'.$row.'C'.$column;
+		}
+	}	//	function CELL_ADDRESS()
+
+
+	/**
+	 * COLUMN
+	 *
+	 * Returns the column number of the given cell reference
+	 * If the cell reference is a range of cells, COLUMN returns the column numbers of each column in the reference as a horizontal array.
+	 * If cell reference is omitted, and the function is being called through the calculation engine, then it is assumed to be the
+	 *		reference of the cell in which the COLUMN function appears; otherwise this function returns 0.
+	 *
+	 * Excel Function:
+	 *		=COLUMN([cellAddress])
+	 *
+	 * @param	cellAddress		A reference to a range of cells for which you want the column numbers
+	 * @return	integer or array of integer
+	 */
+	public static function COLUMN($cellAddress=Null) {
+		if (is_null($cellAddress) || trim($cellAddress) === '') { return 0; }
+
+		if (is_array($cellAddress)) {
+			foreach($cellAddress as $columnKey => $value) {
+				$columnKey = preg_replace('/[^a-z]/i','',$columnKey);
+				return (integer) PHPExcel_Cell::columnIndexFromString($columnKey);
+			}
+		} else {
+			if (strpos($cellAddress,'!') !== false) {
+				list($sheet,$cellAddress) = explode('!',$cellAddress);
+			}
+			if (strpos($cellAddress,':') !== false) {
+				list($startAddress,$endAddress) = explode(':',$cellAddress);
+				$startAddress = preg_replace('/[^a-z]/i','',$startAddress);
+				$endAddress = preg_replace('/[^a-z]/i','',$endAddress);
+				$returnValue = array();
+				do {
+					$returnValue[] = (integer) PHPExcel_Cell::columnIndexFromString($startAddress);
+				} while ($startAddress++ != $endAddress);
+				return $returnValue;
+			} else {
+				$cellAddress = preg_replace('/[^a-z]/i','',$cellAddress);
+				return (integer) PHPExcel_Cell::columnIndexFromString($cellAddress);
+			}
+		}
+	}	//	function COLUMN()
+
+
+	/**
+	 * COLUMNS
+	 *
+	 * Returns the number of columns in an array or reference.
+	 *
+	 * Excel Function:
+	 *		=COLUMNS(cellAddress)
+	 *
+	 * @param	cellAddress		An array or array formula, or a reference to a range of cells for which you want the number of columns
+	 * @return	integer			The number of columns in cellAddress
+	 */
+	public static function COLUMNS($cellAddress=Null) {
+		if (is_null($cellAddress) || $cellAddress === '') {
+			return 1;
+		} elseif (!is_array($cellAddress)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		$x = array_keys($cellAddress);
+		$x = array_shift($x);
+		$isMatrix = (is_numeric($x));
+		list($columns,$rows) = PHPExcel_Calculation::_getMatrixDimensions($cellAddress);
+
+		if ($isMatrix) {
+			return $rows;
+		} else {
+			return $columns;
+		}
+	}	//	function COLUMNS()
+
+
+	/**
+	 * ROW
+	 *
+	 * Returns the row number of the given cell reference
+	 * If the cell reference is a range of cells, ROW returns the row numbers of each row in the reference as a vertical array.
+	 * If cell reference is omitted, and the function is being called through the calculation engine, then it is assumed to be the
+	 *		reference of the cell in which the ROW function appears; otherwise this function returns 0.
+	 *
+	 * Excel Function:
+	 *		=ROW([cellAddress])
+	 *
+	 * @param	cellAddress		A reference to a range of cells for which you want the row numbers
+	 * @return	integer or array of integer
+	 */
+	public static function ROW($cellAddress=Null) {
+		if (is_null($cellAddress) || trim($cellAddress) === '') { return 0; }
+
+		if (is_array($cellAddress)) {
+			foreach($cellAddress as $columnKey => $rowValue) {
+				foreach($rowValue as $rowKey => $cellValue) {
+					return (integer) preg_replace('/[^0-9]/i','',$rowKey);
+				}
+			}
+		} else {
+			if (strpos($cellAddress,'!') !== false) {
+				list($sheet,$cellAddress) = explode('!',$cellAddress);
+			}
+			if (strpos($cellAddress,':') !== false) {
+				list($startAddress,$endAddress) = explode(':',$cellAddress);
+				$startAddress = preg_replace('/[^0-9]/','',$startAddress);
+				$endAddress = preg_replace('/[^0-9]/','',$endAddress);
+				$returnValue = array();
+				do {
+					$returnValue[][] = (integer) $startAddress;
+				} while ($startAddress++ != $endAddress);
+				return $returnValue;
+			} else {
+				list($cellAddress) = explode(':',$cellAddress);
+				return (integer) preg_replace('/[^0-9]/','',$cellAddress);
+			}
+		}
+	}	//	function ROW()
+
+
+	/**
+	 * ROWS
+	 *
+	 * Returns the number of rows in an array or reference.
+	 *
+	 * Excel Function:
+	 *		=ROWS(cellAddress)
+	 *
+	 * @param	cellAddress		An array or array formula, or a reference to a range of cells for which you want the number of rows
+	 * @return	integer			The number of rows in cellAddress
+	 */
+	public static function ROWS($cellAddress=Null) {
+		if (is_null($cellAddress) || $cellAddress === '') {
+			return 1;
+		} elseif (!is_array($cellAddress)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		$i = array_keys($cellAddress);
+		$isMatrix = (is_numeric(array_shift($i)));
+		list($columns,$rows) = PHPExcel_Calculation::_getMatrixDimensions($cellAddress);
+
+		if ($isMatrix) {
+			return $columns;
+		} else {
+			return $rows;
+		}
+	}	//	function ROWS()
+
+
+	/**
+	 * HYPERLINK
+	 *
+	 * Excel Function:
+	 *		=HYPERLINK(linkURL,displayName)
+	 *
+	 * @access	public
+	 * @category Logical Functions
+	 * @param	string			$linkURL		Value to check, is also the value returned when no error
+	 * @param	string			$displayName	Value to return when testValue is an error condition
+	 * @param	PHPExcel_Cell	$pCell			The cell to set the hyperlink in
+	 * @return	mixed	The value of $displayName (or $linkURL if $displayName was blank)
+	 */
+	public static function HYPERLINK($linkURL = '', $displayName = null, PHPExcel_Cell $pCell = null) {
+		$args = func_get_args();
+		$pCell = array_pop($args);
+
+		$linkURL		= (is_null($linkURL))		? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($linkURL);
+		$displayName	= (is_null($displayName))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($displayName);
+
+		if ((!is_object($pCell)) || (trim($linkURL) == '')) {
+			return PHPExcel_Calculation_Functions::REF();
+		}
+
+		if ((is_object($displayName)) || trim($displayName) == '') {
+			$displayName = $linkURL;
+		}
+
+		$pCell->getHyperlink()->setUrl($linkURL);
+
+		return $displayName;
+	}	//	function HYPERLINK()
+
+
+	/**
+	 * INDIRECT
+	 *
+	 * Returns the reference specified by a text string.
+	 * References are immediately evaluated to display their contents.
+	 *
+	 * Excel Function:
+	 *		=INDIRECT(cellAddress)
+	 *
+	 * NOTE - INDIRECT() does not yet support the optional a1 parameter introduced in Excel 2010
+	 *
+	 * @param	cellAddress		$cellAddress	The cell address of the current cell (containing this formula)
+	 * @param	PHPExcel_Cell	$pCell			The current cell (containing this formula)
+	 * @return	mixed			The cells referenced by cellAddress
+	 *
+	 * @todo	Support for the optional a1 parameter introduced in Excel 2010
+	 *
+	 */
+	public static function INDIRECT($cellAddress = NULL, PHPExcel_Cell $pCell = NULL) {
+		$cellAddress	= PHPExcel_Calculation_Functions::flattenSingleValue($cellAddress);
+		if (is_null($cellAddress) || $cellAddress === '') {
+			return PHPExcel_Calculation_Functions::REF();
+		}
+
+		$cellAddress1 = $cellAddress;
+		$cellAddress2 = NULL;
+		if (strpos($cellAddress,':') !== false) {
+			list($cellAddress1,$cellAddress2) = explode(':',$cellAddress);
+		}
+
+		if ((!preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_CELLREF.'$/i', $cellAddress1, $matches)) ||
+			((!is_null($cellAddress2)) && (!preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_CELLREF.'$/i', $cellAddress2, $matches)))) {
+			if (!preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_NAMEDRANGE.'$/i', $cellAddress1, $matches)) {
+				return PHPExcel_Calculation_Functions::REF();
+			}
+
+			if (strpos($cellAddress,'!') !== FALSE) {
+				list($sheetName, $cellAddress) = explode('!',$cellAddress);
+				$sheetName = trim($sheetName, "'");
+				$pSheet = $pCell->getWorksheet()->getParent()->getSheetByName($sheetName);
+			} else {
+				$pSheet = $pCell->getWorksheet();
+			}
+
+			return PHPExcel_Calculation::getInstance()->extractNamedRange($cellAddress, $pSheet, FALSE);
+		}
+
+		if (strpos($cellAddress,'!') !== FALSE) {
+			list($sheetName,$cellAddress) = explode('!',$cellAddress);
+			$sheetName = trim($sheetName, "'");
+			$pSheet = $pCell->getWorksheet()->getParent()->getSheetByName($sheetName);
+		} else {
+			$pSheet = $pCell->getWorksheet();
+		}
+
+		return PHPExcel_Calculation::getInstance()->extractCellRange($cellAddress, $pSheet, FALSE);
+	}	//	function INDIRECT()
+
+
+	/**
+	 * OFFSET
+	 *
+	 * Returns a reference to a range that is a specified number of rows and columns from a cell or range of cells.
+	 * The reference that is returned can be a single cell or a range of cells. You can specify the number of rows and
+	 * the number of columns to be returned.
+	 *
+	 * Excel Function:
+	 *		=OFFSET(cellAddress, rows, cols, [height], [width])
+	 *
+	 * @param	cellAddress		The reference from which you want to base the offset. Reference must refer to a cell or
+	 *								range of adjacent cells; otherwise, OFFSET returns the #VALUE! error value.
+	 * @param	rows			The number of rows, up or down, that you want the upper-left cell to refer to.
+	 *								Using 5 as the rows argument specifies that the upper-left cell in the reference is
+	 *								five rows below reference. Rows can be positive (which means below the starting reference)
+	 *								or negative (which means above the starting reference).
+	 * @param	cols			The number of columns, to the left or right, that you want the upper-left cell of the result
+	 *								to refer to. Using 5 as the cols argument specifies that the upper-left cell in the
+	 *								reference is five columns to the right of reference. Cols can be positive (which means
+	 *								to the right of the starting reference) or negative (which means to the left of the
+	 *								starting reference).
+	 * @param	height			The height, in number of rows, that you want the returned reference to be. Height must be a positive number.
+	 * @param	width			The width, in number of columns, that you want the returned reference to be. Width must be a positive number.
+	 * @return	string			A reference to a cell or range of cells
+	 */
+	public static function OFFSET($cellAddress=Null,$rows=0,$columns=0,$height=null,$width=null) {
+		$rows		= PHPExcel_Calculation_Functions::flattenSingleValue($rows);
+		$columns	= PHPExcel_Calculation_Functions::flattenSingleValue($columns);
+		$height		= PHPExcel_Calculation_Functions::flattenSingleValue($height);
+		$width		= PHPExcel_Calculation_Functions::flattenSingleValue($width);
+		if ($cellAddress == Null) {
+			return 0;
+		}
+
+		$args = func_get_args();
+		$pCell = array_pop($args);
+		if (!is_object($pCell)) {
+			return PHPExcel_Calculation_Functions::REF();
+		}
+
+		$sheetName = NULL;
+		if (strpos($cellAddress,"!")) {
+			list($sheetName,$cellAddress) = explode("!",$cellAddress);
+			$sheetName = trim($sheetName, "'");
+		}
+		if (strpos($cellAddress,":")) {
+			list($startCell,$endCell) = explode(":",$cellAddress);
+		} else {
+			$startCell = $endCell = $cellAddress;
+		}
+		list($startCellColumn,$startCellRow) = PHPExcel_Cell::coordinateFromString($startCell);
+		list($endCellColumn,$endCellRow) = PHPExcel_Cell::coordinateFromString($endCell);
+
+		$startCellRow += $rows;
+		$startCellColumn = PHPExcel_Cell::columnIndexFromString($startCellColumn) - 1;
+		$startCellColumn += $columns;
+
+		if (($startCellRow <= 0) || ($startCellColumn < 0)) {
+			return PHPExcel_Calculation_Functions::REF();
+		}
+		$endCellColumn = PHPExcel_Cell::columnIndexFromString($endCellColumn) - 1;
+		if (($width != null) && (!is_object($width))) {
+			$endCellColumn = $startCellColumn + $width - 1;
+		} else {
+			$endCellColumn += $columns;
+		}
+		$startCellColumn = PHPExcel_Cell::stringFromColumnIndex($startCellColumn);
+
+		if (($height != null) && (!is_object($height))) {
+			$endCellRow = $startCellRow + $height - 1;
+		} else {
+			$endCellRow += $rows;
+		}
+
+		if (($endCellRow <= 0) || ($endCellColumn < 0)) {
+			return PHPExcel_Calculation_Functions::REF();
+		}
+		$endCellColumn = PHPExcel_Cell::stringFromColumnIndex($endCellColumn);
+
+		$cellAddress = $startCellColumn.$startCellRow;
+		if (($startCellColumn != $endCellColumn) || ($startCellRow != $endCellRow)) {
+			$cellAddress .= ':'.$endCellColumn.$endCellRow;
+		}
+
+		if ($sheetName !== NULL) {
+			$pSheet = $pCell->getWorksheet()->getParent()->getSheetByName($sheetName);
+		} else {
+			$pSheet = $pCell->getWorksheet();
+		}
+
+		return PHPExcel_Calculation::getInstance()->extractCellRange($cellAddress, $pSheet, False);
+	}	//	function OFFSET()
+
+
+	/**
+	 * CHOOSE
+	 *
+	 * Uses lookup_value to return a value from the list of value arguments.
+	 * Use CHOOSE to select one of up to 254 values based on the lookup_value.
+	 *
+	 * Excel Function:
+	 *		=CHOOSE(index_num, value1, [value2], ...)
+	 *
+	 * @param	index_num		Specifies which value argument is selected.
+	 *							Index_num must be a number between 1 and 254, or a formula or reference to a cell containing a number
+	 *								between 1 and 254.
+	 * @param	value1...		Value1 is required, subsequent values are optional.
+	 *							Between 1 to 254 value arguments from which CHOOSE selects a value or an action to perform based on
+	 *								index_num. The arguments can be numbers, cell references, defined names, formulas, functions, or
+	 *								text.
+	 * @return	mixed			The selected value
+	 */
+	public static function CHOOSE() {
+		$chooseArgs = func_get_args();
+		$chosenEntry = PHPExcel_Calculation_Functions::flattenArray(array_shift($chooseArgs));
+		$entryCount = count($chooseArgs) - 1;
+
+		if(is_array($chosenEntry)) {
+			$chosenEntry = array_shift($chosenEntry);
+		}
+		if ((is_numeric($chosenEntry)) && (!is_bool($chosenEntry))) {
+			--$chosenEntry;
+		} else {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+		$chosenEntry = floor($chosenEntry);
+		if (($chosenEntry < 0) || ($chosenEntry > $entryCount)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if (is_array($chooseArgs[$chosenEntry])) {
+			return PHPExcel_Calculation_Functions::flattenArray($chooseArgs[$chosenEntry]);
+		} else {
+			return $chooseArgs[$chosenEntry];
+		}
+	}	//	function CHOOSE()
+
+
+	/**
+	 * MATCH
+	 *
+	 * The MATCH function searches for a specified item in a range of cells
+	 *
+	 * Excel Function:
+	 *		=MATCH(lookup_value, lookup_array, [match_type])
+	 *
+	 * @param	lookup_value	The value that you want to match in lookup_array
+	 * @param	lookup_array	The range of cells being searched
+	 * @param	match_type		The number -1, 0, or 1. -1 means above, 0 means exact match, 1 means below. If match_type is 1 or -1, the list has to be ordered.
+	 * @return	integer			The relative position of the found item
+	 */
+	public static function MATCH($lookup_value, $lookup_array, $match_type=1) {
+		$lookup_array = PHPExcel_Calculation_Functions::flattenArray($lookup_array);
+		$lookup_value = PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);
+		$match_type	= (is_null($match_type)) ? 1 : (int) PHPExcel_Calculation_Functions::flattenSingleValue($match_type);
+		//	MATCH is not case sensitive
+		$lookup_value = strtolower($lookup_value);
+
+		//	lookup_value type has to be number, text, or logical values
+		if ((!is_numeric($lookup_value)) && (!is_string($lookup_value)) && (!is_bool($lookup_value))) {
+			return PHPExcel_Calculation_Functions::NA();
+		}
+
+		//	match_type is 0, 1 or -1
+		if (($match_type !== 0) && ($match_type !== -1) && ($match_type !== 1)) {
+			return PHPExcel_Calculation_Functions::NA();
+		}
+
+		//	lookup_array should not be empty
+		$lookupArraySize = count($lookup_array);
+		if ($lookupArraySize <= 0) {
+			return PHPExcel_Calculation_Functions::NA();
+		}
+
+		//	lookup_array should contain only number, text, or logical values, or empty (null) cells
+		foreach($lookup_array as $i => $lookupArrayValue) {
+			//	check the type of the value
+			if ((!is_numeric($lookupArrayValue)) && (!is_string($lookupArrayValue)) &&
+				(!is_bool($lookupArrayValue)) && (!is_null($lookupArrayValue))) {
+				return PHPExcel_Calculation_Functions::NA();
+			}
+			//	convert strings to lowercase for case-insensitive testing
+			if (is_string($lookupArrayValue)) {
+				$lookup_array[$i] = strtolower($lookupArrayValue);
+			}
+			if ((is_null($lookupArrayValue)) && (($match_type == 1) || ($match_type == -1))) {
+				$lookup_array = array_slice($lookup_array,0,$i-1);
+			}
+		}
+
+		// if match_type is 1 or -1, the list has to be ordered
+		if ($match_type == 1) {
+			asort($lookup_array);
+			$keySet = array_keys($lookup_array);
+		} elseif($match_type == -1) {
+			arsort($lookup_array);
+			$keySet = array_keys($lookup_array);
+		}
+
+		// **
+		// find the match
+		// **
+		// loop on the cells
+//		var_dump($lookup_array);
+//		echo '<br />';
+		foreach($lookup_array as $i => $lookupArrayValue) {
+			if (($match_type == 0) && ($lookupArrayValue == $lookup_value)) {
+				//	exact match
+				return ++$i;
+			} elseif (($match_type == -1) && ($lookupArrayValue <= $lookup_value)) {
+//				echo '$i = '.$i.' => ';
+//				var_dump($lookupArrayValue);
+//				echo '<br />';
+//				echo 'Keyset = ';
+//				var_dump($keySet);
+//				echo '<br />';
+				$i = array_search($i,$keySet);
+//				echo '$i='.$i.'<br />';
+				// if match_type is -1 <=> find the smallest value that is greater than or equal to lookup_value
+				if ($i < 1){
+					// 1st cell was allready smaller than the lookup_value
+					break;
+				} else {
+					// the previous cell was the match
+					return $keySet[$i-1]+1;
+				}
+			} elseif (($match_type == 1) && ($lookupArrayValue >= $lookup_value)) {
+//				echo '$i = '.$i.' => ';
+//				var_dump($lookupArrayValue);
+//				echo '<br />';
+//				echo 'Keyset = ';
+//				var_dump($keySet);
+//				echo '<br />';
+				$i = array_search($i,$keySet);
+//				echo '$i='.$i.'<br />';
+				// if match_type is 1 <=> find the largest value that is less than or equal to lookup_value
+				if ($i < 1){
+					// 1st cell was allready bigger than the lookup_value
+					break;
+				} else {
+					// the previous cell was the match
+					return $keySet[$i-1]+1;
+				}
+			}
+		}
+
+		//	unsuccessful in finding a match, return #N/A error value
+		return PHPExcel_Calculation_Functions::NA();
+	}	//	function MATCH()
+
+
+	/**
+	 * INDEX
+	 *
+	 * Uses an index to choose a value from a reference or array
+	 *
+	 * Excel Function:
+	 *		=INDEX(range_array, row_num, [column_num])
+	 *
+	 * @param	range_array		A range of cells or an array constant
+	 * @param	row_num			The row in array from which to return a value. If row_num is omitted, column_num is required.
+	 * @param	column_num		The column in array from which to return a value. If column_num is omitted, row_num is required.
+	 * @return	mixed			the value of a specified cell or array of cells
+	 */
+	public static function INDEX($arrayValues,$rowNum = 0,$columnNum = 0) {
+
+		if (($rowNum < 0) || ($columnNum < 0)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if (!is_array($arrayValues)) {
+			return PHPExcel_Calculation_Functions::REF();
+		}
+
+		$rowKeys = array_keys($arrayValues);
+		$columnKeys = @array_keys($arrayValues[$rowKeys[0]]);
+
+		if ($columnNum > count($columnKeys)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		} elseif ($columnNum == 0) {
+			if ($rowNum == 0) {
+				return $arrayValues;
+			}
+			$rowNum = $rowKeys[--$rowNum];
+			$returnArray = array();
+			foreach($arrayValues as $arrayColumn) {
+				if (is_array($arrayColumn)) {
+					if (isset($arrayColumn[$rowNum])) {
+						$returnArray[] = $arrayColumn[$rowNum];
+					} else {
+						return $arrayValues[$rowNum];
+					}
+				} else {
+					return $arrayValues[$rowNum];
+				}
+			}
+			return $returnArray;
+		}
+		$columnNum = $columnKeys[--$columnNum];
+		if ($rowNum > count($rowKeys)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		} elseif ($rowNum == 0) {
+			return $arrayValues[$columnNum];
+		}
+		$rowNum = $rowKeys[--$rowNum];
+
+		return $arrayValues[$rowNum][$columnNum];
+	}	//	function INDEX()
+
+
+	/**
+	 * TRANSPOSE
+	 *
+	 * @param	array	$matrixData	A matrix of values
+	 * @return	array
+	 *
+	 * Unlike the Excel TRANSPOSE function, which will only work on a single row or column, this function will transpose a full matrix.
+	 */
+	public static function TRANSPOSE($matrixData) {
+		$returnMatrix = array();
+		if (!is_array($matrixData)) { $matrixData = array(array($matrixData)); }
+
+		$column = 0;
+		foreach($matrixData as $matrixRow) {
+			$row = 0;
+			foreach($matrixRow as $matrixCell) {
+				$returnMatrix[$row][$column] = $matrixCell;
+				++$row;
+			}
+			++$column;
+		}
+		return $returnMatrix;
+	}	//	function TRANSPOSE()
+
+
+	private static function _vlookupSort($a,$b) {
+		$f = array_keys($a);
+		$firstColumn = array_shift($f);
+		if (strtolower($a[$firstColumn]) == strtolower($b[$firstColumn])) {
+			return 0;
+		}
+		return (strtolower($a[$firstColumn]) < strtolower($b[$firstColumn])) ? -1 : 1;
+	}	//	function _vlookupSort()
+
+
+	/**
+	* VLOOKUP
+	* The VLOOKUP function searches for value in the left-most column of lookup_array and returns the value in the same row based on the index_number.
+	* @param	lookup_value	The value that you want to match in lookup_array
+	* @param	lookup_array	The range of cells being searched
+	* @param	index_number	The column number in table_array from which the matching value must be returned. The first column is 1.
+	* @param	not_exact_match	Determines if you are looking for an exact match based on lookup_value.
+	* @return	mixed			The value of the found cell
+	*/
+	public static function VLOOKUP($lookup_value, $lookup_array, $index_number, $not_exact_match=true) {
+		$lookup_value	= PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);
+		$index_number	= PHPExcel_Calculation_Functions::flattenSingleValue($index_number);
+		$not_exact_match	= PHPExcel_Calculation_Functions::flattenSingleValue($not_exact_match);
+
+		// index_number must be greater than or equal to 1
+		if ($index_number < 1) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		// index_number must be less than or equal to the number of columns in lookup_array
+		if ((!is_array($lookup_array)) || (empty($lookup_array))) {
+			return PHPExcel_Calculation_Functions::REF();
+		} else {
+			$f = array_keys($lookup_array);
+			$firstRow = array_pop($f);
+			if ((!is_array($lookup_array[$firstRow])) || ($index_number > count($lookup_array[$firstRow]))) {
+				return PHPExcel_Calculation_Functions::REF();
+			} else {
+				$columnKeys = array_keys($lookup_array[$firstRow]);
+				$returnColumn = $columnKeys[--$index_number];
+				$firstColumn = array_shift($columnKeys);
+			}
+		}
+
+		if (!$not_exact_match) {
+			uasort($lookup_array,array('self','_vlookupSort'));
+		}
+
+		$rowNumber = $rowValue = False;
+		foreach($lookup_array as $rowKey => $rowData) {
+			if ((is_numeric($lookup_value) && is_numeric($rowData[$firstColumn]) && ($rowData[$firstColumn] > $lookup_value)) ||
+				(!is_numeric($lookup_value) && !is_numeric($rowData[$firstColumn]) && (strtolower($rowData[$firstColumn]) > strtolower($lookup_value)))) {
+				break;
+			}
+			$rowNumber = $rowKey;
+			$rowValue = $rowData[$firstColumn];
+		}
+
+		if ($rowNumber !== false) {
+			if ((!$not_exact_match) && ($rowValue != $lookup_value)) {
+				//	if an exact match is required, we have what we need to return an appropriate response
+				return PHPExcel_Calculation_Functions::NA();
+			} else {
+				//	otherwise return the appropriate value
+				$result = $lookup_array[$rowNumber][$returnColumn];
+				if ((is_numeric($lookup_value) && is_numeric($result)) ||
+					(!is_numeric($lookup_value) && !is_numeric($result))) {
+					return $result;
+				}
+			}
+		}
+
+		return PHPExcel_Calculation_Functions::NA();
+	}	//	function VLOOKUP()
+
+
+/**
+    * HLOOKUP
+    * The HLOOKUP function searches for value in the top-most row of lookup_array and returns the value in the same column based on the index_number.
+    * @param    lookup_value    The value that you want to match in lookup_array
+    * @param    lookup_array    The range of cells being searched
+    * @param    index_number    The row number in table_array from which the matching value must be returned. The first row is 1.
+    * @param    not_exact_match Determines if you are looking for an exact match based on lookup_value.
+    * @return   mixed           The value of the found cell
+    */
+    public static function HLOOKUP($lookup_value, $lookup_array, $index_number, $not_exact_match=true) {
+        $lookup_value   = PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);
+        $index_number   = PHPExcel_Calculation_Functions::flattenSingleValue($index_number);
+        $not_exact_match    = PHPExcel_Calculation_Functions::flattenSingleValue($not_exact_match);
+
+        // index_number must be greater than or equal to 1
+        if ($index_number < 1) {
+            return PHPExcel_Calculation_Functions::VALUE();
+        }
+
+        // index_number must be less than or equal to the number of columns in lookup_array
+        if ((!is_array($lookup_array)) || (empty($lookup_array))) {
+            return PHPExcel_Calculation_Functions::REF();
+        } else {
+            $f = array_keys($lookup_array);
+            $firstRow = array_pop($f);
+            if ((!is_array($lookup_array[$firstRow])) || ($index_number > count($lookup_array[$firstRow]))) {
+                return PHPExcel_Calculation_Functions::REF();
+            } else {
+                $columnKeys = array_keys($lookup_array[$firstRow]);
+                                $firstkey = $f[0] - 1;
+                $returnColumn = $firstkey + $index_number;
+                $firstColumn = array_shift($f);
+            }
+        }
+
+        if (!$not_exact_match) {
+            $firstRowH = asort($lookup_array[$firstColumn]);
+        }
+
+        $rowNumber = $rowValue = False;
+        foreach($lookup_array[$firstColumn] as $rowKey => $rowData) {
+			if ((is_numeric($lookup_value) && is_numeric($rowData) && ($rowData > $lookup_value)) ||
+				(!is_numeric($lookup_value) && !is_numeric($rowData) && (strtolower($rowData) > strtolower($lookup_value)))) {
+                break;
+            }
+            $rowNumber = $rowKey;
+            $rowValue = $rowData;
+        }
+
+        if ($rowNumber !== false) {
+            if ((!$not_exact_match) && ($rowValue != $lookup_value)) {
+                //  if an exact match is required, we have what we need to return an appropriate response
+                return PHPExcel_Calculation_Functions::NA();
+            } else {
+                //  otherwise return the appropriate value
+                $result = $lookup_array[$returnColumn][$rowNumber];
+				return $result;
+            }
+        }
+
+        return PHPExcel_Calculation_Functions::NA();
+    }   //  function HLOOKUP()
+
+
+	/**
+	 * LOOKUP
+	 * The LOOKUP function searches for value either from a one-row or one-column range or from an array.
+	 * @param	lookup_value	The value that you want to match in lookup_array
+	 * @param	lookup_vector	The range of cells being searched
+	 * @param	result_vector	The column from which the matching value must be returned
+	 * @return	mixed			The value of the found cell
+	 */
+	public static function LOOKUP($lookup_value, $lookup_vector, $result_vector=null) {
+		$lookup_value	= PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);
+
+		if (!is_array($lookup_vector)) {
+			return PHPExcel_Calculation_Functions::NA();
+		}
+		$lookupRows = count($lookup_vector);
+		$l = array_keys($lookup_vector);
+		$l = array_shift($l);
+		$lookupColumns = count($lookup_vector[$l]);
+		if ((($lookupRows == 1) && ($lookupColumns > 1)) || (($lookupRows == 2) && ($lookupColumns != 2))) {
+			$lookup_vector = self::TRANSPOSE($lookup_vector);
+			$lookupRows = count($lookup_vector);
+			$l = array_keys($lookup_vector);
+			$lookupColumns = count($lookup_vector[array_shift($l)]);
+		}
+
+		if (is_null($result_vector)) {
+			$result_vector = $lookup_vector;
+		}
+		$resultRows = count($result_vector);
+		$l = array_keys($result_vector);
+		$l = array_shift($l);
+		$resultColumns = count($result_vector[$l]);
+		if ((($resultRows == 1) && ($resultColumns > 1)) || (($resultRows == 2) && ($resultColumns != 2))) {
+			$result_vector = self::TRANSPOSE($result_vector);
+			$resultRows = count($result_vector);
+			$r = array_keys($result_vector);
+			$resultColumns = count($result_vector[array_shift($r)]);
+		}
+
+		if ($lookupRows == 2) {
+			$result_vector = array_pop($lookup_vector);
+			$lookup_vector = array_shift($lookup_vector);
+		}
+		if ($lookupColumns != 2) {
+			foreach($lookup_vector as &$value) {
+				if (is_array($value)) {
+					$k = array_keys($value);
+					$key1 = $key2 = array_shift($k);
+					$key2++;
+					$dataValue1 = $value[$key1];
+				} else {
+					$key1 = 0;
+					$key2 = 1;
+					$dataValue1 = $value;
+				}
+				$dataValue2 = array_shift($result_vector);
+				if (is_array($dataValue2)) {
+					$dataValue2 = array_shift($dataValue2);
+				}
+				$value = array($key1 => $dataValue1, $key2 => $dataValue2);
+			}
+			unset($value);
+		}
+
+		return self::VLOOKUP($lookup_value,$lookup_vector,2);
+ 	}	//	function LOOKUP()
+
+}	//	class PHPExcel_Calculation_LookupRef

admin/helpers/PHPExcel/Calculation/TextData.php

@@ -0,0 +1,631 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Calculation_TextData
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_TextData {
+
+	private static $_invalidChars = Null;
+
+	private static function _uniord($c) {
+		if (ord($c{0}) >=0 && ord($c{0}) <= 127)
+			return ord($c{0});
+		if (ord($c{0}) >= 192 && ord($c{0}) <= 223)
+			return (ord($c{0})-192)*64 + (ord($c{1})-128);
+		if (ord($c{0}) >= 224 && ord($c{0}) <= 239)
+			return (ord($c{0})-224)*4096 + (ord($c{1})-128)*64 + (ord($c{2})-128);
+		if (ord($c{0}) >= 240 && ord($c{0}) <= 247)
+			return (ord($c{0})-240)*262144 + (ord($c{1})-128)*4096 + (ord($c{2})-128)*64 + (ord($c{3})-128);
+		if (ord($c{0}) >= 248 && ord($c{0}) <= 251)
+			return (ord($c{0})-248)*16777216 + (ord($c{1})-128)*262144 + (ord($c{2})-128)*4096 + (ord($c{3})-128)*64 + (ord($c{4})-128);
+		if (ord($c{0}) >= 252 && ord($c{0}) <= 253)
+			return (ord($c{0})-252)*1073741824 + (ord($c{1})-128)*16777216 + (ord($c{2})-128)*262144 + (ord($c{3})-128)*4096 + (ord($c{4})-128)*64 + (ord($c{5})-128);
+		if (ord($c{0}) >= 254 && ord($c{0}) <= 255) //error
+			return PHPExcel_Calculation_Functions::VALUE();
+		return 0;
+	}	//	function _uniord()
+
+	/**
+	 * CHARACTER
+	 *
+	 * @param	string	$character	Value
+	 * @return	int
+	 */
+	public static function CHARACTER($character) {
+		$character	= PHPExcel_Calculation_Functions::flattenSingleValue($character);
+
+		if ((!is_numeric($character)) || ($character < 0)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if (function_exists('mb_convert_encoding')) {
+			return mb_convert_encoding('&#'.intval($character).';', 'UTF-8', 'HTML-ENTITIES');
+		} else {
+			return chr(intval($character));
+		}
+	}
+
+
+	/**
+	 * TRIMNONPRINTABLE
+	 *
+	 * @param	mixed	$stringValue	Value to check
+	 * @return	string
+	 */
+	public static function TRIMNONPRINTABLE($stringValue = '') {
+		$stringValue	= PHPExcel_Calculation_Functions::flattenSingleValue($stringValue);
+
+		if (is_bool($stringValue)) {
+			return ($stringValue) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		if (self::$_invalidChars == Null) {
+			self::$_invalidChars = range(chr(0),chr(31));
+		}
+
+		if (is_string($stringValue) || is_numeric($stringValue)) {
+			return str_replace(self::$_invalidChars, '', trim($stringValue, "\x00..\x1F"));
+		}
+		return NULL;
+	}	//	function TRIMNONPRINTABLE()
+
+
+	/**
+	 * TRIMSPACES
+	 *
+	 * @param	mixed	$stringValue	Value to check
+	 * @return	string
+	 */
+	public static function TRIMSPACES($stringValue = '') {
+		$stringValue	= PHPExcel_Calculation_Functions::flattenSingleValue($stringValue);
+
+		if (is_bool($stringValue)) {
+			return ($stringValue) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		if (is_string($stringValue) || is_numeric($stringValue)) {
+			return trim(preg_replace('/ +/',' ',trim($stringValue,' ')));
+		}
+		return NULL;
+	}	//	function TRIMSPACES()
+
+
+	/**
+	 * ASCIICODE
+	 *
+	 * @param	string	$characters		Value
+	 * @return	int
+	 */
+	public static function ASCIICODE($characters) {
+		if (($characters === NULL) || ($characters === ''))
+			return PHPExcel_Calculation_Functions::VALUE();
+		$characters	= PHPExcel_Calculation_Functions::flattenSingleValue($characters);
+		if (is_bool($characters)) {
+			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {
+				$characters = (int) $characters;
+			} else {
+				$characters = ($characters) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+			}
+		}
+
+		$character = $characters;
+		if ((function_exists('mb_strlen')) && (function_exists('mb_substr'))) {
+			if (mb_strlen($characters, 'UTF-8') > 1) { $character = mb_substr($characters, 0, 1, 'UTF-8'); }
+			return self::_uniord($character);
+		} else {
+			if (strlen($characters) > 0) { $character = substr($characters, 0, 1); }
+			return ord($character);
+		}
+	}	//	function ASCIICODE()
+
+
+	/**
+	 * CONCATENATE
+	 *
+	 * @return	string
+	 */
+	public static function CONCATENATE() {
+		// Return value
+		$returnValue = '';
+
+		// Loop through arguments
+		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());
+		foreach ($aArgs as $arg) {
+			if (is_bool($arg)) {
+				if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {
+					$arg = (int) $arg;
+				} else {
+					$arg = ($arg) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+				}
+			}
+			$returnValue .= $arg;
+		}
+
+		// Return
+		return $returnValue;
+	}	//	function CONCATENATE()
+
+
+	/**
+	 * DOLLAR
+	 *
+	 * This function converts a number to text using currency format, with the decimals rounded to the specified place.
+	 * The format used is $#,##0.00_);($#,##0.00)..
+	 *
+	 * @param	float	$value			The value to format
+	 * @param	int		$decimals		The number of digits to display to the right of the decimal point.
+	 *									If decimals is negative, number is rounded to the left of the decimal point.
+	 *									If you omit decimals, it is assumed to be 2
+	 * @return	string
+	 */
+	public static function DOLLAR($value = 0, $decimals = 2) {
+		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+		$decimals	= is_null($decimals) ? 0 : PHPExcel_Calculation_Functions::flattenSingleValue($decimals);
+
+		// Validate parameters
+		if (!is_numeric($value) || !is_numeric($decimals)) {
+			return PHPExcel_Calculation_Functions::NaN();
+		}
+		$decimals = floor($decimals);
+
+		$mask = '$#,##0';
+		if ($decimals > 0) {
+			$mask .= '.' . str_repeat('0',$decimals);
+		} else {
+			$round = pow(10,abs($decimals));
+			if ($value < 0) { $round = 0-$round; }
+			$value = PHPExcel_Calculation_MathTrig::MROUND($value, $round);
+		}
+
+		return PHPExcel_Style_NumberFormat::toFormattedString($value, $mask);
+
+	}	//	function DOLLAR()
+
+
+	/**
+	 * SEARCHSENSITIVE
+	 *
+	 * @param	string	$needle		The string to look for
+	 * @param	string	$haystack	The string in which to look
+	 * @param	int		$offset		Offset within $haystack
+	 * @return	string
+	 */
+	public static function SEARCHSENSITIVE($needle,$haystack,$offset=1) {
+		$needle		= PHPExcel_Calculation_Functions::flattenSingleValue($needle);
+		$haystack	= PHPExcel_Calculation_Functions::flattenSingleValue($haystack);
+		$offset		= PHPExcel_Calculation_Functions::flattenSingleValue($offset);
+
+		if (!is_bool($needle)) {
+			if (is_bool($haystack)) {
+				$haystack = ($haystack) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+			}
+
+			if (($offset > 0) && (PHPExcel_Shared_String::CountCharacters($haystack) > $offset)) {
+				if (PHPExcel_Shared_String::CountCharacters($needle) == 0) {
+					return $offset;
+				}
+				if (function_exists('mb_strpos')) {
+					$pos = mb_strpos($haystack, $needle, --$offset, 'UTF-8');
+				} else {
+					$pos = strpos($haystack, $needle, --$offset);
+				}
+				if ($pos !== false) {
+					return ++$pos;
+				}
+			}
+		}
+		return PHPExcel_Calculation_Functions::VALUE();
+	}	//	function SEARCHSENSITIVE()
+
+
+	/**
+	 * SEARCHINSENSITIVE
+	 *
+	 * @param	string	$needle		The string to look for
+	 * @param	string	$haystack	The string in which to look
+	 * @param	int		$offset		Offset within $haystack
+	 * @return	string
+	 */
+	public static function SEARCHINSENSITIVE($needle,$haystack,$offset=1) {
+		$needle		= PHPExcel_Calculation_Functions::flattenSingleValue($needle);
+		$haystack	= PHPExcel_Calculation_Functions::flattenSingleValue($haystack);
+		$offset		= PHPExcel_Calculation_Functions::flattenSingleValue($offset);
+
+		if (!is_bool($needle)) {
+			if (is_bool($haystack)) {
+				$haystack = ($haystack) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+			}
+
+			if (($offset > 0) && (PHPExcel_Shared_String::CountCharacters($haystack) > $offset)) {
+				if (PHPExcel_Shared_String::CountCharacters($needle) == 0) {
+					return $offset;
+				}
+				if (function_exists('mb_stripos')) {
+					$pos = mb_stripos($haystack, $needle, --$offset,'UTF-8');
+				} else {
+					$pos = stripos($haystack, $needle, --$offset);
+				}
+				if ($pos !== false) {
+					return ++$pos;
+				}
+			}
+		}
+		return PHPExcel_Calculation_Functions::VALUE();
+	}	//	function SEARCHINSENSITIVE()
+
+
+	/**
+	 * FIXEDFORMAT
+	 *
+	 * @param	mixed		$value	Value to check
+	 * @param	integer		$decimals
+	 * @param	boolean		$no_commas
+	 * @return	boolean
+	 */
+	public static function FIXEDFORMAT($value, $decimals = 2, $no_commas = FALSE) {
+		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+		$decimals	= PHPExcel_Calculation_Functions::flattenSingleValue($decimals);
+		$no_commas	= PHPExcel_Calculation_Functions::flattenSingleValue($no_commas);
+
+		// Validate parameters
+		if (!is_numeric($value) || !is_numeric($decimals)) {
+			return PHPExcel_Calculation_Functions::NaN();
+		}
+		$decimals = floor($decimals);
+
+		$valueResult = round($value,$decimals);
+		if ($decimals < 0) { $decimals = 0; }
+		if (!$no_commas) {
+			$valueResult = number_format($valueResult,$decimals);
+		}
+
+		return (string) $valueResult;
+	}	//	function FIXEDFORMAT()
+
+
+	/**
+	 * LEFT
+	 *
+	 * @param	string	$value	Value
+	 * @param	int		$chars	Number of characters
+	 * @return	string
+	 */
+	public static function LEFT($value = '', $chars = 1) {
+		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);
+
+		if ($chars < 0) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if (is_bool($value)) {
+			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		if (function_exists('mb_substr')) {
+			return mb_substr($value, 0, $chars, 'UTF-8');
+		} else {
+			return substr($value, 0, $chars);
+		}
+	}	//	function LEFT()
+
+
+	/**
+	 * MID
+	 *
+	 * @param	string	$value	Value
+	 * @param	int		$start	Start character
+	 * @param	int		$chars	Number of characters
+	 * @return	string
+	 */
+	public static function MID($value = '', $start = 1, $chars = null) {
+		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+		$start		= PHPExcel_Calculation_Functions::flattenSingleValue($start);
+		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);
+
+		if (($start < 1) || ($chars < 0)) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if (is_bool($value)) {
+			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		if (function_exists('mb_substr')) {
+			return mb_substr($value, --$start, $chars, 'UTF-8');
+		} else {
+			return substr($value, --$start, $chars);
+		}
+	}	//	function MID()
+
+
+	/**
+	 * RIGHT
+	 *
+	 * @param	string	$value	Value
+	 * @param	int		$chars	Number of characters
+	 * @return	string
+	 */
+	public static function RIGHT($value = '', $chars = 1) {
+		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);
+
+		if ($chars < 0) {
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+
+		if (is_bool($value)) {
+			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		if ((function_exists('mb_substr')) && (function_exists('mb_strlen'))) {
+			return mb_substr($value, mb_strlen($value, 'UTF-8') - $chars, $chars, 'UTF-8');
+		} else {
+			return substr($value, strlen($value) - $chars);
+		}
+	}	//	function RIGHT()
+
+
+	/**
+	 * STRINGLENGTH
+	 *
+	 * @param	string	$value	Value
+	 * @return	string
+	 */
+	public static function STRINGLENGTH($value = '') {
+		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+
+		if (is_bool($value)) {
+			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		if (function_exists('mb_strlen')) {
+			return mb_strlen($value, 'UTF-8');
+		} else {
+			return strlen($value);
+		}
+	}	//	function STRINGLENGTH()
+
+
+	/**
+	 * LOWERCASE
+	 *
+	 * Converts a string value to upper case.
+	 *
+	 * @param	string		$mixedCaseString
+	 * @return	string
+	 */
+	public static function LOWERCASE($mixedCaseString) {
+		$mixedCaseString	= PHPExcel_Calculation_Functions::flattenSingleValue($mixedCaseString);
+
+		if (is_bool($mixedCaseString)) {
+			$mixedCaseString = ($mixedCaseString) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		return PHPExcel_Shared_String::StrToLower($mixedCaseString);
+	}	//	function LOWERCASE()
+
+
+	/**
+	 * UPPERCASE
+	 *
+	 * Converts a string value to upper case.
+	 *
+	 * @param	string		$mixedCaseString
+	 * @return	string
+	 */
+	public static function UPPERCASE($mixedCaseString) {
+		$mixedCaseString	= PHPExcel_Calculation_Functions::flattenSingleValue($mixedCaseString);
+
+		if (is_bool($mixedCaseString)) {
+			$mixedCaseString = ($mixedCaseString) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		return PHPExcel_Shared_String::StrToUpper($mixedCaseString);
+	}	//	function UPPERCASE()
+
+
+	/**
+	 * PROPERCASE
+	 *
+	 * Converts a string value to upper case.
+	 *
+	 * @param	string		$mixedCaseString
+	 * @return	string
+	 */
+	public static function PROPERCASE($mixedCaseString) {
+		$mixedCaseString	= PHPExcel_Calculation_Functions::flattenSingleValue($mixedCaseString);
+
+		if (is_bool($mixedCaseString)) {
+			$mixedCaseString = ($mixedCaseString) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
+		}
+
+		return PHPExcel_Shared_String::StrToTitle($mixedCaseString);
+	}	//	function PROPERCASE()
+
+
+	/**
+	 * REPLACE
+	 *
+	 * @param	string	$oldText	String to modify
+	 * @param	int		$start		Start character
+	 * @param	int		$chars		Number of characters
+	 * @param	string	$newText	String to replace in defined position 
+	 * @return	string
+	 */
+	public static function REPLACE($oldText = '', $start = 1, $chars = null, $newText) {
+		$oldText	= PHPExcel_Calculation_Functions::flattenSingleValue($oldText);
+		$start		= PHPExcel_Calculation_Functions::flattenSingleValue($start);
+		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);
+		$newText	= PHPExcel_Calculation_Functions::flattenSingleValue($newText);
+
+		$left = self::LEFT($oldText,$start-1);
+		$right = self::RIGHT($oldText,self::STRINGLENGTH($oldText)-($start+$chars)+1);
+
+		return $left.$newText.$right;
+	}	//	function REPLACE()
+
+
+	/**
+	 * SUBSTITUTE
+	 *
+	 * @param	string	$text		Value
+	 * @param	string	$fromText	From Value
+	 * @param	string	$toText		To Value
+	 * @param	integer	$instance	Instance Number
+	 * @return	string
+	 */
+	public static function SUBSTITUTE($text = '', $fromText = '', $toText = '', $instance = 0) {
+		$text		= PHPExcel_Calculation_Functions::flattenSingleValue($text);
+		$fromText	= PHPExcel_Calculation_Functions::flattenSingleValue($fromText);
+		$toText		= PHPExcel_Calculation_Functions::flattenSingleValue($toText);
+		$instance	= floor(PHPExcel_Calculation_Functions::flattenSingleValue($instance));
+
+		if ($instance == 0) {
+			if(function_exists('mb_str_replace')) {
+				return mb_str_replace($fromText,$toText,$text);
+			} else {
+				return str_replace($fromText,$toText,$text);
+			}
+		} else {
+			$pos = -1;
+			while($instance > 0) {
+				if (function_exists('mb_strpos')) {
+					$pos = mb_strpos($text, $fromText, $pos+1, 'UTF-8');
+				} else {
+					$pos = strpos($text, $fromText, $pos+1);
+				}
+				if ($pos === false) {
+					break;
+				}
+				--$instance;
+			}
+			if ($pos !== false) {
+				if (function_exists('mb_strlen')) {
+					return self::REPLACE($text,++$pos,mb_strlen($fromText, 'UTF-8'),$toText);
+				} else {
+					return self::REPLACE($text,++$pos,strlen($fromText),$toText);
+				}
+			}
+		}
+
+		return $text;
+	}	//	function SUBSTITUTE()
+
+
+	/**
+	 * RETURNSTRING
+	 *
+	 * @param	mixed	$testValue	Value to check
+	 * @return	boolean
+	 */
+	public static function RETURNSTRING($testValue = '') {
+		$testValue	= PHPExcel_Calculation_Functions::flattenSingleValue($testValue);
+
+		if (is_string($testValue)) {
+			return $testValue;
+		}
+		return Null;
+	}	//	function RETURNSTRING()
+
+
+	/**
+	 * TEXTFORMAT
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @param	string	$format	Format mask to use
+	 * @return	boolean
+	 */
+	public static function TEXTFORMAT($value,$format) {
+		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+		$format	= PHPExcel_Calculation_Functions::flattenSingleValue($format);
+
+		if ((is_string($value)) && (!is_numeric($value)) && PHPExcel_Shared_Date::isDateTimeFormatCode($format)) {
+			$value = PHPExcel_Calculation_DateTime::DATEVALUE($value);
+		}
+
+		return (string) PHPExcel_Style_NumberFormat::toFormattedString($value,$format);
+	}	//	function TEXTFORMAT()
+
+	/**
+	 * VALUE
+	 *
+	 * @param	mixed	$value	Value to check
+	 * @return	boolean
+	 */
+	public static function VALUE($value = '') {
+		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);
+
+		if (!is_numeric($value)) {
+            $numberValue = str_replace(
+                PHPExcel_Shared_String::getThousandsSeparator(), 
+                '', 
+                trim($value, " \t\n\r\0\x0B" . PHPExcel_Shared_String::getCurrencyCode())
+            );
+            if (is_numeric($numberValue)) {
+                return (float) $numberValue;
+            }
+
+            $dateSetting = PHPExcel_Calculation_Functions::getReturnDateType();
+            PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);
+
+            if (strpos($value, ':') !== false) {
+                $timeValue = PHPExcel_Calculation_DateTime::TIMEVALUE($value);
+                if ($timeValue !== PHPExcel_Calculation_Functions::VALUE()) {
+                    PHPExcel_Calculation_Functions::setReturnDateType($dateSetting);
+                    return $timeValue;
+                }
+            }
+			$dateValue = PHPExcel_Calculation_DateTime::DATEVALUE($value);
+            if ($dateValue !== PHPExcel_Calculation_Functions::VALUE()) {
+                PHPExcel_Calculation_Functions::setReturnDateType($dateSetting);
+                return $dateValue;
+            }
+            PHPExcel_Calculation_Functions::setReturnDateType($dateSetting);
+
+			return PHPExcel_Calculation_Functions::VALUE();
+		}
+		return (float) $value;
+	}
+
+}

admin/helpers/PHPExcel/Calculation/Token/Stack.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Calculation
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Calculation_Token_Stack
+ *
+ * @category	PHPExcel_Calculation_Token_Stack
+ * @package		PHPExcel_Calculation
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Calculation_Token_Stack {
+
+	/**
+	 *  The parser stack for formulae
+	 *
+	 *  @var mixed[]
+	 */
+	private $_stack = array();
+
+	/**
+	 *  Count of entries in the parser stack
+	 *
+	 *  @var integer
+	 */
+	private $_count = 0;
+
+
+	/**
+	 * Return the number of entries on the stack
+	 *
+	 * @return  integer
+	 */
+	public function count() {
+		return $this->_count;
+	}	//	function count()
+
+	/**
+	 * Push a new entry onto the stack
+	 *
+	 * @param  mixed  $type
+	 * @param  mixed  $value
+	 * @param  mixed  $reference
+	 */
+	public function push($type, $value, $reference = NULL) {
+		$this->_stack[$this->_count++] = array('type'		=> $type,
+											   'value'		=> $value,
+											   'reference'	=> $reference
+											  );
+		if ($type == 'Function') {
+			$localeFunction = PHPExcel_Calculation::_localeFunc($value);
+			if ($localeFunction != $value) {
+				$this->_stack[($this->_count - 1)]['localeValue'] = $localeFunction;
+			}
+		}
+	}	//	function push()
+
+	/**
+	 * Pop the last entry from the stack
+	 *
+	 * @return  mixed
+	 */
+	public function pop() {
+		if ($this->_count > 0) {
+			return $this->_stack[--$this->_count];
+		}
+		return NULL;
+	}	//	function pop()
+
+	/**
+	 * Return an entry from the stack without removing it
+	 *
+	 * @param   integer  $n  number indicating how far back in the stack we want to look
+	 * @return  mixed
+	 */
+	public function last($n = 1) {
+		if ($this->_count - $n < 0) {
+			return NULL;
+		}
+		return $this->_stack[$this->_count - $n];
+	}	//	function last()
+
+	/**
+	 * Clear the stack
+	 */
+	function clear() {
+		$this->_stack = array();
+		$this->_count = 0;
+	}
+
+}	//	class PHPExcel_Calculation_Token_Stack

admin/helpers/PHPExcel/Calculation/Token/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/Calculation/functionlist.txt

@@ -0,0 +1,351 @@
+ABS
+ACCRINT
+ACCRINTM
+ACOS
+ACOSH
+ADDRESS
+AMORDEGRC
+AMORLINC
+AND
+AREAS
+ASC
+ASIN
+ASINH
+ATAN
+ATAN2
+ATANH
+AVEDEV
+AVERAGE
+AVERAGEA
+AVERAGEIF
+AVERAGEIFS
+BAHTTEXT
+BESSELI
+BESSELJ
+BESSELK
+BESSELY
+BETADIST
+BETAINV
+BIN2DEC
+BIN2HEX
+BIN2OCT
+BINOMDIST
+CEILING
+CELL
+CHAR
+CHIDIST
+CHIINV
+CHITEST
+CHOOSE
+CLEAN
+CODE
+COLUMN
+COLUMNS
+COMBIN
+COMPLEX
+CONCATENATE
+CONFIDENCE
+CONVERT
+CORREL
+COS
+COSH
+COUNT
+COUNTA
+COUNTBLANK
+COUNTIF
+COUNTIFS
+COUPDAYBS
+COUPDAYBS
+COUPDAYSNC
+COUPNCD
+COUPNUM
+COUPPCD
+COVAR
+CRITBINOM
+CUBEKPIMEMBER
+CUBEMEMBER
+CUBEMEMBERPROPERTY
+CUBERANKEDMEMBER
+CUBESET
+CUBESETCOUNT
+CUBEVALUE
+CUMIPMT
+CUMPRINC
+DATE
+DATEDIF
+DATEVALUE
+DAVERAGE
+DAY
+DAYS360
+DB
+DCOUNT
+DCOUNTA
+DDB
+DEC2BIN
+DEC2HEX
+DEC2OCT
+DEGREES
+DELTA
+DEVSQ
+DGET
+DISC
+DMAX
+DMIN
+DOLLAR
+DOLLARDE
+DOLLARFR
+DPRODUCT
+DSTDEV
+DSTDEVP
+DSUM
+DURATION
+DVAR
+DVARP
+EDATE
+EFFECT
+EOMONTH
+ERF
+ERFC
+ERROR.TYPE
+EVEN
+EXACT
+EXP
+EXPONDIST
+FACT
+FACTDOUBLE
+FALSE
+FDIST
+FIND
+FINDB
+FINV
+FISHER
+FISHERINV
+FIXED
+FLOOR
+FORECAST
+FREQUENCY
+FTEST
+FV
+FVSCHEDULE
+GAMAMDIST
+GAMMAINV
+GAMMALN
+GCD
+GEOMEAN
+GESTEP
+GETPIVOTDATA
+GROWTH
+HARMEAN
+HEX2BIN
+HEX2OCT
+HLOOKUP
+HOUR
+HYPERLINK
+HYPGEOMDIST
+IF
+IFERROR
+IMABS
+IMAGINARY
+IMARGUMENT
+IMCONJUGATE
+IMCOS
+IMEXP
+IMLN
+IMLOG10
+IMLOG2
+IMPOWER
+IMPRODUCT
+IMREAL
+IMSIN
+IMSQRT
+IMSUB
+IMSUM
+INDEX
+INDIRECT
+INFO
+INT
+INTERCEPT
+INTRATE
+IPMT
+IRR
+ISBLANK
+ISERR
+ISERROR
+ISEVEN
+ISLOGICAL
+ISNA
+ISNONTEXT
+ISNUMBER
+ISODD
+ISPMT
+ISREF
+ISTEXT
+JIS
+KURT
+LARGE
+LCM
+LEFT
+LEFTB
+LEN
+LENB
+LINEST
+LN
+LOG
+LOG10
+LOGEST
+LOGINV
+LOGNORMDIST
+LOOKUP
+LOWER
+MATCH
+MAX
+MAXA
+MDETERM
+MDURATION
+MEDIAN
+MID
+MIDB
+MIN
+MINA
+MINUTE
+MINVERSE
+MIRR
+MMULT
+MOD
+MODE
+MONTH
+MROUND
+MULTINOMIAL
+N
+NA
+NEGBINOMDIST
+NETWORKDAYS
+NOMINAL
+NORMDIST
+NORMINV
+NORMSDIST
+NORMSINV
+NOT
+NOW
+NPER
+NPV
+OCT2BIN
+OCT2DEC
+OCT2HEX
+ODD
+ODDFPRICE
+ODDFYIELD
+ODDLPRICE
+ODDLYIELD
+OFFSET
+OR
+PEARSON
+PERCENTILE
+PERCENTRANK
+PERMUT
+PHONETIC
+PI
+PMT
+POISSON
+POWER
+PPMT
+PRICE
+PRICEDISC
+PRICEMAT
+PROB
+PRODUCT
+PROPER
+PV
+QUARTILE
+QUOTIENT
+RADIANS
+RAND
+RANDBETWEEN
+RANK
+RATE
+RECEIVED
+REPLACE
+REPLACEB
+REPT
+RIGHT
+RIGHTB
+ROMAN
+ROUND
+ROUNDDOWN
+ROUNDUP
+ROW
+ROWS
+RSQ
+RTD
+SEARCH
+SEARCHB
+SECOND
+SERIESSUM
+SIGN
+SIN
+SINH
+SKEW
+SLN
+SLOPE
+SMALL
+SQRT
+SQRTPI
+STANDARDIZE
+STDEV
+STDEVA
+STDEVP
+STDEVPA
+STEYX
+SUBSTITUTE
+SUBTOTAL
+SUM
+SUMIF
+SUMIFS
+SUMPRODUCT
+SUMSQ
+SUMX2MY2
+SUMX2PY2
+SUMXMY2
+SYD
+T
+TAN
+TANH
+TBILLEQ
+TBILLPRICE
+TBILLYIELD
+TDIST
+TEXT
+TIME
+TIMEVALUE
+TINV
+TODAY
+TRANSPOSE
+TREND
+TRIM
+TRIMMEAN
+TRUE
+TRUNC
+TTEST
+TYPE
+UPPER
+USDOLLAR
+VALUE
+VAR
+VARA
+VARP
+VARPA
+VDB
+VERSION
+VLOOKUP
+WEEKDAY
+WEEKNUM
+WEIBULL
+WORKDAY
+XIRR
+XNPV
+YEAR
+YEARFRAC
+YIELD
+YIELDDISC
+YIELDMAT
+ZTEST

admin/helpers/PHPExcel/Calculation/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/Cell/AdvancedValueBinder.php

@@ -0,0 +1,192 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+    /**
+     * @ignore
+     */
+    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Cell_AdvancedValueBinder
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_AdvancedValueBinder extends PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
+{
+    /**
+     * Bind value to a cell
+     *
+     * @param  PHPExcel_Cell  $cell  Cell to bind value to
+     * @param  mixed $value          Value to bind in cell
+     * @return boolean
+     */
+    public function bindValue(PHPExcel_Cell $cell, $value = null)
+    {
+        // sanitize UTF-8 strings
+        if (is_string($value)) {
+            $value = PHPExcel_Shared_String::SanitizeUTF8($value);
+        }
+
+        // Find out data type
+        $dataType = parent::dataTypeForValue($value);
+
+        // Style logic - strings
+        if ($dataType === PHPExcel_Cell_DataType::TYPE_STRING && !$value instanceof PHPExcel_RichText) {
+            //    Test for booleans using locale-setting
+            if ($value == PHPExcel_Calculation::getTRUE()) {
+                $cell->setValueExplicit( TRUE, PHPExcel_Cell_DataType::TYPE_BOOL);
+                return true;
+            } elseif($value == PHPExcel_Calculation::getFALSE()) {
+                $cell->setValueExplicit( FALSE, PHPExcel_Cell_DataType::TYPE_BOOL);
+                return true;
+            }
+
+            // Check for number in scientific format
+            if (preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_NUMBER.'$/', $value)) {
+                $cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                return true;
+            }
+
+            // Check for fraction
+            if (preg_match('/^([+-]?)\s*([0-9]+)\s?\/\s*([0-9]+)$/', $value, $matches)) {
+                // Convert value to number
+                $value = $matches[2] / $matches[3];
+                if ($matches[1] == '-') $value = 0 - $value;
+                $cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode( '??/??' );
+                return true;
+            } elseif (preg_match('/^([+-]?)([0-9]*) +([0-9]*)\s?\/\s*([0-9]*)$/', $value, $matches)) {
+                // Convert value to number
+                $value = $matches[2] + ($matches[3] / $matches[4]);
+                if ($matches[1] == '-') $value = 0 - $value;
+                $cell->setValueExplicit( (float) $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode( '# ??/??' );
+                return true;
+            }
+
+            // Check for percentage
+            if (preg_match('/^\-?[0-9]*\.?[0-9]*\s?\%$/', $value)) {
+                // Convert value to number
+                $value = (float) str_replace('%', '', $value) / 100;
+                $cell->setValueExplicit( $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE_00 );
+                return true;
+            }
+
+            // Check for currency
+            $currencyCode = PHPExcel_Shared_String::getCurrencyCode();
+            $decimalSeparator = PHPExcel_Shared_String::getDecimalSeparator();
+            $thousandsSeparator = PHPExcel_Shared_String::getThousandsSeparator();
+            if (preg_match('/^'.preg_quote($currencyCode).' *(\d{1,3}('.preg_quote($thousandsSeparator).'\d{3})*|(\d+))('.preg_quote($decimalSeparator).'\d{2})?$/', $value)) {
+                // Convert value to number
+                $value = (float) trim(str_replace(array($currencyCode, $thousandsSeparator, $decimalSeparator), array('', '', '.'), $value));
+                $cell->setValueExplicit( $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode(
+                        str_replace('$', $currencyCode, PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_USD_SIMPLE )
+                    );
+                return true;
+            } elseif (preg_match('/^\$ *(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?$/', $value)) {
+                // Convert value to number
+                $value = (float) trim(str_replace(array('$',','), '', $value));
+                $cell->setValueExplicit( $value, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_CURRENCY_USD_SIMPLE );
+                return true;
+            }
+
+            // Check for time without seconds e.g. '9:45', '09:45'
+            if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d$/', $value)) {
+                // Convert value to number
+                list($h, $m) = explode(':', $value);
+                $days = $h / 24 + $m / 1440;
+                $cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME3 );
+                return true;
+            }
+
+            // Check for time with seconds '9:45:59', '09:45:59'
+            if (preg_match('/^(\d|[0-1]\d|2[0-3]):[0-5]\d:[0-5]\d$/', $value)) {
+                // Convert value to number
+                list($h, $m, $s) = explode(':', $value);
+                $days = $h / 24 + $m / 1440 + $s / 86400;
+                // Convert value to number
+                $cell->setValueExplicit($days, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode( PHPExcel_Style_NumberFormat::FORMAT_DATE_TIME4 );
+                return true;
+            }
+
+            // Check for datetime, e.g. '2008-12-31', '2008-12-31 15:59', '2008-12-31 15:59:10'
+            if (($d = PHPExcel_Shared_Date::stringToExcel($value)) !== false) {
+                // Convert value to number
+                $cell->setValueExplicit($d, PHPExcel_Cell_DataType::TYPE_NUMERIC);
+                // Determine style. Either there is a time part or not. Look for ':'
+                if (strpos($value, ':') !== false) {
+                    $formatCode = 'yyyy-mm-dd h:mm';
+                } else {
+                    $formatCode = 'yyyy-mm-dd';
+                }
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getNumberFormat()->setFormatCode($formatCode);
+                return true;
+            }
+
+            // Check for newline character "\n"
+            if (strpos($value, "\n") !== FALSE) {
+                $value = PHPExcel_Shared_String::SanitizeUTF8($value);
+                $cell->setValueExplicit($value, PHPExcel_Cell_DataType::TYPE_STRING);
+                // Set style
+                $cell->getWorksheet()->getStyle( $cell->getCoordinate() )
+                    ->getAlignment()->setWrapText(TRUE);
+                return true;
+            }
+        }
+
+        // Not bound yet? Use parent...
+        return parent::bindValue($cell, $value);
+    }
+}

admin/helpers/PHPExcel/Cell/DataType.php

@@ -0,0 +1,122 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Cell_DataType
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_DataType
+{
+    /* Data types */
+    const TYPE_STRING2  = 'str';
+    const TYPE_STRING   = 's';
+    const TYPE_FORMULA  = 'f';
+    const TYPE_NUMERIC  = 'n';
+    const TYPE_BOOL     = 'b';
+    const TYPE_NULL     = 'null';
+    const TYPE_INLINE   = 'inlineStr';
+    const TYPE_ERROR    = 'e';
+
+    /**
+     * List of error codes
+     *
+     * @var array
+     */
+    private static $_errorCodes = array(
+        '#NULL!'  => 0,
+        '#DIV/0!' => 1,
+        '#VALUE!' => 2,
+        '#REF!'   => 3,
+        '#NAME?'  => 4,
+        '#NUM!'   => 5,
+        '#N/A'    => 6
+    );
+
+    /**
+     * Get list of error codes
+     *
+     * @return array
+     */
+    public static function getErrorCodes() {
+        return self::$_errorCodes;
+    }
+
+    /**
+     * DataType for value
+     *
+     * @deprecated  Replaced by PHPExcel_Cell_IValueBinder infrastructure, will be removed in version 1.8.0
+     * @param       mixed  $pValue
+     * @return      string
+     */
+    public static function dataTypeForValue($pValue = null) {
+        return PHPExcel_Cell_DefaultValueBinder::dataTypeForValue($pValue);
+    }
+
+    /**
+     * Check a string that it satisfies Excel requirements
+     *
+     * @param  mixed  Value to sanitize to an Excel string
+     * @return mixed  Sanitized value
+     */
+    public static function checkString($pValue = null)
+    {
+        if ($pValue instanceof PHPExcel_RichText) {
+            // TODO: Sanitize Rich-Text string (max. character count is 32,767)
+            return $pValue;
+        }
+
+        // string must never be longer than 32,767 characters, truncate if necessary
+        $pValue = PHPExcel_Shared_String::Substring($pValue, 0, 32767);
+
+        // we require that newline is represented as "\n" in core, not as "\r\n" or "\r"
+        $pValue = str_replace(array("\r\n", "\r"), "\n", $pValue);
+
+        return $pValue;
+    }
+
+    /**
+     * Check a value that it is a valid error code
+     *
+     * @param  mixed   Value to sanitize to an Excel error code
+     * @return string  Sanitized value
+     */
+    public static function checkErrorCode($pValue = null)
+    {
+        $pValue = (string) $pValue;
+
+        if ( !array_key_exists($pValue, self::$_errorCodes) ) {
+            $pValue = '#NULL!';
+        }
+
+        return $pValue;
+    }
+
+}

admin/helpers/PHPExcel/Cell/DataValidation.php

@@ -0,0 +1,472 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Cell_DataValidation
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_DataValidation
+{
+    /* Data validation types */
+    const TYPE_NONE        = 'none';
+    const TYPE_CUSTOM      = 'custom';
+    const TYPE_DATE        = 'date';
+    const TYPE_DECIMAL     = 'decimal';
+    const TYPE_LIST        = 'list';
+    const TYPE_TEXTLENGTH  = 'textLength';
+    const TYPE_TIME        = 'time';
+    const TYPE_WHOLE       = 'whole';
+
+    /* Data validation error styles */
+    const STYLE_STOP         = 'stop';
+    const STYLE_WARNING      = 'warning';
+    const STYLE_INFORMATION  = 'information';
+
+    /* Data validation operators */
+    const OPERATOR_BETWEEN             = 'between';
+    const OPERATOR_EQUAL               = 'equal';
+    const OPERATOR_GREATERTHAN         = 'greaterThan';
+    const OPERATOR_GREATERTHANOREQUAL  = 'greaterThanOrEqual';
+    const OPERATOR_LESSTHAN            = 'lessThan';
+    const OPERATOR_LESSTHANOREQUAL     = 'lessThanOrEqual';
+    const OPERATOR_NOTBETWEEN          = 'notBetween';
+    const OPERATOR_NOTEQUAL            = 'notEqual';
+
+    /**
+     * Formula 1
+     *
+     * @var string
+     */
+    private $_formula1;
+
+    /**
+     * Formula 2
+     *
+     * @var string
+     */
+    private $_formula2;
+
+    /**
+     * Type
+     *
+     * @var string
+     */
+    private $_type = PHPExcel_Cell_DataValidation::TYPE_NONE;
+
+    /**
+     * Error style
+     *
+     * @var string
+     */
+    private $_errorStyle = PHPExcel_Cell_DataValidation::STYLE_STOP;
+
+    /**
+     * Operator
+     *
+     * @var string
+     */
+    private $_operator;
+
+    /**
+     * Allow Blank
+     *
+     * @var boolean
+     */
+    private $_allowBlank;
+
+    /**
+     * Show DropDown
+     *
+     * @var boolean
+     */
+    private $_showDropDown;
+
+    /**
+     * Show InputMessage
+     *
+     * @var boolean
+     */
+    private $_showInputMessage;
+
+    /**
+     * Show ErrorMessage
+     *
+     * @var boolean
+     */
+    private $_showErrorMessage;
+
+    /**
+     * Error title
+     *
+     * @var string
+     */
+    private $_errorTitle;
+
+    /**
+     * Error
+     *
+     * @var string
+     */
+    private $_error;
+
+    /**
+     * Prompt title
+     *
+     * @var string
+     */
+    private $_promptTitle;
+
+    /**
+     * Prompt
+     *
+     * @var string
+     */
+    private $_prompt;
+
+    /**
+     * Create a new PHPExcel_Cell_DataValidation
+     */
+    public function __construct()
+    {
+        // Initialise member variables
+        $this->_formula1          = '';
+        $this->_formula2          = '';
+        $this->_type              = PHPExcel_Cell_DataValidation::TYPE_NONE;
+        $this->_errorStyle        = PHPExcel_Cell_DataValidation::STYLE_STOP;
+        $this->_operator          = '';
+        $this->_allowBlank        = FALSE;
+        $this->_showDropDown      = FALSE;
+        $this->_showInputMessage  = FALSE;
+        $this->_showErrorMessage  = FALSE;
+        $this->_errorTitle        = '';
+        $this->_error             = '';
+        $this->_promptTitle       = '';
+        $this->_prompt            = '';
+    }
+
+    /**
+     * Get Formula 1
+     *
+     * @return string
+     */
+    public function getFormula1() {
+        return $this->_formula1;
+    }
+
+    /**
+     * Set Formula 1
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setFormula1($value = '') {
+        $this->_formula1 = $value;
+        return $this;
+    }
+
+    /**
+     * Get Formula 2
+     *
+     * @return string
+     */
+    public function getFormula2() {
+        return $this->_formula2;
+    }
+
+    /**
+     * Set Formula 2
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setFormula2($value = '') {
+        $this->_formula2 = $value;
+        return $this;
+    }
+
+    /**
+     * Get Type
+     *
+     * @return string
+     */
+    public function getType() {
+        return $this->_type;
+    }
+
+    /**
+     * Set Type
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setType($value = PHPExcel_Cell_DataValidation::TYPE_NONE) {
+        $this->_type = $value;
+        return $this;
+    }
+
+    /**
+     * Get Error style
+     *
+     * @return string
+     */
+    public function getErrorStyle() {
+        return $this->_errorStyle;
+    }
+
+    /**
+     * Set Error style
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setErrorStyle($value = PHPExcel_Cell_DataValidation::STYLE_STOP) {
+        $this->_errorStyle = $value;
+        return $this;
+    }
+
+    /**
+     * Get Operator
+     *
+     * @return string
+     */
+    public function getOperator() {
+        return $this->_operator;
+    }
+
+    /**
+     * Set Operator
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setOperator($value = '') {
+        $this->_operator = $value;
+        return $this;
+    }
+
+    /**
+     * Get Allow Blank
+     *
+     * @return boolean
+     */
+    public function getAllowBlank() {
+        return $this->_allowBlank;
+    }
+
+    /**
+     * Set Allow Blank
+     *
+     * @param  boolean    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setAllowBlank($value = false) {
+        $this->_allowBlank = $value;
+        return $this;
+    }
+
+    /**
+     * Get Show DropDown
+     *
+     * @return boolean
+     */
+    public function getShowDropDown() {
+        return $this->_showDropDown;
+    }
+
+    /**
+     * Set Show DropDown
+     *
+     * @param  boolean    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setShowDropDown($value = false) {
+        $this->_showDropDown = $value;
+        return $this;
+    }
+
+    /**
+     * Get Show InputMessage
+     *
+     * @return boolean
+     */
+    public function getShowInputMessage() {
+        return $this->_showInputMessage;
+    }
+
+    /**
+     * Set Show InputMessage
+     *
+     * @param  boolean    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setShowInputMessage($value = false) {
+        $this->_showInputMessage = $value;
+        return $this;
+    }
+
+    /**
+     * Get Show ErrorMessage
+     *
+     * @return boolean
+     */
+    public function getShowErrorMessage() {
+        return $this->_showErrorMessage;
+    }
+
+    /**
+     * Set Show ErrorMessage
+     *
+     * @param  boolean    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setShowErrorMessage($value = false) {
+        $this->_showErrorMessage = $value;
+        return $this;
+    }
+
+    /**
+     * Get Error title
+     *
+     * @return string
+     */
+    public function getErrorTitle() {
+        return $this->_errorTitle;
+    }
+
+    /**
+     * Set Error title
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setErrorTitle($value = '') {
+        $this->_errorTitle = $value;
+        return $this;
+    }
+
+    /**
+     * Get Error
+     *
+     * @return string
+     */
+    public function getError() {
+        return $this->_error;
+    }
+
+    /**
+     * Set Error
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setError($value = '') {
+        $this->_error = $value;
+        return $this;
+    }
+
+    /**
+     * Get Prompt title
+     *
+     * @return string
+     */
+    public function getPromptTitle() {
+        return $this->_promptTitle;
+    }
+
+    /**
+     * Set Prompt title
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setPromptTitle($value = '') {
+        $this->_promptTitle = $value;
+        return $this;
+    }
+
+    /**
+     * Get Prompt
+     *
+     * @return string
+     */
+    public function getPrompt() {
+        return $this->_prompt;
+    }
+
+    /**
+     * Set Prompt
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_DataValidation
+     */
+    public function setPrompt($value = '') {
+        $this->_prompt = $value;
+        return $this;
+    }
+
+    /**
+     * Get hash code
+     *
+     * @return string    Hash code
+     */
+    public function getHashCode() {
+        return md5(
+              $this->_formula1
+            . $this->_formula2
+            . $this->_type = PHPExcel_Cell_DataValidation::TYPE_NONE
+            . $this->_errorStyle = PHPExcel_Cell_DataValidation::STYLE_STOP
+            . $this->_operator
+            . ($this->_allowBlank ? 't' : 'f')
+            . ($this->_showDropDown ? 't' : 'f')
+            . ($this->_showInputMessage ? 't' : 'f')
+            . ($this->_showErrorMessage ? 't' : 'f')
+            . $this->_errorTitle
+            . $this->_error
+            . $this->_promptTitle
+            . $this->_prompt
+            . __CLASS__
+        );
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone() {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+}

admin/helpers/PHPExcel/Cell/DefaultValueBinder.php

@@ -0,0 +1,100 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+    /**
+     * @ignore
+     */
+    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+}
+
+
+/**
+ * PHPExcel_Cell_DefaultValueBinder
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_DefaultValueBinder implements PHPExcel_Cell_IValueBinder
+{
+    /**
+     * Bind value to a cell
+     *
+     * @param  PHPExcel_Cell  $cell   Cell to bind value to
+     * @param  mixed          $value  Value to bind in cell
+     * @return boolean
+     */
+    public function bindValue(PHPExcel_Cell $cell, $value = null)
+    {
+        // sanitize UTF-8 strings
+        if (is_string($value)) {
+            $value = PHPExcel_Shared_String::SanitizeUTF8($value);
+        }
+
+        // Set value explicit
+        $cell->setValueExplicit( $value, self::dataTypeForValue($value) );
+
+        // Done!
+        return TRUE;
+    }
+
+    /**
+     * DataType for value
+     *
+     * @param   mixed  $pValue
+     * @return  string
+     */
+    public static function dataTypeForValue($pValue = null) {
+        // Match the value against a few data types
+        if (is_null($pValue)) {
+            return PHPExcel_Cell_DataType::TYPE_NULL;
+        } elseif ($pValue === '') {
+            return PHPExcel_Cell_DataType::TYPE_STRING;
+        } elseif ($pValue instanceof PHPExcel_RichText) {
+            return PHPExcel_Cell_DataType::TYPE_INLINE;
+        } elseif ($pValue{0} === '=' && strlen($pValue) > 1) {
+            return PHPExcel_Cell_DataType::TYPE_FORMULA;
+        } elseif (is_bool($pValue)) {
+            return PHPExcel_Cell_DataType::TYPE_BOOL;
+        } elseif (is_float($pValue) || is_int($pValue)) {
+            return PHPExcel_Cell_DataType::TYPE_NUMERIC;
+        } elseif (preg_match('/^\-?([0-9]+\\.?[0-9]*|[0-9]*\\.?[0-9]+)$/', $pValue)) {
+            if (is_string($pValue) && $pValue{0} === '0' && strlen($pValue) > 1 && $pValue{1} !== '.' ) {
+                return PHPExcel_Cell_DataType::TYPE_STRING;
+            }
+            return PHPExcel_Cell_DataType::TYPE_NUMERIC;
+        } elseif (is_string($pValue) && array_key_exists($pValue, PHPExcel_Cell_DataType::getErrorCodes())) {
+            return PHPExcel_Cell_DataType::TYPE_ERROR;
+        }
+
+        return PHPExcel_Cell_DataType::TYPE_STRING;
+    }
+}

admin/helpers/PHPExcel/Cell/Hyperlink.php

@@ -0,0 +1,126 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Cell_Hyperlink
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Cell_Hyperlink
+{
+    /**
+     * URL to link the cell to
+     *
+     * @var string
+     */
+    private $_url;
+
+    /**
+     * Tooltip to display on the hyperlink
+     *
+     * @var string
+     */
+    private $_tooltip;
+
+    /**
+     * Create a new PHPExcel_Cell_Hyperlink
+     *
+     * @param  string  $pUrl      Url to link the cell to
+     * @param  string  $pTooltip  Tooltip to display on the hyperlink
+     */
+    public function __construct($pUrl = '', $pTooltip = '')
+    {
+        // Initialise member variables
+        $this->_url         = $pUrl;
+        $this->_tooltip     = $pTooltip;
+    }
+
+    /**
+     * Get URL
+     *
+     * @return string
+     */
+    public function getUrl() {
+        return $this->_url;
+    }
+
+    /**
+     * Set URL
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_Hyperlink
+     */
+    public function setUrl($value = '') {
+        $this->_url = $value;
+        return $this;
+    }
+
+    /**
+     * Get tooltip
+     *
+     * @return string
+     */
+    public function getTooltip() {
+        return $this->_tooltip;
+    }
+
+    /**
+     * Set tooltip
+     *
+     * @param  string    $value
+     * @return PHPExcel_Cell_Hyperlink
+     */
+    public function setTooltip($value = '') {
+        $this->_tooltip = $value;
+        return $this;
+    }
+
+    /**
+     * Is this hyperlink internal? (to another worksheet)
+     *
+     * @return boolean
+     */
+    public function isInternal() {
+        return strpos($this->_url, 'sheet://') !== false;
+    }
+
+    /**
+     * Get hash code
+     *
+     * @return string    Hash code
+     */
+    public function getHashCode() {
+        return md5(
+              $this->_url
+            . $this->_tooltip
+            . __CLASS__
+        );
+    }
+}

admin/helpers/PHPExcel/Cell/IValueBinder.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Cell_IValueBinder
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Cell
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+interface PHPExcel_Cell_IValueBinder
+{
+    /**
+     * Bind value to a cell
+     *
+     * @param  PHPExcel_Cell $cell    Cell to bind value to
+     * @param  mixed $value           Value to bind in cell
+     * @return boolean
+     */
+    public function bindValue(PHPExcel_Cell $cell, $value = NULL);
+}

admin/helpers/PHPExcel/Cell/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/Chart.php

@@ -0,0 +1,635 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart
+{
+	/**
+	 * Chart Name
+	 *
+	 * @var string
+	 */
+	private $_name = '';
+
+	/**
+	 * Worksheet
+	 *
+	 * @var PHPExcel_Worksheet
+	 */
+	private $_worksheet = null;
+
+	/**
+	 * Chart Title
+	 *
+	 * @var PHPExcel_Chart_Title
+	 */
+	private $_title = null;
+
+	/**
+	 * Chart Legend
+	 *
+	 * @var PHPExcel_Chart_Legend
+	 */
+	private $_legend = null;
+
+	/**
+	 * X-Axis Label
+	 *
+	 * @var PHPExcel_Chart_Title
+	 */
+	private $_xAxisLabel = null;
+
+	/**
+	 * Y-Axis Label
+	 *
+	 * @var PHPExcel_Chart_Title
+	 */
+	private $_yAxisLabel = null;
+
+	/**
+	 * Chart Plot Area
+	 *
+	 * @var PHPExcel_Chart_PlotArea
+	 */
+	private $_plotArea = null;
+
+	/**
+	 * Plot Visible Only
+	 *
+	 * @var boolean
+	 */
+	private $_plotVisibleOnly = true;
+
+	/**
+	 * Display Blanks as
+	 *
+	 * @var string
+	 */
+	private $_displayBlanksAs = '0';
+
+  /**
+   * Chart Asix Y as
+   *
+   * @var PHPExcel_Chart_Axis
+   */
+  private $_yAxis = null;
+
+  /**
+   * Chart Asix X as
+   *
+   * @var PHPExcel_Chart_Axis
+   */
+  private $_xAxis = null;
+
+  /**
+   * Chart Major Gridlines as
+   *
+   * @var PHPExcel_Chart_Gridlines
+   */
+  private $_majorGridlines = null;
+
+  /**
+   * Chart Minor Gridlines as
+   *
+   * @var PHPExcel_Chart_Gridlines
+   */
+  private $_minorGridlines = null;
+
+	/**
+	 * Top-Left Cell Position
+	 *
+	 * @var string
+	 */
+	private $_topLeftCellRef = 'A1';
+
+
+	/**
+	 * Top-Left X-Offset
+	 *
+	 * @var integer
+	 */
+	private $_topLeftXOffset = 0;
+
+
+	/**
+	 * Top-Left Y-Offset
+	 *
+	 * @var integer
+	 */
+	private $_topLeftYOffset = 0;
+
+
+	/**
+	 * Bottom-Right Cell Position
+	 *
+	 * @var string
+	 */
+	private $_bottomRightCellRef = 'A1';
+
+
+	/**
+	 * Bottom-Right X-Offset
+	 *
+	 * @var integer
+	 */
+	private $_bottomRightXOffset = 10;
+
+
+	/**
+	 * Bottom-Right Y-Offset
+	 *
+	 * @var integer
+	 */
+	private $_bottomRightYOffset = 10;
+
+
+	/**
+	 * Create a new PHPExcel_Chart
+	 */
+	public function __construct($name, PHPExcel_Chart_Title $title = null, PHPExcel_Chart_Legend $legend = null, PHPExcel_Chart_PlotArea $plotArea = null, $plotVisibleOnly = true, $displayBlanksAs = '0', PHPExcel_Chart_Title $xAxisLabel = null, PHPExcel_Chart_Title $yAxisLabel = null, PHPExcel_Chart_Axis $xAxis = null, PHPExcel_Chart_Axis $yAxis = null, PHPExcel_Chart_Gridlines $majorGridlines = null, PHPExcel_Chart_Gridlines $minorGridlines = null)
+	{
+		$this->_name = $name;
+		$this->_title = $title;
+		$this->_legend = $legend;
+		$this->_xAxisLabel = $xAxisLabel;
+		$this->_yAxisLabel = $yAxisLabel;
+		$this->_plotArea = $plotArea;
+		$this->_plotVisibleOnly = $plotVisibleOnly;
+		$this->_displayBlanksAs = $displayBlanksAs;
+		$this->_xAxis = $xAxis;
+		$this->_yAxis = $yAxis;
+    $this->_majorGridlines = $majorGridlines;
+    $this->_minorGridlines = $minorGridlines;
+	}
+
+	/**
+	 * Get Name
+	 *
+	 * @return string
+	 */
+	public function getName() {
+		return $this->_name;
+	}
+
+	/**
+	 * Get Worksheet
+	 *
+	 * @return PHPExcel_Worksheet
+	 */
+	public function getWorksheet() {
+		return $this->_worksheet;
+	}
+
+	/**
+	 * Set Worksheet
+	 *
+	 * @param	PHPExcel_Worksheet	$pValue
+	 * @throws	PHPExcel_Chart_Exception
+	 * @return PHPExcel_Chart
+	 */
+	public function setWorksheet(PHPExcel_Worksheet $pValue = null) {
+		$this->_worksheet = $pValue;
+
+		return $this;
+	}
+
+	/**
+	 * Get Title
+	 *
+	 * @return PHPExcel_Chart_Title
+	 */
+	public function getTitle() {
+		return $this->_title;
+	}
+
+	/**
+	 * Set Title
+	 *
+	 * @param	PHPExcel_Chart_Title $title
+	 * @return	PHPExcel_Chart
+	 */
+	public function setTitle(PHPExcel_Chart_Title $title) {
+		$this->_title = $title;
+
+		return $this;
+	}
+
+	/**
+	 * Get Legend
+	 *
+	 * @return PHPExcel_Chart_Legend
+	 */
+	public function getLegend() {
+		return $this->_legend;
+	}
+
+	/**
+	 * Set Legend
+	 *
+	 * @param	PHPExcel_Chart_Legend $legend
+	 * @return	PHPExcel_Chart
+	 */
+	public function setLegend(PHPExcel_Chart_Legend $legend) {
+		$this->_legend = $legend;
+
+		return $this;
+	}
+
+	/**
+	 * Get X-Axis Label
+	 *
+	 * @return PHPExcel_Chart_Title
+	 */
+	public function getXAxisLabel() {
+		return $this->_xAxisLabel;
+	}
+
+	/**
+	 * Set X-Axis Label
+	 *
+	 * @param	PHPExcel_Chart_Title $label
+	 * @return	PHPExcel_Chart
+	 */
+	public function setXAxisLabel(PHPExcel_Chart_Title $label) {
+		$this->_xAxisLabel = $label;
+
+		return $this;
+	}
+
+	/**
+	 * Get Y-Axis Label
+	 *
+	 * @return PHPExcel_Chart_Title
+	 */
+	public function getYAxisLabel() {
+		return $this->_yAxisLabel;
+	}
+
+	/**
+	 * Set Y-Axis Label
+	 *
+	 * @param	PHPExcel_Chart_Title $label
+	 * @return	PHPExcel_Chart
+	 */
+	public function setYAxisLabel(PHPExcel_Chart_Title $label) {
+		$this->_yAxisLabel = $label;
+
+		return $this;
+	}
+
+	/**
+	 * Get Plot Area
+	 *
+	 * @return PHPExcel_Chart_PlotArea
+	 */
+	public function getPlotArea() {
+		return $this->_plotArea;
+	}
+
+	/**
+	 * Get Plot Visible Only
+	 *
+	 * @return boolean
+	 */
+	public function getPlotVisibleOnly() {
+		return $this->_plotVisibleOnly;
+	}
+
+	/**
+	 * Set Plot Visible Only
+	 *
+	 * @param boolean $plotVisibleOnly
+	 * @return PHPExcel_Chart
+	 */
+	public function setPlotVisibleOnly($plotVisibleOnly = true) {
+		$this->_plotVisibleOnly = $plotVisibleOnly;
+
+		return $this;
+	}
+
+	/**
+	 * Get Display Blanks as
+	 *
+	 * @return string
+	 */
+	public function getDisplayBlanksAs() {
+		return $this->_displayBlanksAs;
+	}
+
+	/**
+	 * Set Display Blanks as
+	 *
+	 * @param string $displayBlanksAs
+	 * @return PHPExcel_Chart
+	 */
+	public function setDisplayBlanksAs($displayBlanksAs = '0') {
+		$this->_displayBlanksAs = $displayBlanksAs;
+	}
+
+
+  /**
+   * Get yAxis
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+  public function getChartAxisY() {
+    if($this->_yAxis !== NULL){
+      return $this->_yAxis;
+    }
+
+    return new PHPExcel_Chart_Axis();
+  }
+
+  /**
+   * Get xAxis
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+  public function getChartAxisX() {
+    if($this->_xAxis !== NULL){
+      return $this->_xAxis;
+    }
+
+    return new PHPExcel_Chart_Axis();
+  }
+
+  /**
+   * Get Major Gridlines
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+  public function getMajorGridlines() {
+    if($this->_majorGridlines !== NULL){
+      return $this->_majorGridlines;
+    }
+
+    return new PHPExcel_Chart_Gridlines();
+  }
+
+  /**
+   * Get Minor Gridlines
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+  public function getMinorGridlines() {
+    if($this->_minorGridlines !== NULL){
+      return $this->_minorGridlines;
+    }
+
+    return new PHPExcel_Chart_Gridlines();
+  }
+
+
+	/**
+	 * Set the Top Left position for the chart
+	 *
+	 * @param	string	$cell
+	 * @param	integer	$xOffset
+	 * @param	integer	$yOffset
+	 * @return PHPExcel_Chart
+	 */
+	public function setTopLeftPosition($cell, $xOffset=null, $yOffset=null) {
+		$this->_topLeftCellRef = $cell;
+		if (!is_null($xOffset))
+			$this->setTopLeftXOffset($xOffset);
+		if (!is_null($yOffset))
+			$this->setTopLeftYOffset($yOffset);
+
+		return $this;
+	}
+
+	/**
+	 * Get the top left position of the chart
+	 *
+	 * @return array	an associative array containing the cell address, X-Offset and Y-Offset from the top left of that cell
+	 */
+	public function getTopLeftPosition() {
+		return array( 'cell'	=> $this->_topLeftCellRef,
+					  'xOffset'	=> $this->_topLeftXOffset,
+					  'yOffset'	=> $this->_topLeftYOffset
+					);
+	}
+
+	/**
+	 * Get the cell address where the top left of the chart is fixed
+	 *
+	 * @return string
+	 */
+	public function getTopLeftCell() {
+		return $this->_topLeftCellRef;
+	}
+
+	/**
+	 * Set the Top Left cell position for the chart
+	 *
+	 * @param	string	$cell
+	 * @return PHPExcel_Chart
+	 */
+	public function setTopLeftCell($cell) {
+		$this->_topLeftCellRef = $cell;
+
+		return $this;
+	}
+
+	/**
+	 * Set the offset position within the Top Left cell for the chart
+	 *
+	 * @param	integer	$xOffset
+	 * @param	integer	$yOffset
+	 * @return PHPExcel_Chart
+	 */
+	public function setTopLeftOffset($xOffset=null,$yOffset=null) {
+		if (!is_null($xOffset))
+			$this->setTopLeftXOffset($xOffset);
+		if (!is_null($yOffset))
+			$this->setTopLeftYOffset($yOffset);
+
+		return $this;
+	}
+
+	/**
+	 * Get the offset position within the Top Left cell for the chart
+	 *
+	 * @return integer[]
+	 */
+	public function getTopLeftOffset() {
+		return array( 'X' => $this->_topLeftXOffset,
+					  'Y' => $this->_topLeftYOffset
+					);
+	}
+
+	public function setTopLeftXOffset($xOffset) {
+		$this->_topLeftXOffset = $xOffset;
+
+		return $this;
+	}
+
+	public function getTopLeftXOffset() {
+		return $this->_topLeftXOffset;
+	}
+
+	public function setTopLeftYOffset($yOffset) {
+		$this->_topLeftYOffset = $yOffset;
+
+		return $this;
+	}
+
+	public function getTopLeftYOffset() {
+		return $this->_topLeftYOffset;
+	}
+
+	/**
+	 * Set the Bottom Right position of the chart
+	 *
+	 * @param	string	$cell
+	 * @param	integer	$xOffset
+	 * @param	integer	$yOffset
+	 * @return PHPExcel_Chart
+	 */
+	public function setBottomRightPosition($cell, $xOffset=null, $yOffset=null) {
+		$this->_bottomRightCellRef = $cell;
+		if (!is_null($xOffset))
+			$this->setBottomRightXOffset($xOffset);
+		if (!is_null($yOffset))
+			$this->setBottomRightYOffset($yOffset);
+
+		return $this;
+	}
+
+	/**
+	 * Get the bottom right position of the chart
+	 *
+	 * @return array	an associative array containing the cell address, X-Offset and Y-Offset from the top left of that cell
+	 */
+	public function getBottomRightPosition() {
+		return array( 'cell'	=> $this->_bottomRightCellRef,
+					  'xOffset'	=> $this->_bottomRightXOffset,
+					  'yOffset'	=> $this->_bottomRightYOffset
+					);
+	}
+
+	public function setBottomRightCell($cell) {
+		$this->_bottomRightCellRef = $cell;
+
+		return $this;
+	}
+
+	/**
+	 * Get the cell address where the bottom right of the chart is fixed
+	 *
+	 * @return string
+	 */
+	public function getBottomRightCell() {
+		return $this->_bottomRightCellRef;
+	}
+
+	/**
+	 * Set the offset position within the Bottom Right cell for the chart
+	 *
+	 * @param	integer	$xOffset
+	 * @param	integer	$yOffset
+	 * @return PHPExcel_Chart
+	 */
+	public function setBottomRightOffset($xOffset=null,$yOffset=null) {
+		if (!is_null($xOffset))
+			$this->setBottomRightXOffset($xOffset);
+		if (!is_null($yOffset))
+			$this->setBottomRightYOffset($yOffset);
+
+		return $this;
+	}
+
+	/**
+	 * Get the offset position within the Bottom Right cell for the chart
+	 *
+	 * @return integer[]
+	 */
+	public function getBottomRightOffset() {
+		return array( 'X' => $this->_bottomRightXOffset,
+					  'Y' => $this->_bottomRightYOffset
+					);
+	}
+
+	public function setBottomRightXOffset($xOffset) {
+		$this->_bottomRightXOffset = $xOffset;
+
+		return $this;
+	}
+
+	public function getBottomRightXOffset() {
+		return $this->_bottomRightXOffset;
+	}
+
+	public function setBottomRightYOffset($yOffset) {
+		$this->_bottomRightYOffset = $yOffset;
+
+		return $this;
+	}
+
+	public function getBottomRightYOffset() {
+		return $this->_bottomRightYOffset;
+	}
+
+
+	public function refresh() {
+		if ($this->_worksheet !== NULL) {
+			$this->_plotArea->refresh($this->_worksheet);
+		}
+	}
+
+	public function render($outputDestination = null) {
+		$libraryName = PHPExcel_Settings::getChartRendererName();
+		if (is_null($libraryName)) {
+			return false;
+		}
+		//	Ensure that data series values are up-to-date before we render
+		$this->refresh();
+
+		$libraryPath = PHPExcel_Settings::getChartRendererPath();
+		$includePath = str_replace('\\','/',get_include_path());
+		$rendererPath = str_replace('\\','/',$libraryPath);
+		if (strpos($rendererPath,$includePath) === false) {
+			set_include_path(get_include_path() . PATH_SEPARATOR . $libraryPath);
+		}
+
+		$rendererName = 'PHPExcel_Chart_Renderer_'.$libraryName;
+		$renderer = new $rendererName($this);
+
+		if ($outputDestination == 'php://output') {
+			$outputDestination = null;
+		}
+		return $renderer->render($outputDestination);
+	}
+
+}

admin/helpers/PHPExcel/Chart/Axis.php

@@ -0,0 +1,584 @@
+<?php
+require_once 'Properties.php';
+
+/**
+ * Created by PhpStorm.
+ * User: Wiktor Trzonkowski
+ * Date: 6/17/14
+ * Time: 12:11 PM
+ */
+
+class PHPExcel_Chart_Axis extends
+  PHPExcel_Properties {
+
+  /**
+   * Axis Number
+   *
+   * @var  array of mixed
+   */
+
+  private
+      $_axis_number = array(
+      'format' => self::FORMAT_CODE_GENERAL,
+      'source_linked' => 1
+  );
+
+  /**
+   * Axis Options
+   *
+   * @var  array of mixed
+   */
+
+  private $_axis_options = array(
+      'minimum' => NULL,
+      'maximum' => NULL,
+      'major_unit' => NULL,
+      'minor_unit' => NULL,
+      'orientation' => self::ORIENTATION_NORMAL,
+      'minor_tick_mark' => self::TICK_MARK_NONE,
+      'major_tick_mark' => self::TICK_MARK_NONE,
+      'axis_labels' => self::AXIS_LABELS_NEXT_TO,
+      'horizontal_crosses' => self::HORIZONTAL_CROSSES_AUTOZERO,
+      'horizontal_crosses_value' => NULL
+  );
+
+  /**
+   * Fill Properties
+   *
+   * @var  array of mixed
+   */
+
+  private $_fill_properties = array(
+      'type' => self::EXCEL_COLOR_TYPE_ARGB,
+      'value' => NULL,
+      'alpha' => 0
+  );
+
+  /**
+   * Line Properties
+   *
+   * @var  array of mixed
+   */
+
+  private $_line_properties = array(
+      'type' => self::EXCEL_COLOR_TYPE_ARGB,
+      'value' => NULL,
+      'alpha' => 0
+  );
+
+  /**
+   * Line Style Properties
+   *
+   * @var  array of mixed
+   */
+
+  private $_line_style_properties = array(
+      'width' => '9525',
+      'compound' => self::LINE_STYLE_COMPOUND_SIMPLE,
+      'dash' => self::LINE_STYLE_DASH_SOLID,
+      'cap' => self::LINE_STYLE_CAP_FLAT,
+      'join' => self::LINE_STYLE_JOIN_BEVEL,
+      'arrow' => array(
+          'head' => array(
+              'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+              'size' => self::LINE_STYLE_ARROW_SIZE_5
+          ),
+          'end' => array(
+              'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+              'size' => self::LINE_STYLE_ARROW_SIZE_8
+          ),
+      )
+  );
+
+  /**
+   * Shadow Properties
+   *
+   * @var  array of mixed
+   */
+
+  private $_shadow_properties = array(
+      'presets' => self::SHADOW_PRESETS_NOSHADOW,
+      'effect' => NULL,
+      'color' => array(
+          'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+          'value' => 'black',
+          'alpha' => 40,
+      ),
+      'size' => array(
+          'sx' => NULL,
+          'sy' => NULL,
+          'kx' => NULL
+      ),
+      'blur' => NULL,
+      'direction' => NULL,
+      'distance' => NULL,
+      'algn' => NULL,
+      'rotWithShape' => NULL
+  );
+
+  /**
+   * Glow Properties
+   *
+   * @var  array of mixed
+   */
+
+  private $_glow_properties = array(
+      'size' => NULL,
+      'color' => array(
+          'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+          'value' => 'black',
+          'alpha' => 40
+      )
+  );
+
+  /**
+   * Soft Edge Properties
+   *
+   * @var  array of mixed
+   */
+
+  private $_soft_edges = array(
+      'size' => NULL
+  );
+
+  /**
+   * Get Series Data Type
+   *
+   * @return  string
+   */
+
+  public function setAxisNumberProperties($format_code) {
+    $this->_axis_number['format'] = (string) $format_code;
+    $this->_axis_number['source_linked'] = 0;
+  }
+
+  /**
+   * Get Axis Number Format Data Type
+   *
+   * @return  string
+   */
+
+  public function getAxisNumberFormat() {
+    return $this->_axis_number['format'];
+  }
+
+  /**
+   * Get Axis Number Source Linked
+   *
+   * @return  string
+   */
+
+  public function getAxisNumberSourceLinked() {
+    return (string) $this->_axis_number['source_linked'];
+  }
+
+  /**
+   * Set Axis Options Properties
+   *
+   * @param string $axis_labels
+   * @param string $horizontal_crosses_value
+   * @param string $horizontal_crosses
+   * @param string $axis_orientation
+   * @param string $major_tmt
+   * @param string $minor_tmt
+   * @param string $minimum
+   * @param string $maximum
+   * @param string $major_unit
+   * @param string $minor_unit
+   *
+   */
+
+  public function setAxisOptionsProperties($axis_labels, $horizontal_crosses_value = NULL, $horizontal_crosses = NULL,
+      $axis_orientation = NULL, $major_tmt = NULL, $minor_tmt = NULL, $minimum = NULL, $maximum = NULL, $major_unit = NULL,
+      $minor_unit = NULL) {
+
+    $this->_axis_options['axis_labels'] = (string) $axis_labels;
+    ($horizontal_crosses_value !== NULL)
+        ? $this->_axis_options['horizontal_crosses_value'] = (string) $horizontal_crosses_value : NULL;
+    ($horizontal_crosses !== NULL) ? $this->_axis_options['horizontal_crosses'] = (string) $horizontal_crosses : NULL;
+    ($axis_orientation !== NULL) ? $this->_axis_options['orientation'] = (string) $axis_orientation : NULL;
+    ($major_tmt !== NULL) ? $this->_axis_options['major_tick_mark'] = (string) $major_tmt : NULL;
+    ($minor_tmt !== NULL) ? $this->_axis_options['minor_tick_mark'] = (string) $minor_tmt : NULL;
+    ($minor_tmt !== NULL) ? $this->_axis_options['minor_tick_mark'] = (string) $minor_tmt : NULL;
+    ($minimum !== NULL) ? $this->_axis_options['minimum'] = (string) $minimum : NULL;
+    ($maximum !== NULL) ? $this->_axis_options['maximum'] = (string) $maximum : NULL;
+    ($major_unit !== NULL) ? $this->_axis_options['major_unit'] = (string) $major_unit : NULL;
+    ($minor_unit !== NULL) ? $this->_axis_options['minor_unit'] = (string) $minor_unit : NULL;
+  }
+
+  /**
+   * Get Axis Options Property
+   *
+   * @param string $property
+   *
+   * @return string
+   */
+
+  public function getAxisOptionsProperty($property) {
+    return $this->_axis_options[$property];
+  }
+
+  /**
+   * Set Axis Orientation Property
+   *
+   * @param string $orientation
+   *
+   */
+
+  public function setAxisOrientation($orientation) {
+    $this->orientation = (string) $orientation;
+  }
+
+  /**
+   * Set Fill Property
+   *
+   * @param string $color
+   * @param int $alpha
+   * @param string $type
+   *
+   */
+
+  public function setFillParameters($color, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_ARGB) {
+    $this->_fill_properties = $this->setColorProperties($color, $alpha, $type);
+  }
+
+  /**
+   * Set Line Property
+   *
+   * @param string $color
+   * @param int $alpha
+   * @param string $type
+   *
+   */
+
+  public function setLineParameters($color, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_ARGB) {
+    $this->_line_properties = $this->setColorProperties($color, $alpha, $type);
+  }
+
+  /**
+   * Get Fill Property
+   *
+   * @param string $property
+   *
+   * @return string
+   */
+
+  public function getFillProperty($property) {
+    return $this->_fill_properties[$property];
+  }
+
+  /**
+   * Get Line Property
+   *
+   * @param string $property
+   *
+   * @return string
+   */
+
+  public function getLineProperty($property) {
+    return $this->_line_properties[$property];
+  }
+
+  /**
+   * Set Line Style Properties
+   *
+   * @param float $line_width
+   * @param string $compound_type
+   * @param string $dash_type
+   * @param string $cap_type
+   * @param string $join_type
+   * @param string $head_arrow_type
+   * @param string $head_arrow_size
+   * @param string $end_arrow_type
+   * @param string $end_arrow_size
+   *
+   */
+
+  public function setLineStyleProperties($line_width = NULL, $compound_type = NULL,
+      $dash_type = NULL, $cap_type = NULL, $join_type = NULL, $head_arrow_type = NULL,
+      $head_arrow_size = NULL, $end_arrow_type = NULL, $end_arrow_size = NULL) {
+
+    (!is_null($line_width)) ? $this->_line_style_properties['width'] = $this->getExcelPointsWidth((float) $line_width)
+        : NULL;
+    (!is_null($compound_type)) ? $this->_line_style_properties['compound'] = (string) $compound_type : NULL;
+    (!is_null($dash_type)) ? $this->_line_style_properties['dash'] = (string) $dash_type : NULL;
+    (!is_null($cap_type)) ? $this->_line_style_properties['cap'] = (string) $cap_type : NULL;
+    (!is_null($join_type)) ? $this->_line_style_properties['join'] = (string) $join_type : NULL;
+    (!is_null($head_arrow_type)) ? $this->_line_style_properties['arrow']['head']['type'] = (string) $head_arrow_type
+        : NULL;
+    (!is_null($head_arrow_size)) ? $this->_line_style_properties['arrow']['head']['size'] = (string) $head_arrow_size
+        : NULL;
+    (!is_null($end_arrow_type)) ? $this->_line_style_properties['arrow']['end']['type'] = (string) $end_arrow_type
+        : NULL;
+    (!is_null($end_arrow_size)) ? $this->_line_style_properties['arrow']['end']['size'] = (string) $end_arrow_size
+        : NULL;
+  }
+
+  /**
+   * Get Line Style Property
+   *
+   * @param array|string $elements
+   *
+   * @return string
+   */
+
+  public function getLineStyleProperty($elements) {
+    return $this->getArrayElementsValue($this->_line_style_properties, $elements);
+  }
+
+  /**
+   * Get Line Style Arrow Excel Width
+   *
+   * @param string $arrow
+   *
+   * @return string
+   */
+
+  public function getLineStyleArrowWidth($arrow) {
+    return $this->getLineStyleArrowSize($this->_line_style_properties['arrow'][$arrow]['size'], 'w');
+  }
+
+  /**
+   * Get Line Style Arrow Excel Length
+   *
+   * @param string $arrow
+   *
+   * @return string
+   */
+
+  public function getLineStyleArrowLength($arrow) {
+    return $this->getLineStyleArrowSize($this->_line_style_properties['arrow'][$arrow]['size'], 'len');
+  }
+
+  /**
+   * Set Shadow Properties
+   *
+   * @param int $shadow_presets
+   * @param string $sh_color_value
+   * @param string $sh_color_type
+   * @param string $sh_color_alpha
+   * @param float $sh_blur
+   * @param int $sh_angle
+   * @param float $sh_distance
+   *
+   */
+
+  public function setShadowProperties($sh_presets, $sh_color_value = NULL, $sh_color_type = NULL, $sh_color_alpha = NULL, $sh_blur = NULL, $sh_angle = NULL, $sh_distance = NULL) {
+    $this
+        ->_setShadowPresetsProperties((int) $sh_presets)
+        ->_setShadowColor(
+            is_null($sh_color_value) ? $this->_shadow_properties['color']['value'] : $sh_color_value
+            , is_null($sh_color_alpha) ? (int) $this->_shadow_properties['color']['alpha'] : $sh_color_alpha
+            , is_null($sh_color_type) ? $this->_shadow_properties['color']['type'] : $sh_color_type)
+        ->_setShadowBlur($sh_blur)
+        ->_setShadowAngle($sh_angle)
+        ->_setShadowDistance($sh_distance);
+  }
+
+  /**
+   * Set Shadow Color
+   *
+   * @param int $shadow_presets
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setShadowPresetsProperties($shadow_presets) {
+    $this->_shadow_properties['presets'] = $shadow_presets;
+    $this->_setShadowProperiesMapValues($this->getShadowPresetsMap($shadow_presets));
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Properties from Maped Values
+   *
+   * @param array $properties_map
+   * @param * $reference
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setShadowProperiesMapValues(array $properties_map, &$reference = NULL) {
+    $base_reference = $reference;
+    foreach ($properties_map as $property_key => $property_val) {
+      if (is_array($property_val)) {
+        if ($reference === NULL) {
+          $reference = & $this->_shadow_properties[$property_key];
+        } else {
+          $reference = & $reference[$property_key];
+        }
+        $this->_setShadowProperiesMapValues($property_val, $reference);
+      } else {
+        if ($base_reference === NULL) {
+          $this->_shadow_properties[$property_key] = $property_val;
+        } else {
+          $reference[$property_key] = $property_val;
+        }
+      }
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Color
+   *
+   * @param string $color
+   * @param int $alpha
+   * @param string $type
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setShadowColor($color, $alpha, $type) {
+    $this->_shadow_properties['color'] = $this->setColorProperties($color, $alpha, $type);
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Blur
+   *
+   * @param float $blur
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setShadowBlur($blur) {
+    if ($blur !== NULL) {
+      $this->_shadow_properties['blur'] = (string) $this->getExcelPointsWidth($blur);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Angle
+   *
+   * @param int $angle
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setShadowAngle($angle) {
+    if ($angle !== NULL) {
+      $this->_shadow_properties['direction'] = (string) $this->getExcelPointsAngle($angle);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Distance
+   *
+   * @param float $distance
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setShadowDistance($distance) {
+    if ($distance !== NULL) {
+      $this->_shadow_properties['distance'] = (string) $this->getExcelPointsWidth($distance);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Get Glow Property
+   *
+   * @param float $size
+   * @param string $color_value
+   * @param int $color_alpha
+   * @param string $color_type
+   */
+
+  public function getShadowProperty($elements) {
+    return $this->getArrayElementsValue($this->_shadow_properties, $elements);
+  }
+
+  /**
+   * Set Glow Properties
+   *
+   * @param float $size
+   * @param string $color_value
+   * @param int $color_alpha
+   * @param string $color_type
+   */
+
+  public function setGlowProperties($size, $color_value = NULL, $color_alpha = NULL, $color_type = NULL) {
+    $this
+        ->_setGlowSize($size)
+        ->_setGlowColor(
+            is_null($color_value) ? $this->_glow_properties['color']['value'] : $color_value
+            , is_null($color_alpha) ? (int) $this->_glow_properties['color']['alpha'] : $color_alpha
+            , is_null($color_type) ? $this->_glow_properties['color']['type'] : $color_type);
+  }
+
+  /**
+   * Get Glow Property
+   *
+   * @param array|string $property
+   *
+   * @return string
+   */
+
+  public function getGlowProperty($property) {
+    return $this->getArrayElementsValue($this->_glow_properties, $property);
+  }
+
+  /**
+   * Set Glow Color
+   *
+   * @param float $size
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setGlowSize($size) {
+    if (!is_null($size)) {
+      $this->_glow_properties['size'] = $this->getExcelPointsWidth($size);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Glow Color
+   *
+   * @param string $color
+   * @param int $alpha
+   * @param string $type
+   *
+   * @return PHPExcel_Chart_Axis
+   */
+
+  private function _setGlowColor($color, $alpha, $type) {
+    $this->_glow_properties['color'] = $this->setColorProperties($color, $alpha, $type);
+
+    return $this;
+  }
+
+  /**
+   * Set Soft Edges Size
+   *
+   * @param float $size
+   */
+
+  public function setSoftEdges($size) {
+    if (!is_null($size)) {
+      $_soft_edges['size'] = (string) $this->getExcelPointsWidth($size);
+    }
+  }
+
+  /**
+   * Get Soft Edges Size
+   *
+   * @return string
+   */
+
+  public function getSoftEdgesSize() {
+    return $this->_soft_edges['size'];
+  }
+}

admin/helpers/PHPExcel/Chart/DataSeries.php

@@ -0,0 +1,365 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_DataSeries
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_DataSeries
+{
+
+	const TYPE_BARCHART			= 'barChart';
+	const TYPE_BARCHART_3D		= 'bar3DChart';
+	const TYPE_LINECHART		= 'lineChart';
+	const TYPE_LINECHART_3D		= 'line3DChart';
+	const TYPE_AREACHART		= 'areaChart';
+	const TYPE_AREACHART_3D		= 'area3DChart';
+	const TYPE_PIECHART			= 'pieChart';
+	const TYPE_PIECHART_3D		= 'pie3DChart';
+	const TYPE_DOUGHTNUTCHART	= 'doughnutChart';
+	const TYPE_DONUTCHART		= self::TYPE_DOUGHTNUTCHART;	//	Synonym
+	const TYPE_SCATTERCHART		= 'scatterChart';
+	const TYPE_SURFACECHART		= 'surfaceChart';
+	const TYPE_SURFACECHART_3D	= 'surface3DChart';
+	const TYPE_RADARCHART		= 'radarChart';
+	const TYPE_BUBBLECHART		= 'bubbleChart';
+	const TYPE_STOCKCHART		= 'stockChart';
+	const TYPE_CANDLECHART		= self::TYPE_STOCKCHART;	   //	Synonym
+
+	const GROUPING_CLUSTERED			= 'clustered';
+	const GROUPING_STACKED				= 'stacked';
+	const GROUPING_PERCENT_STACKED		= 'percentStacked';
+	const GROUPING_STANDARD				= 'standard';
+
+	const DIRECTION_BAR			= 'bar';
+	const DIRECTION_HORIZONTAL	= self::DIRECTION_BAR;
+	const DIRECTION_COL			= 'col';
+	const DIRECTION_COLUMN		= self::DIRECTION_COL;
+	const DIRECTION_VERTICAL	= self::DIRECTION_COL;
+
+	const STYLE_LINEMARKER		= 'lineMarker';
+	const STYLE_SMOOTHMARKER	= 'smoothMarker';
+	const STYLE_MARKER			= 'marker';
+	const STYLE_FILLED			= 'filled';
+
+
+	/**
+	 * Series Plot Type
+	 *
+	 * @var string
+	 */
+	private $_plotType = null;
+
+	/**
+	 * Plot Grouping Type
+	 *
+	 * @var boolean
+	 */
+	private $_plotGrouping = null;
+
+	/**
+	 * Plot Direction
+	 *
+	 * @var boolean
+	 */
+	private $_plotDirection = null;
+
+	/**
+	 * Plot Style
+	 *
+	 * @var string
+	 */
+	private $_plotStyle = null;
+
+	/**
+	 * Order of plots in Series
+	 *
+	 * @var array of integer
+	 */
+	private $_plotOrder = array();
+
+	/**
+	 * Plot Label
+	 *
+	 * @var array of PHPExcel_Chart_DataSeriesValues
+	 */
+	private $_plotLabel = array();
+
+	/**
+	 * Plot Category
+	 *
+	 * @var array of PHPExcel_Chart_DataSeriesValues
+	 */
+	private $_plotCategory = array();
+
+	/**
+	 * Smooth Line
+	 *
+	 * @var string
+	 */
+	private $_smoothLine = null;
+
+	/**
+	 * Plot Values
+	 *
+	 * @var array of PHPExcel_Chart_DataSeriesValues
+	 */
+	private $_plotValues = array();
+
+	/**
+	 * Create a new PHPExcel_Chart_DataSeries
+	 */
+	public function __construct($plotType = null, $plotGrouping = null, $plotOrder = array(), $plotLabel = array(), $plotCategory = array(), $plotValues = array(), $smoothLine = null, $plotStyle = null)
+	{
+		$this->_plotType = $plotType;
+		$this->_plotGrouping = $plotGrouping;
+		$this->_plotOrder = $plotOrder;
+		$keys = array_keys($plotValues);
+		$this->_plotValues = $plotValues;
+		if ((count($plotLabel) == 0) || (is_null($plotLabel[$keys[0]]))) {
+			$plotLabel[$keys[0]] = new PHPExcel_Chart_DataSeriesValues();
+		}
+
+		$this->_plotLabel = $plotLabel;
+		if ((count($plotCategory) == 0) || (is_null($plotCategory[$keys[0]]))) {
+			$plotCategory[$keys[0]] = new PHPExcel_Chart_DataSeriesValues();
+		}
+		$this->_plotCategory = $plotCategory;
+		$this->_smoothLine = $smoothLine;
+		$this->_plotStyle = $plotStyle;
+	}
+
+	/**
+	 * Get Plot Type
+	 *
+	 * @return string
+	 */
+	public function getPlotType() {
+		return $this->_plotType;
+	}
+
+	/**
+	 * Set Plot Type
+	 *
+	 * @param string $plotType
+     * @return PHPExcel_Chart_DataSeries
+	 */
+	public function setPlotType($plotType = '') {
+		$this->_plotType = $plotType;
+        return $this;
+	}
+
+	/**
+	 * Get Plot Grouping Type
+	 *
+	 * @return string
+	 */
+	public function getPlotGrouping() {
+		return $this->_plotGrouping;
+	}
+
+	/**
+	 * Set Plot Grouping Type
+	 *
+	 * @param string $groupingType
+     * @return PHPExcel_Chart_DataSeries
+	 */
+	public function setPlotGrouping($groupingType = null) {
+		$this->_plotGrouping = $groupingType;
+        return $this;
+	}
+
+	/**
+	 * Get Plot Direction
+	 *
+	 * @return string
+	 */
+	public function getPlotDirection() {
+		return $this->_plotDirection;
+	}
+
+	/**
+	 * Set Plot Direction
+	 *
+	 * @param string $plotDirection
+     * @return PHPExcel_Chart_DataSeries
+	 */
+	public function setPlotDirection($plotDirection = null) {
+		$this->_plotDirection = $plotDirection;
+        return $this;
+	}
+
+	/**
+	 * Get Plot Order
+	 *
+	 * @return string
+	 */
+	public function getPlotOrder() {
+		return $this->_plotOrder;
+	}
+
+	/**
+	 * Get Plot Labels
+	 *
+	 * @return array of PHPExcel_Chart_DataSeriesValues
+	 */
+	public function getPlotLabels() {
+		return $this->_plotLabel;
+	}
+
+	/**
+	 * Get Plot Label by Index
+	 *
+	 * @return PHPExcel_Chart_DataSeriesValues
+	 */
+	public function getPlotLabelByIndex($index) {
+		$keys = array_keys($this->_plotLabel);
+		if (in_array($index,$keys)) {
+			return $this->_plotLabel[$index];
+		} elseif(isset($keys[$index])) {
+			return $this->_plotLabel[$keys[$index]];
+		}
+		return false;
+	}
+
+	/**
+	 * Get Plot Categories
+	 *
+	 * @return array of PHPExcel_Chart_DataSeriesValues
+	 */
+	public function getPlotCategories() {
+		return $this->_plotCategory;
+	}
+
+	/**
+	 * Get Plot Category by Index
+	 *
+	 * @return PHPExcel_Chart_DataSeriesValues
+	 */
+	public function getPlotCategoryByIndex($index) {
+		$keys = array_keys($this->_plotCategory);
+		if (in_array($index,$keys)) {
+			return $this->_plotCategory[$index];
+		} elseif(isset($keys[$index])) {
+			return $this->_plotCategory[$keys[$index]];
+		}
+		return false;
+	}
+
+	/**
+	 * Get Plot Style
+	 *
+	 * @return string
+	 */
+	public function getPlotStyle() {
+		return $this->_plotStyle;
+	}
+
+	/**
+	 * Set Plot Style
+	 *
+	 * @param string $plotStyle
+     * @return PHPExcel_Chart_DataSeries
+	 */
+	public function setPlotStyle($plotStyle = null) {
+		$this->_plotStyle = $plotStyle;
+        return $this;
+	}
+
+	/**
+	 * Get Plot Values
+	 *
+	 * @return array of PHPExcel_Chart_DataSeriesValues
+	 */
+	public function getPlotValues() {
+		return $this->_plotValues;
+	}
+
+	/**
+	 * Get Plot Values by Index
+	 *
+	 * @return PHPExcel_Chart_DataSeriesValues
+	 */
+	public function getPlotValuesByIndex($index) {
+		$keys = array_keys($this->_plotValues);
+		if (in_array($index,$keys)) {
+			return $this->_plotValues[$index];
+		} elseif(isset($keys[$index])) {
+			return $this->_plotValues[$keys[$index]];
+		}
+		return false;
+	}
+
+	/**
+	 * Get Number of Plot Series
+	 *
+	 * @return integer
+	 */
+	public function getPlotSeriesCount() {
+		return count($this->_plotValues);
+	}
+
+	/**
+	 * Get Smooth Line
+	 *
+	 * @return boolean
+	 */
+	public function getSmoothLine() {
+		return $this->_smoothLine;
+	}
+
+	/**
+	 * Set Smooth Line
+	 *
+	 * @param boolean $smoothLine
+     * @return PHPExcel_Chart_DataSeries
+	 */
+	public function setSmoothLine($smoothLine = TRUE) {
+		$this->_smoothLine = $smoothLine;
+        return $this;
+	}
+
+	public function refresh(PHPExcel_Worksheet $worksheet) {
+	    foreach($this->_plotValues as $plotValues) {
+			if ($plotValues !== NULL)
+				$plotValues->refresh($worksheet, TRUE);
+		}
+		foreach($this->_plotLabel as $plotValues) {
+			if ($plotValues !== NULL)
+				$plotValues->refresh($worksheet, TRUE);
+		}
+		foreach($this->_plotCategory as $plotValues) {
+			if ($plotValues !== NULL)
+				$plotValues->refresh($worksheet, FALSE);
+		}
+	}
+
+}

admin/helpers/PHPExcel/Chart/DataSeriesValues.php

@@ -0,0 +1,327 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_DataSeriesValues
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_DataSeriesValues
+{
+
+	const DATASERIES_TYPE_STRING	= 'String';
+	const DATASERIES_TYPE_NUMBER	= 'Number';
+
+	private static $_dataTypeValues = array(
+		self::DATASERIES_TYPE_STRING,
+		self::DATASERIES_TYPE_NUMBER,
+	);
+
+	/**
+	 * Series Data Type
+	 *
+	 * @var	string
+	 */
+	private $_dataType = null;
+
+	/**
+	 * Series Data Source
+	 *
+	 * @var	string
+	 */
+	private $_dataSource = null;
+
+	/**
+	 * Format Code
+	 *
+	 * @var	string
+	 */
+	private $_formatCode = null;
+
+	/**
+	 * Series Point Marker
+	 *
+	 * @var	string
+	 */
+	private $_marker = null;
+
+	/**
+	 * Point Count (The number of datapoints in the dataseries)
+	 *
+	 * @var	integer
+	 */
+	private $_pointCount = 0;
+
+	/**
+	 * Data Values
+	 *
+	 * @var	array of mixed
+	 */
+	private $_dataValues = array();
+
+	/**
+	 * Create a new PHPExcel_Chart_DataSeriesValues object
+	 */
+	public function __construct($dataType = self::DATASERIES_TYPE_NUMBER, $dataSource = null, $formatCode = null, $pointCount = 0, $dataValues = array(), $marker = null)
+	{
+		$this->setDataType($dataType);
+		$this->_dataSource = $dataSource;
+		$this->_formatCode = $formatCode;
+		$this->_pointCount = $pointCount;
+		$this->_dataValues = $dataValues;
+		$this->_marker = $marker;
+	}
+
+	/**
+	 * Get Series Data Type
+	 *
+	 * @return	string
+	 */
+	public function getDataType() {
+		return $this->_dataType;
+	}
+
+	/**
+	 * Set Series Data Type
+	 *
+	 * @param	string	$dataType	Datatype of this data series
+	 *								Typical values are:
+	 *									PHPExcel_Chart_DataSeriesValues::DATASERIES_TYPE_STRING
+	 *										Normally used for axis point values
+	 *									PHPExcel_Chart_DataSeriesValues::DATASERIES_TYPE_NUMBER
+	 *										Normally used for chart data values
+	 * @return	PHPExcel_Chart_DataSeriesValues
+	 */
+	public function setDataType($dataType = self::DATASERIES_TYPE_NUMBER) {
+		if (!in_array($dataType, self::$_dataTypeValues)) {
+    		throw new PHPExcel_Chart_Exception('Invalid datatype for chart data series values');
+		}
+		$this->_dataType = $dataType;
+
+		return $this;
+	}
+
+	/**
+	 * Get Series Data Source (formula)
+	 *
+	 * @return	string
+	 */
+	public function getDataSource() {
+		return $this->_dataSource;
+	}
+
+	/**
+	 * Set Series Data Source (formula)
+	 *
+	 * @param	string	$dataSource
+	 * @return	PHPExcel_Chart_DataSeriesValues
+	 */
+	public function setDataSource($dataSource = null, $refreshDataValues = true) {
+		$this->_dataSource = $dataSource;
+
+		if ($refreshDataValues) {
+			//	TO DO
+		}
+
+		return $this;
+	}
+
+	/**
+	 * Get Point Marker
+	 *
+	 * @return string
+	 */
+	public function getPointMarker() {
+		return $this->_marker;
+	}
+
+	/**
+	 * Set Point Marker
+	 *
+	 * @param	string	$marker
+	 * @return	PHPExcel_Chart_DataSeriesValues
+	 */
+	public function setPointMarker($marker = null) {
+		$this->_marker = $marker;
+
+		return $this;
+	}
+
+	/**
+	 * Get Series Format Code
+	 *
+	 * @return	string
+	 */
+	public function getFormatCode() {
+		return $this->_formatCode;
+	}
+
+	/**
+	 * Set Series Format Code
+	 *
+	 * @param	string	$formatCode
+	 * @return	PHPExcel_Chart_DataSeriesValues
+	 */
+	public function setFormatCode($formatCode = null) {
+		$this->_formatCode = $formatCode;
+
+		return $this;
+	}
+
+	/**
+	 * Get Series Point Count
+	 *
+	 * @return	integer
+	 */
+	public function getPointCount() {
+		return $this->_pointCount;
+	}
+
+	/**
+	 * Identify if the Data Series is a multi-level or a simple series
+	 *
+	 * @return	boolean
+	 */
+	public function isMultiLevelSeries() {
+		if (count($this->_dataValues) > 0) {
+			return is_array($this->_dataValues[0]);
+		}
+		return null;
+	}
+
+	/**
+	 * Return the level count of a multi-level Data Series
+	 *
+	 * @return	boolean
+	 */
+	public function multiLevelCount() {
+		$levelCount = 0;
+		foreach($this->_dataValues as $dataValueSet) {
+			$levelCount = max($levelCount,count($dataValueSet));
+		}
+		return $levelCount;
+	}
+
+	/**
+	 * Get Series Data Values
+	 *
+	 * @return	array of mixed
+	 */
+	public function getDataValues() {
+		return $this->_dataValues;
+	}
+
+	/**
+	 * Get the first Series Data value
+	 *
+	 * @return	mixed
+	 */
+	public function getDataValue() {
+		$count = count($this->_dataValues);
+		if ($count == 0) {
+			return null;
+		} elseif ($count == 1) {
+			return $this->_dataValues[0];
+		}
+		return $this->_dataValues;
+	}
+
+	/**
+	 * Set Series Data Values
+	 *
+	 * @param	array	$dataValues
+	 * @param	boolean	$refreshDataSource
+	 *					TRUE - refresh the value of _dataSource based on the values of $dataValues
+	 *					FALSE - don't change the value of _dataSource
+	 * @return	PHPExcel_Chart_DataSeriesValues
+	 */
+	public function setDataValues($dataValues = array(), $refreshDataSource = TRUE) {
+		$this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($dataValues);
+		$this->_pointCount = count($dataValues);
+
+		if ($refreshDataSource) {
+			//	TO DO
+		}
+
+		return $this;
+	}
+
+	private function _stripNulls($var) {
+		return $var !== NULL;
+	}
+
+	public function refresh(PHPExcel_Worksheet $worksheet, $flatten = TRUE) {
+        if ($this->_dataSource !== NULL) {
+        	$calcEngine = PHPExcel_Calculation::getInstance($worksheet->getParent());
+			$newDataValues = PHPExcel_Calculation::_unwrapResult(
+			    $calcEngine->_calculateFormulaValue(
+			        '='.$this->_dataSource,
+			        NULL,
+			        $worksheet->getCell('A1')
+			    )
+			);
+			if ($flatten) {
+				$this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($newDataValues);
+				foreach($this->_dataValues as &$dataValue) {
+					if ((!empty($dataValue)) && ($dataValue[0] == '#')) {
+						$dataValue = 0.0;
+					}
+				}
+				unset($dataValue);
+			} else {
+				$cellRange = explode('!',$this->_dataSource);
+				if (count($cellRange) > 1) {
+					list(,$cellRange) = $cellRange;
+				}
+
+				$dimensions = PHPExcel_Cell::rangeDimension(str_replace('$','',$cellRange));
+				if (($dimensions[0] == 1) || ($dimensions[1] == 1)) {
+					$this->_dataValues = PHPExcel_Calculation_Functions::flattenArray($newDataValues);
+				} else {
+					$newArray = array_values(array_shift($newDataValues));
+					foreach($newArray as $i => $newDataSet) {
+						$newArray[$i] = array($newDataSet);
+					}
+
+					foreach($newDataValues as $newDataSet) {
+						$i = 0;
+						foreach($newDataSet as $newDataVal) {
+							array_unshift($newArray[$i++],$newDataVal);
+						}
+					}
+					$this->_dataValues = $newArray;
+				}
+			}
+			$this->_pointCount = count($this->_dataValues);
+		}
+
+	}
+
+}

admin/helpers/PHPExcel/Chart/Exception.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Chart
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_Exception
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Chart
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_Exception extends PHPExcel_Exception {
+	/**
+	 * Error handler callback
+	 *
+	 * @param mixed $code
+	 * @param mixed $string
+	 * @param mixed $file
+	 * @param mixed $line
+	 * @param mixed $context
+	 */
+	public static function errorHandlerCallback($code, $string, $file, $line, $context) {
+		$e = new self($string, $code);
+		$e->line = $line;
+		$e->file = $file;
+		throw $e;
+	}
+}

admin/helpers/PHPExcel/Chart/GridLines.php

@@ -0,0 +1,458 @@
+<?php
+require_once 'Properties.php';
+/**
+ * Created by PhpStorm.
+ * User: Wiktor Trzonkowski
+ * Date: 7/2/14
+ * Time: 2:36 PM
+ */
+
+class PHPExcel_Chart_Gridlines extends
+  PHPExcel_Properties {
+
+  /**
+   * Properties of Class:
+   * Object State (State for Minor Tick Mark) @var bool
+   * Line Properties @var  array of mixed
+   * Shadow Properties @var  array of mixed
+   * Glow Properties @var  array of mixed
+   * Soft Properties @var  array of mixed
+   *
+   */
+
+  private
+      $_object_state = FALSE,
+      $_line_properties = array(
+          'color' => array(
+              'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+              'value' => NULL,
+              'alpha' => 0
+          ),
+          'style' => array(
+              'width' => '9525',
+              'compound' => self::LINE_STYLE_COMPOUND_SIMPLE,
+              'dash' => self::LINE_STYLE_DASH_SOLID,
+              'cap' => self::LINE_STYLE_CAP_FLAT,
+              'join' => self::LINE_STYLE_JOIN_BEVEL,
+              'arrow' => array(
+                  'head' => array(
+                      'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                      'size' => self::LINE_STYLE_ARROW_SIZE_5
+                  ),
+                  'end' => array(
+                      'type' => self::LINE_STYLE_ARROW_TYPE_NOARROW,
+                      'size' => self::LINE_STYLE_ARROW_SIZE_8
+                  ),
+              )
+          )
+      ),
+      $_shadow_properties = array(
+          'presets' => self::SHADOW_PRESETS_NOSHADOW,
+          'effect' => NULL,
+          'color' => array(
+              'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+              'value' => 'black',
+              'alpha' => 85,
+          ),
+          'size' => array(
+              'sx' => NULL,
+              'sy' => NULL,
+              'kx' => NULL
+          ),
+          'blur' => NULL,
+          'direction' => NULL,
+          'distance' => NULL,
+          'algn' => NULL,
+          'rotWithShape' => NULL
+      ),
+      $_glow_properties = array(
+          'size' => NULL,
+          'color' => array(
+              'type' => self::EXCEL_COLOR_TYPE_STANDARD,
+              'value' => 'black',
+              'alpha' => 40
+          )
+      ),
+      $_soft_edges = array(
+          'size' => NULL
+      );
+
+  /**
+   * Get Object State
+   *
+   * @return bool
+   */
+
+  public function getObjectState() {
+    return $this->_object_state;
+  }
+
+  /**
+   * Change Object State to True
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _activateObject() {
+    $this->_object_state = TRUE;
+
+    return $this;
+  }
+
+  /**
+   * Set Line Color Properties
+   *
+   * @param string $value
+   * @param int $alpha
+   * @param string $type
+   */
+
+  public function setLineColorProperties($value, $alpha = 0, $type = self::EXCEL_COLOR_TYPE_STANDARD) {
+    $this
+        ->_activateObject()
+        ->_line_properties['color'] = $this->setColorProperties(
+        $value,
+        $alpha,
+        $type);
+  }
+
+  /**
+   * Set Line Color Properties
+   *
+   * @param float $line_width
+   * @param string $compound_type
+   * @param string $dash_type
+   * @param string $cap_type
+   * @param string $join_type
+   * @param string $head_arrow_type
+   * @param string $head_arrow_size
+   * @param string $end_arrow_type
+   * @param string $end_arrow_size
+   */
+
+  public function setLineStyleProperties($line_width = NULL, $compound_type = NULL, $dash_type = NULL, $cap_type = NULL, $join_type = NULL, $head_arrow_type = NULL, $head_arrow_size = NULL, $end_arrow_type = NULL, $end_arrow_size = NULL) {
+    $this->_activateObject();
+    (!is_null($line_width))
+        ? $this->_line_properties['style']['width'] = $this->getExcelPointsWidth((float) $line_width)
+        : NULL;
+    (!is_null($compound_type))
+        ? $this->_line_properties['style']['compound'] = (string) $compound_type
+        : NULL;
+    (!is_null($dash_type))
+        ? $this->_line_properties['style']['dash'] = (string) $dash_type
+        : NULL;
+    (!is_null($cap_type))
+        ? $this->_line_properties['style']['cap'] = (string) $cap_type
+        : NULL;
+    (!is_null($join_type))
+        ? $this->_line_properties['style']['join'] = (string) $join_type
+        : NULL;
+    (!is_null($head_arrow_type))
+        ? $this->_line_properties['style']['arrow']['head']['type'] = (string) $head_arrow_type
+        : NULL;
+    (!is_null($head_arrow_size))
+        ? $this->_line_properties['style']['arrow']['head']['size'] = (string) $head_arrow_size
+        : NULL;
+    (!is_null($end_arrow_type))
+        ? $this->_line_properties['style']['arrow']['end']['type'] = (string) $end_arrow_type
+        : NULL;
+    (!is_null($end_arrow_size))
+        ? $this->_line_properties['style']['arrow']['end']['size'] = (string) $end_arrow_size
+        : NULL;
+  }
+
+  /**
+   * Get Line Color Property
+   *
+   * @param string $parameter
+   *
+   * @return string
+   */
+
+  public function getLineColorProperty($parameter) {
+    return $this->_line_properties['color'][$parameter];
+  }
+
+  /**
+   * Get Line Style Property
+   *
+   * @param  array|string $elements
+   *
+   * @return string
+   */
+
+  public function getLineStyleProperty($elements) {
+    return $this->getArrayElementsValue($this->_line_properties['style'], $elements);
+  }
+
+  /**
+   * Set Glow Properties
+   *
+   * @param  float $size
+   * @param  string $color_value
+   * @param  int $color_alpha
+   * @param  string $color_type
+   *
+   */
+
+  public function setGlowProperties($size, $color_value = NULL, $color_alpha = NULL, $color_type = NULL) {
+    $this
+        ->_activateObject()
+        ->_setGlowSize($size)
+        ->_setGlowColor($color_value, $color_alpha, $color_type);
+  }
+
+  /**
+   * Get Glow Color Property
+   *
+   * @param string $property
+   *
+   * @return string
+   */
+
+  public function getGlowColor($property) {
+    return $this->_glow_properties['color'][$property];
+  }
+
+  /**
+   * Get Glow Size
+   *
+   * @return string
+   */
+
+  public function getGlowSize() {
+    return $this->_glow_properties['size'];
+  }
+
+  /**
+   * Set Glow Size
+   *
+   * @param float $size
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setGlowSize($size) {
+    $this->_glow_properties['size'] = $this->getExcelPointsWidth((float) $size);
+
+    return $this;
+  }
+
+  /**
+   * Set Glow Color
+   *
+   * @param string $color
+   * @param int $alpha
+   * @param string $type
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setGlowColor($color, $alpha, $type) {
+    if (!is_null($color)) {
+      $this->_glow_properties['color']['value'] = (string) $color;
+    }
+    if (!is_null($alpha)) {
+      $this->_glow_properties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
+    }
+    if (!is_null($type)) {
+      $this->_glow_properties['color']['type'] = (string) $type;
+    }
+
+    return $this;
+  }
+
+  /**
+   * Get Line Style Arrow Parameters
+   *
+   * @param string $arrow_selector
+   * @param string $property_selector
+   *
+   * @return string
+   */
+
+  public function getLineStyleArrowParameters($arrow_selector, $property_selector) {
+    return $this->getLineStyleArrowSize($this->_line_properties['style']['arrow'][$arrow_selector]['size'], $property_selector);
+  }
+
+  /**
+   * Set Shadow Properties
+   *
+   * @param int $sh_presets
+   * @param string $sh_color_value
+   * @param string $sh_color_type
+   * @param int $sh_color_alpha
+   * @param string $sh_blur
+   * @param int $sh_angle
+   * @param float $sh_distance
+   *
+   */
+
+  public function setShadowProperties($sh_presets, $sh_color_value = NULL, $sh_color_type = NULL, $sh_color_alpha = NULL, $sh_blur = NULL, $sh_angle = NULL, $sh_distance = NULL) {
+    $this
+        ->_activateObject()
+        ->_setShadowPresetsProperties((int) $sh_presets)
+        ->_setShadowColor(
+            is_null($sh_color_value) ? $this->_shadow_properties['color']['value'] : $sh_color_value
+            , is_null($sh_color_alpha) ? (int) $this->_shadow_properties['color']['alpha']
+                : $this->getTrueAlpha($sh_color_alpha)
+            , is_null($sh_color_type) ? $this->_shadow_properties['color']['type'] : $sh_color_type)
+        ->_setShadowBlur($sh_blur)
+        ->_setShadowAngle($sh_angle)
+        ->_setShadowDistance($sh_distance);
+  }
+
+  /**
+   * Set Shadow Presets Properties
+   *
+   * @param int $shadow_presets
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setShadowPresetsProperties($shadow_presets) {
+    $this->_shadow_properties['presets'] = $shadow_presets;
+    $this->_setShadowProperiesMapValues($this->getShadowPresetsMap($shadow_presets));
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Properties Values
+   *
+   * @param array $properties_map
+   * @param * $reference
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setShadowProperiesMapValues(array $properties_map, &$reference = NULL) {
+    $base_reference = $reference;
+    foreach ($properties_map as $property_key => $property_val) {
+      if (is_array($property_val)) {
+        if ($reference === NULL) {
+          $reference = & $this->_shadow_properties[$property_key];
+        } else {
+          $reference = & $reference[$property_key];
+        }
+        $this->_setShadowProperiesMapValues($property_val, $reference);
+      } else {
+        if ($base_reference === NULL) {
+          $this->_shadow_properties[$property_key] = $property_val;
+        } else {
+          $reference[$property_key] = $property_val;
+        }
+      }
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Color
+   *
+   * @param string $color
+   * @param int $alpha
+   * @param string $type
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setShadowColor($color, $alpha, $type) {
+    if (!is_null($color)) {
+      $this->_shadow_properties['color']['value'] = (string) $color;
+    }
+    if (!is_null($alpha)) {
+      $this->_shadow_properties['color']['alpha'] = $this->getTrueAlpha((int) $alpha);
+    }
+    if (!is_null($type)) {
+      $this->_shadow_properties['color']['type'] = (string) $type;
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Blur
+   *
+   * @param float $blur
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setShadowBlur($blur) {
+    if ($blur !== NULL) {
+      $this->_shadow_properties['blur'] = (string) $this->getExcelPointsWidth($blur);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Angle
+   *
+   * @param int $angle
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setShadowAngle($angle) {
+    if ($angle !== NULL) {
+      $this->_shadow_properties['direction'] = (string) $this->getExcelPointsAngle($angle);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Set Shadow Distance
+   *
+   * @param float $distance
+   *
+   * @return PHPExcel_Chart_Gridlines
+   */
+
+  private function _setShadowDistance($distance) {
+    if ($distance !== NULL) {
+      $this->_shadow_properties['distance'] = (string) $this->getExcelPointsWidth($distance);
+    }
+
+    return $this;
+  }
+
+  /**
+   * Get Shadow Property
+   *
+   * @param string $elements
+   * @param array $elements
+   *
+   * @return string
+   */
+
+  public function getShadowProperty($elements) {
+    return $this->getArrayElementsValue($this->_shadow_properties, $elements);
+  }
+
+  /**
+   * Set Soft Edges Size
+   *
+   * @param float $size
+   */
+
+  public function setSoftEdgesSize($size) {
+    if (!is_null($size)) {
+      $this->_activateObject();
+      $_soft_edges['size'] = (string) $this->getExcelPointsWidth($size);
+    }
+  }
+
+  /**
+   * Get Soft Edges Size
+   *
+   * @return string
+   */
+
+  public function getSoftEdgesSize() {
+    return $this->_soft_edges['size'];
+  }
+}

admin/helpers/PHPExcel/Chart/Layout.php

@@ -0,0 +1,445 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_Layout
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_Layout
+{
+	/**
+	 * layoutTarget
+	 *
+	 * @var string
+	 */
+	private $_layoutTarget = NULL;
+
+	/**
+	 * X Mode
+	 *
+	 * @var string
+	 */
+	private $_xMode		= NULL;
+
+	/**
+	 * Y Mode
+	 *
+	 * @var string
+	 */
+	private $_yMode		= NULL;
+
+	/**
+	 * X-Position
+	 *
+	 * @var float
+	 */
+	private $_xPos		= NULL;
+
+	/**
+	 * Y-Position
+	 *
+	 * @var float
+	 */
+	private $_yPos		= NULL;
+
+	/**
+	 * width
+	 *
+	 * @var float
+	 */
+	private $_width		= NULL;
+
+	/**
+	 * height
+	 *
+	 * @var float
+	 */
+	private $_height	= NULL;
+
+	/**
+	 * show legend key
+	 * Specifies that legend keys should be shown in data labels
+	 *
+	 * @var boolean
+	 */
+	private $_showLegendKey	= NULL;
+
+	/**
+	 * show value
+	 * Specifies that the value should be shown in a data label.
+	 *
+	 * @var boolean
+	 */
+	private $_showVal	= NULL;
+
+	/**
+	 * show category name
+	 * Specifies that the category name should be shown in the data label.
+	 *
+	 * @var boolean
+	 */
+	private $_showCatName	= NULL;
+
+	/**
+	 * show data series name
+	 * Specifies that the series name should be shown in the data label.
+	 *
+	 * @var boolean
+	 */
+	private $_showSerName	= NULL;
+
+	/**
+	 * show percentage
+	 * Specifies that the percentage should be shown in the data label.
+	 *
+	 * @var boolean
+	 */
+	private $_showPercent	= NULL;
+
+	/**
+	 * show bubble size
+	 *
+	 * @var boolean
+	 */
+	private $_showBubbleSize	= NULL;
+
+	/**
+	 * show leader lines
+	 * Specifies that leader lines should be shown for the data label.
+	 *
+	 * @var boolean
+	 */
+	private $_showLeaderLines	= NULL;
+
+
+	/**
+	 * Create a new PHPExcel_Chart_Layout
+	 */
+	public function __construct($layout=array())
+	{
+		if (isset($layout['layoutTarget']))	{ $this->_layoutTarget	= $layout['layoutTarget'];	}
+		if (isset($layout['xMode']))		{ $this->_xMode			= $layout['xMode'];			}
+		if (isset($layout['yMode']))		{ $this->_yMode			= $layout['yMode'];			}
+		if (isset($layout['x']))			{ $this->_xPos			= (float) $layout['x'];		}
+		if (isset($layout['y']))			{ $this->_yPos			= (float) $layout['y'];		}
+		if (isset($layout['w']))			{ $this->_width			= (float) $layout['w'];		}
+		if (isset($layout['h']))			{ $this->_height		= (float) $layout['h'];		}
+	}
+
+	/**
+	 * Get Layout Target
+	 *
+	 * @return string
+	 */
+	public function getLayoutTarget() {
+		return $this->_layoutTarget;
+	}
+
+	/**
+	 * Set Layout Target
+	 *
+	 * @param Layout Target $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setLayoutTarget($value) {
+		$this->_layoutTarget = $value;
+        return $this;
+	}
+
+	/**
+	 * Get X-Mode
+	 *
+	 * @return string
+	 */
+	public function getXMode() {
+		return $this->_xMode;
+	}
+
+	/**
+	 * Set X-Mode
+	 *
+	 * @param X-Mode $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setXMode($value) {
+		$this->_xMode = $value;
+        return $this;
+	}
+
+	/**
+	 * Get Y-Mode
+	 *
+	 * @return string
+	 */
+	public function getYMode() {
+		return $this->_yMode;
+	}
+
+	/**
+	 * Set Y-Mode
+	 *
+	 * @param Y-Mode $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setYMode($value) {
+		$this->_yMode = $value;
+        return $this;
+	}
+
+	/**
+	 * Get X-Position
+	 *
+	 * @return number
+	 */
+	public function getXPosition() {
+		return $this->_xPos;
+	}
+
+	/**
+	 * Set X-Position
+	 *
+	 * @param X-Position $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setXPosition($value) {
+		$this->_xPos = $value;
+        return $this;
+	}
+
+	/**
+	 * Get Y-Position
+	 *
+	 * @return number
+	 */
+	public function getYPosition() {
+		return $this->_yPos;
+	}
+
+	/**
+	 * Set Y-Position
+	 *
+	 * @param Y-Position $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setYPosition($value) {
+		$this->_yPos = $value;
+        return $this;
+	}
+
+	/**
+	 * Get Width
+	 *
+	 * @return number
+	 */
+	public function getWidth() {
+		return $this->_width;
+	}
+
+	/**
+	 * Set Width
+	 *
+	 * @param Width $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setWidth($value) {
+		$this->_width = $value;
+        return $this;
+	}
+
+	/**
+	 * Get Height
+	 *
+	 * @return number
+	 */
+	public function getHeight() {
+		return $this->_height;
+	}
+
+	/**
+	 * Set Height
+	 *
+	 * @param Height $value
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setHeight($value) {
+		$this->_height = $value;
+        return $this;
+	}
+
+
+	/**
+	 * Get show legend key
+	 *
+	 * @return boolean
+	 */
+	public function getShowLegendKey() {
+		return $this->_showLegendKey;
+	}
+
+	/**
+	 * Set show legend key
+	 * Specifies that legend keys should be shown in data labels.
+	 *
+	 * @param boolean $value		Show legend key
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowLegendKey($value) {
+		$this->_showLegendKey = $value;
+        return $this;
+	}
+
+	/**
+	 * Get show value
+	 *
+	 * @return boolean
+	 */
+	public function getShowVal() {
+		return $this->_showVal;
+	}
+
+	/**
+	 * Set show val
+	 * Specifies that the value should be shown in data labels.
+	 *
+	 * @param boolean $value		Show val
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowVal($value) {
+		$this->_showVal = $value;
+        return $this;
+	}
+
+	/**
+	 * Get show category name
+	 *
+	 * @return boolean
+	 */
+	public function getShowCatName() {
+		return $this->_showCatName;
+	}
+
+	/**
+	 * Set show cat name
+	 * Specifies that the category name should be shown in data labels.
+	 *
+	 * @param boolean $value		Show cat name
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowCatName($value) {
+		$this->_showCatName = $value;
+        return $this;
+	}
+
+	/**
+	 * Get show data series name
+	 *
+	 * @return boolean
+	 */
+	public function getShowSerName() {
+		return $this->_showSerName;
+	}
+
+	/**
+	 * Set show ser name
+	 * Specifies that the series name should be shown in data labels.
+	 *
+	 * @param boolean $value		Show series name
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowSerName($value) {
+		$this->_showSerName = $value;
+        return $this;
+	}
+
+	/**
+	 * Get show percentage
+	 *
+	 * @return boolean
+	 */
+	public function getShowPercent() {
+		return $this->_showPercent;
+	}
+
+	/**
+	 * Set show percentage
+	 * Specifies that the percentage should be shown in data labels.
+	 *
+	 * @param boolean $value		Show percentage
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowPercent($value) {
+		$this->_showPercent = $value;
+        return $this;
+	}
+
+	/**
+	 * Get show bubble size
+	 *
+	 * @return boolean
+	 */
+	public function getShowBubbleSize() {
+		return $this->_showBubbleSize;
+	}
+
+	/**
+	 * Set show bubble size
+	 * Specifies that the bubble size should be shown in data labels.
+	 *
+	 * @param boolean $value		Show bubble size
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowBubbleSize($value) {
+		$this->_showBubbleSize = $value;
+        return $this;
+	}
+
+	/**
+	 * Get show leader lines
+	 *
+	 * @return boolean
+	 */
+	public function getShowLeaderLines() {
+		return $this->_showLeaderLines;
+	}
+
+	/**
+	 * Set show leader lines
+	 * Specifies that leader lines should be shown in data labels.
+	 *
+	 * @param boolean $value		Show leader lines
+     * @return PHPExcel_Chart_Layout
+	 */
+	public function setShowLeaderLines($value) {
+		$this->_showLeaderLines = $value;
+        return $this;
+	}
+
+}

admin/helpers/PHPExcel/Chart/Legend.php

@@ -0,0 +1,171 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_Legend
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_Legend
+{
+	/** Legend positions */
+	const xlLegendPositionBottom	= -4107;	//	Below the chart.
+	const xlLegendPositionCorner	= 2;		//	In the upper right-hand corner of the chart border.
+	const xlLegendPositionCustom	= -4161;	//	A custom position.
+	const xlLegendPositionLeft		= -4131;	//	Left of the chart.
+	const xlLegendPositionRight		= -4152;	//	Right of the chart.
+	const xlLegendPositionTop		= -4160;	//	Above the chart.
+
+	const POSITION_RIGHT	= 'r';
+	const POSITION_LEFT		= 'l';
+	const POSITION_BOTTOM	= 'b';
+	const POSITION_TOP		= 't';
+	const POSITION_TOPRIGHT	= 'tr';
+
+	private static $_positionXLref = array( self::xlLegendPositionBottom	=> self::POSITION_BOTTOM,
+											self::xlLegendPositionCorner	=> self::POSITION_TOPRIGHT,
+											self::xlLegendPositionCustom	=> '??',
+											self::xlLegendPositionLeft		=> self::POSITION_LEFT,
+											self::xlLegendPositionRight		=> self::POSITION_RIGHT,
+											self::xlLegendPositionTop		=> self::POSITION_TOP
+										  );
+
+	/**
+	 * Legend position
+	 *
+	 * @var	string
+	 */
+	private $_position = self::POSITION_RIGHT;
+
+	/**
+	 * Allow overlay of other elements?
+	 *
+	 * @var	boolean
+	 */
+	private $_overlay = TRUE;
+
+	/**
+	 * Legend Layout
+	 *
+	 * @var	PHPExcel_Chart_Layout
+	 */
+	private $_layout = NULL;
+
+
+	/**
+	 *	Create a new PHPExcel_Chart_Legend
+	 */
+	public function __construct($position = self::POSITION_RIGHT, PHPExcel_Chart_Layout $layout = NULL, $overlay = FALSE)
+	{
+		$this->setPosition($position);
+		$this->_layout = $layout;
+		$this->setOverlay($overlay);
+	}
+
+	/**
+	 * Get legend position as an excel string value
+	 *
+	 * @return	string
+	 */
+	public function getPosition() {
+		return $this->_position;
+	}
+
+	/**
+	 * Get legend position using an excel string value
+	 *
+	 * @param	string	$position
+	 */
+	public function setPosition($position = self::POSITION_RIGHT) {
+		if (!in_array($position,self::$_positionXLref)) {
+			return false;
+		}
+
+		$this->_position = $position;
+		return true;
+	}
+
+	/**
+	 * Get legend position as an Excel internal numeric value
+	 *
+	 * @return	number
+	 */
+	public function getPositionXL() {
+		return array_search($this->_position,self::$_positionXLref);
+	}
+
+	/**
+	 * Set legend position using an Excel internal numeric value
+	 *
+	 * @param	number	$positionXL
+	 */
+	public function setPositionXL($positionXL = self::xlLegendPositionRight) {
+		if (!array_key_exists($positionXL,self::$_positionXLref)) {
+			return false;
+		}
+
+		$this->_position = self::$_positionXLref[$positionXL];
+		return true;
+	}
+
+	/**
+	 * Get allow overlay of other elements?
+	 *
+	 * @return	boolean
+	 */
+	public function getOverlay() {
+		return $this->_overlay;
+	}
+
+	/**
+	 * Set allow overlay of other elements?
+	 *
+	 * @param	boolean	$overlay
+	 * @return	boolean
+	 */
+	public function setOverlay($overlay = FALSE) {
+		if (!is_bool($overlay)) {
+			return false;
+		}
+
+		$this->_overlay = $overlay;
+		return true;
+	}
+
+	/**
+	 * Get Layout
+	 *
+	 * @return PHPExcel_Chart_Layout
+	 */
+	public function getLayout() {
+		return $this->_layout;
+	}
+
+}

admin/helpers/PHPExcel/Chart/PlotArea.php

@@ -0,0 +1,128 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_PlotArea
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_PlotArea
+{
+	/**
+	 * PlotArea Layout
+	 *
+	 * @var PHPExcel_Chart_Layout
+	 */
+	private $_layout = null;
+
+	/**
+	 * Plot Series
+	 *
+	 * @var array of PHPExcel_Chart_DataSeries
+	 */
+	private $_plotSeries = array();
+
+	/**
+	 * Create a new PHPExcel_Chart_PlotArea
+	 */
+	public function __construct(PHPExcel_Chart_Layout $layout = null, $plotSeries = array())
+	{
+		$this->_layout = $layout;
+		$this->_plotSeries = $plotSeries;
+	}
+
+	/**
+	 * Get Layout
+	 *
+	 * @return PHPExcel_Chart_Layout
+	 */
+	public function getLayout() {
+		return $this->_layout;
+	}
+
+	/**
+	 * Get Number of Plot Groups
+	 *
+	 * @return array of PHPExcel_Chart_DataSeries
+	 */
+	public function getPlotGroupCount() {
+		return count($this->_plotSeries);
+	}
+
+	/**
+	 * Get Number of Plot Series
+	 *
+	 * @return integer
+	 */
+	public function getPlotSeriesCount() {
+		$seriesCount = 0;
+		foreach($this->_plotSeries as $plot) {
+			$seriesCount += $plot->getPlotSeriesCount();
+		}
+		return $seriesCount;
+	}
+
+	/**
+	 * Get Plot Series
+	 *
+	 * @return array of PHPExcel_Chart_DataSeries
+	 */
+	public function getPlotGroup() {
+		return $this->_plotSeries;
+	}
+
+	/**
+	 * Get Plot Series by Index
+	 *
+	 * @return PHPExcel_Chart_DataSeries
+	 */
+	public function getPlotGroupByIndex($index) {
+		return $this->_plotSeries[$index];
+	}
+
+	/**
+	 * Set Plot Series
+	 *
+	 * @param [PHPExcel_Chart_DataSeries]
+     * @return PHPExcel_Chart_PlotArea
+	 */
+	public function setPlotSeries($plotSeries = array()) {
+		$this->_plotSeries = $plotSeries;
+        
+        return $this;
+	}
+
+	public function refresh(PHPExcel_Worksheet $worksheet) {
+	    foreach($this->_plotSeries as $plotSeries) {
+			$plotSeries->refresh($worksheet);
+		}
+	}
+
+}

admin/helpers/PHPExcel/Chart/Properties.php

@@ -0,0 +1,359 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: nhw2h8s
+ * Date: 7/2/14
+ * Time: 5:45 PM
+ */
+
+abstract class PHPExcel_Properties {
+
+  const
+      EXCEL_COLOR_TYPE_STANDARD = 'prstClr',
+      EXCEL_COLOR_TYPE_SCHEME = 'schemeClr',
+      EXCEL_COLOR_TYPE_ARGB = 'srgbClr';
+
+  const
+      AXIS_LABELS_LOW = 'low',
+      AXIS_LABELS_HIGH = 'high',
+      AXIS_LABELS_NEXT_TO = 'nextTo',
+      AXIS_LABELS_NONE = 'none';
+
+  const
+      TICK_MARK_NONE = 'none',
+      TICK_MARK_INSIDE = 'in',
+      TICK_MARK_OUTSIDE = 'out',
+      TICK_MARK_CROSS = 'cross';
+
+  const
+      HORIZONTAL_CROSSES_AUTOZERO = 'autoZero',
+      HORIZONTAL_CROSSES_MAXIMUM = 'max';
+
+  const
+      FORMAT_CODE_GENERAL = 'General',
+      FORMAT_CODE_NUMBER = '#,##0.00',
+      FORMAT_CODE_CURRENCY = '$#,##0.00',
+      FORMAT_CODE_ACCOUNTING = '_($* #,##0.00_);_($* (#,##0.00);_($* "-"??_);_(@_)',
+      FORMAT_CODE_DATE = 'm/d/yyyy',
+      FORMAT_CODE_TIME = '[$-F400]h:mm:ss AM/PM',
+      FORMAT_CODE_PERCENTAGE = '0.00%',
+      FORMAT_CODE_FRACTION = '# ?/?',
+      FORMAT_CODE_SCIENTIFIC = '0.00E+00',
+      FORMAT_CODE_TEXT = '@',
+      FORMAT_CODE_SPECIAL = '00000';
+
+  const
+      ORIENTATION_NORMAL = 'minMax',
+      ORIENTATION_REVERSED = 'maxMin';
+
+  const
+      LINE_STYLE_COMPOUND_SIMPLE = 'sng',
+      LINE_STYLE_COMPOUND_DOUBLE = 'dbl',
+      LINE_STYLE_COMPOUND_THICKTHIN = 'thickThin',
+      LINE_STYLE_COMPOUND_THINTHICK = 'thinThick',
+      LINE_STYLE_COMPOUND_TRIPLE = 'tri',
+
+      LINE_STYLE_DASH_SOLID = 'solid',
+      LINE_STYLE_DASH_ROUND_DOT = 'sysDot',
+      LINE_STYLE_DASH_SQUERE_DOT = 'sysDash',
+      LINE_STYPE_DASH_DASH = 'dash',
+      LINE_STYLE_DASH_DASH_DOT = 'dashDot',
+      LINE_STYLE_DASH_LONG_DASH = 'lgDash',
+      LINE_STYLE_DASH_LONG_DASH_DOT = 'lgDashDot',
+      LINE_STYLE_DASH_LONG_DASH_DOT_DOT = 'lgDashDotDot',
+
+      LINE_STYLE_CAP_SQUARE = 'sq',
+      LINE_STYLE_CAP_ROUND = 'rnd',
+      LINE_STYLE_CAP_FLAT = 'flat',
+
+      LINE_STYLE_JOIN_ROUND = 'bevel',
+      LINE_STYLE_JOIN_MITER = 'miter',
+      LINE_STYLE_JOIN_BEVEL = 'bevel',
+
+      LINE_STYLE_ARROW_TYPE_NOARROW = NULL,
+      LINE_STYLE_ARROW_TYPE_ARROW = 'triangle',
+      LINE_STYLE_ARROW_TYPE_OPEN = 'arrow',
+      LINE_STYLE_ARROW_TYPE_STEALTH = 'stealth',
+      LINE_STYLE_ARROW_TYPE_DIAMOND = 'diamond',
+      LINE_STYLE_ARROW_TYPE_OVAL = 'oval',
+
+      LINE_STYLE_ARROW_SIZE_1 = 1,
+      LINE_STYLE_ARROW_SIZE_2 = 2,
+      LINE_STYLE_ARROW_SIZE_3 = 3,
+      LINE_STYLE_ARROW_SIZE_4 = 4,
+      LINE_STYLE_ARROW_SIZE_5 = 5,
+      LINE_STYLE_ARROW_SIZE_6 = 6,
+      LINE_STYLE_ARROW_SIZE_7 = 7,
+      LINE_STYLE_ARROW_SIZE_8 = 8,
+      LINE_STYLE_ARROW_SIZE_9 = 9;
+
+  const
+      SHADOW_PRESETS_NOSHADOW = NULL,
+      SHADOW_PRESETS_OUTER_BOTTTOM_RIGHT = 1,
+      SHADOW_PRESETS_OUTER_BOTTOM = 2,
+      SHADOW_PRESETS_OUTER_BOTTOM_LEFT = 3,
+      SHADOW_PRESETS_OUTER_RIGHT = 4,
+      SHADOW_PRESETS_OUTER_CENTER = 5,
+      SHADOW_PRESETS_OUTER_LEFT = 6,
+      SHADOW_PRESETS_OUTER_TOP_RIGHT = 7,
+      SHADOW_PRESETS_OUTER_TOP = 8,
+      SHADOW_PRESETS_OUTER_TOP_LEFT = 9,
+      SHADOW_PRESETS_INNER_BOTTTOM_RIGHT = 10,
+      SHADOW_PRESETS_INNER_BOTTOM = 11,
+      SHADOW_PRESETS_INNER_BOTTOM_LEFT = 12,
+      SHADOW_PRESETS_INNER_RIGHT = 13,
+      SHADOW_PRESETS_INNER_CENTER = 14,
+      SHADOW_PRESETS_INNER_LEFT = 15,
+      SHADOW_PRESETS_INNER_TOP_RIGHT = 16,
+      SHADOW_PRESETS_INNER_TOP = 17,
+      SHADOW_PRESETS_INNER_TOP_LEFT = 18,
+      SHADOW_PRESETS_PERSPECTIVE_BELOW = 19,
+      SHADOW_PRESETS_PERSPECTIVE_UPPER_RIGHT = 20,
+      SHADOW_PRESETS_PERSPECTIVE_UPPER_LEFT = 21,
+      SHADOW_PRESETS_PERSPECTIVE_LOWER_RIGHT = 22,
+      SHADOW_PRESETS_PERSPECTIVE_LOWER_LEFT = 23;
+
+  protected function  getExcelPointsWidth($width) {
+    return $width * 12700;
+  }
+
+  protected function getExcelPointsAngle($angle) {
+    return $angle * 60000;
+  }
+
+  protected function getTrueAlpha($alpha) {
+    return (string) 100 - $alpha . '000';
+  }
+
+  protected function setColorProperties($color, $alpha, $type) {
+    return array(
+        'type' => (string) $type,
+        'value' => (string) $color,
+        'alpha' => (string) $this->getTrueAlpha($alpha)
+    );
+  }
+
+  protected function getLineStyleArrowSize($array_selector, $array_kay_selector) {
+    $sizes = array(
+        1 => array('w' => 'sm', 'len' => 'sm'),
+        2 => array('w' => 'sm', 'len' => 'med'),
+        3 => array('w' => 'sm', 'len' => 'lg'),
+        4 => array('w' => 'med', 'len' => 'sm'),
+        5 => array('w' => 'med', 'len' => 'med'),
+        6 => array('w' => 'med', 'len' => 'lg'),
+        7 => array('w' => 'lg', 'len' => 'sm'),
+        8 => array('w' => 'lg', 'len' => 'med'),
+        9 => array('w' => 'lg', 'len' => 'lg')
+    );
+
+    return $sizes[$array_selector][$array_kay_selector];
+  }
+
+  protected function getShadowPresetsMap($shadow_presets_option) {
+    $presets_options = array(
+      //OUTER
+      1 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '2700000',
+          'algn' => 'tl',
+          'rotWithShape' => '0'
+      ),
+      2 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '5400000',
+          'algn' => 't',
+          'rotWithShape' => '0'
+      ),
+      3 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '8100000',
+          'algn' => 'tr',
+          'rotWithShape' => '0'
+      ),
+      4 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'algn' => 'l',
+          'rotWithShape' => '0'
+      ),
+      5 => array(
+          'effect' => 'outerShdw',
+          'size' => array(
+              'sx' => '102000',
+              'sy' => '102000'
+          )
+          ,
+          'blur' => '63500',
+          'distance' => '38100',
+          'algn' => 'ctr',
+          'rotWithShape' => '0'
+      ),
+      6 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '10800000',
+          'algn' => 'r',
+          'rotWithShape' => '0'
+      ),
+      7 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '18900000',
+          'algn' => 'bl',
+          'rotWithShape' => '0'
+      ),
+      8 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '16200000',
+          'rotWithShape' => '0'
+      ),
+      9 => array(
+          'effect' => 'outerShdw',
+          'blur' => '50800',
+          'distance' => '38100',
+          'direction' => '13500000',
+          'algn' => 'br',
+          'rotWithShape' => '0'
+      ),
+      //INNER
+      10 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '2700000',
+      ),
+      11 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '5400000',
+      ),
+      12 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '8100000',
+      ),
+      13 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+      ),
+      14 => array(
+          'effect' => 'innerShdw',
+          'blur' => '114300',
+      ),
+      15 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '10800000',
+      ),
+      16 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '18900000',
+      ),
+      17 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '16200000',
+      ),
+      18 => array(
+          'effect' => 'innerShdw',
+          'blur' => '63500',
+          'distance' => '50800',
+          'direction' => '13500000',
+      ),
+      //perspective
+      19 => array(
+          'effect' => 'outerShdw',
+          'blur' => '152400',
+          'distance' => '317500',
+          'size' => array(
+              'sx' => '90000',
+              'sy' => '-19000',
+          ),
+          'direction' => '5400000',
+          'rotWithShape' => '0',
+      ),
+      20 => array(
+          'effect' => 'outerShdw',
+          'blur' => '76200',
+          'direction' => '18900000',
+          'size' => array(
+              'sy' => '23000',
+              'kx' => '-1200000',
+          ),
+          'algn' => 'bl',
+          'rotWithShape' => '0',
+      ),
+      21 => array(
+          'effect' => 'outerShdw',
+          'blur' => '76200',
+          'direction' => '13500000',
+          'size' => array(
+              'sy' => '23000',
+              'kx' => '1200000',
+          ),
+          'algn' => 'br',
+          'rotWithShape' => '0',
+      ),
+      22 => array(
+          'effect' => 'outerShdw',
+          'blur' => '76200',
+          'distance' => '12700',
+          'direction' => '2700000',
+          'size' => array(
+              'sy' => '-23000',
+              'kx' => '-800400',
+          ),
+          'algn' => 'bl',
+          'rotWithShape' => '0',
+      ),
+      23 => array(
+          'effect' => 'outerShdw',
+          'blur' => '76200',
+          'distance' => '12700',
+          'direction' => '8100000',
+          'size' => array(
+              'sy' => '-23000',
+              'kx' => '800400',
+          ),
+          'algn' => 'br',
+          'rotWithShape' => '0',
+      ),
+    );
+
+    return $presets_options[$shadow_presets_option];
+  }
+
+  protected function getArrayElementsValue($properties, $elements) {
+    $reference = & $properties;
+    if (!is_array($elements)) {
+      return $reference[$elements];
+    } else {
+      foreach ($elements as $keys) {
+        $reference = & $reference[$keys];
+      }
+
+      return $reference;
+    }
+
+    return $this;
+  }
+
+} 

admin/helpers/PHPExcel/Chart/Renderer/PHP Charting Libraries.txt

@@ -0,0 +1,17 @@
+ChartDirector
+	http://www.advsofteng.com/cdphp.html
+
+GraPHPite
+	http://graphpite.sourceforge.net/
+
+JpGraph
+	http://www.aditus.nu/jpgraph/
+
+LibChart
+	http://naku.dohcrew.com/libchart/pages/introduction/
+
+pChart
+	http://pchart.sourceforge.net/
+
+TeeChart
+	http://www.steema.com/products/teechart/overview.html

admin/helpers/PHPExcel/Chart/Renderer/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/Chart/Renderer/jpgraph.php

@@ -0,0 +1,855 @@
+<?php
+
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart_Renderer
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+require_once(PHPExcel_Settings::getChartRendererPath().'/jpgraph.php');
+
+
+/**
+ * PHPExcel_Chart_Renderer_jpgraph
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart_Renderer
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_Renderer_jpgraph
+{
+	private static $_width	= 640;
+
+	private static $_height	= 480;
+
+	private static $_colourSet = array( 'mediumpurple1',	'palegreen3',	'gold1',		'cadetblue1',
+										'darkmagenta',		'coral',		'dodgerblue3',	'eggplant',
+										'mediumblue',		'magenta',		'sandybrown',	'cyan',
+										'firebrick1',		'forestgreen',	'deeppink4',	'darkolivegreen',
+										'goldenrod2'
+									  );
+
+	private static $_markSet = array(	'diamond'	=> MARK_DIAMOND,
+										'square'	=> MARK_SQUARE,
+										'triangle'	=> MARK_UTRIANGLE,
+										'x'			=> MARK_X,
+										'star'		=> MARK_STAR,
+										'dot'		=> MARK_FILLEDCIRCLE,
+										'dash'		=> MARK_DTRIANGLE,
+										'circle'	=> MARK_CIRCLE,
+										'plus'		=> MARK_CROSS
+									);
+
+
+	private $_chart	= null;
+
+	private $_graph	= null;
+
+	private static $_plotColour	= 0;
+
+	private static $_plotMark	= 0;
+
+
+	private function _formatPointMarker($seriesPlot,$markerID) {
+		$plotMarkKeys = array_keys(self::$_markSet);
+		if (is_null($markerID)) {
+			//	Use default plot marker (next marker in the series)
+			self::$_plotMark %= count(self::$_markSet);
+			$seriesPlot->mark->SetType(self::$_markSet[$plotMarkKeys[self::$_plotMark++]]);
+		} elseif ($markerID !== 'none') {
+			//	Use specified plot marker (if it exists)
+			if (isset(self::$_markSet[$markerID])) {
+				$seriesPlot->mark->SetType(self::$_markSet[$markerID]);
+			} else {
+				//	If the specified plot marker doesn't exist, use default plot marker (next marker in the series)
+				self::$_plotMark %= count(self::$_markSet);
+				$seriesPlot->mark->SetType(self::$_markSet[$plotMarkKeys[self::$_plotMark++]]);
+			}
+		} else {
+			//	Hide plot marker
+			$seriesPlot->mark->Hide();
+		}
+		$seriesPlot->mark->SetColor(self::$_colourSet[self::$_plotColour]);
+		$seriesPlot->mark->SetFillColor(self::$_colourSet[self::$_plotColour]);
+		$seriesPlot->SetColor(self::$_colourSet[self::$_plotColour++]);
+
+		return $seriesPlot;
+	}	//	function _formatPointMarker()
+
+
+	private function _formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation = '') {
+		$datasetLabelFormatCode = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getFormatCode();
+		if (!is_null($datasetLabelFormatCode)) {
+			//	Retrieve any label formatting code
+			$datasetLabelFormatCode = stripslashes($datasetLabelFormatCode);
+		}
+
+		$testCurrentIndex = 0;
+		foreach($datasetLabels as $i => $datasetLabel) {
+			if (is_array($datasetLabel)) {
+				if ($rotation == 'bar') {
+					$datasetLabels[$i] = implode(" ",$datasetLabel);
+				} else {
+					$datasetLabel = array_reverse($datasetLabel);
+					$datasetLabels[$i] = implode("\n",$datasetLabel);
+				}
+			} else {
+				//	Format labels according to any formatting code
+				if (!is_null($datasetLabelFormatCode)) {
+					$datasetLabels[$i] = PHPExcel_Style_NumberFormat::toFormattedString($datasetLabel,$datasetLabelFormatCode);
+				}
+			}
+			++$testCurrentIndex;
+		}
+
+		return $datasetLabels;
+	}	//	function _formatDataSetLabels()
+
+
+	private function _percentageSumCalculation($groupID,$seriesCount) {
+		//	Adjust our values to a percentage value across all series in the group
+		for($i = 0; $i < $seriesCount; ++$i) {
+			if ($i == 0) {
+				$sumValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+			} else {
+				$nextValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+				foreach($nextValues as $k => $value) {
+					if (isset($sumValues[$k])) {
+						$sumValues[$k] += $value;
+					} else {
+						$sumValues[$k] = $value;
+					}
+				}
+			}
+		}
+
+		return $sumValues;
+	}	//	function _percentageSumCalculation()
+
+
+	private function _percentageAdjustValues($dataValues,$sumValues) {
+		foreach($dataValues as $k => $dataValue) {
+			$dataValues[$k] = $dataValue / $sumValues[$k] * 100;
+		}
+
+		return $dataValues;
+	}	//	function _percentageAdjustValues()
+
+
+	private function _getCaption($captionElement) {
+		//	Read any caption
+		$caption = (!is_null($captionElement)) ? $captionElement->getCaption() : NULL;
+		//	Test if we have a title caption to display
+		if (!is_null($caption)) {
+			//	If we do, it could be a plain string or an array
+			if (is_array($caption)) {
+				//	Implode an array to a plain string
+				$caption = implode('',$caption);
+			}
+		}
+		return $caption;
+	}	//	function _getCaption()
+
+
+	private function _renderTitle() {
+		$title = $this->_getCaption($this->_chart->getTitle());
+		if (!is_null($title)) {
+			$this->_graph->title->Set($title);
+		}
+	}	//	function _renderTitle()
+
+
+	private function _renderLegend() {
+		$legend = $this->_chart->getLegend();
+		if (!is_null($legend)) {
+			$legendPosition = $legend->getPosition();
+			$legendOverlay = $legend->getOverlay();
+			switch ($legendPosition) {
+				case 'r'	:
+					$this->_graph->legend->SetPos(0.01,0.5,'right','center');	//	right
+					$this->_graph->legend->SetColumns(1);
+					break;
+				case 'l'	:
+					$this->_graph->legend->SetPos(0.01,0.5,'left','center');	//	left
+					$this->_graph->legend->SetColumns(1);
+					break;
+				case 't'	:
+					$this->_graph->legend->SetPos(0.5,0.01,'center','top');	//	top
+					break;
+				case 'b'	:
+					$this->_graph->legend->SetPos(0.5,0.99,'center','bottom');	//	bottom
+					break;
+				default		:
+					$this->_graph->legend->SetPos(0.01,0.01,'right','top');	//	top-right
+					$this->_graph->legend->SetColumns(1);
+					break;
+			}
+		} else {
+			$this->_graph->legend->Hide();
+		}
+	}	//	function _renderLegend()
+
+
+	private function _renderCartesianPlotArea($type='textlin') {
+		$this->_graph = new Graph(self::$_width,self::$_height);
+		$this->_graph->SetScale($type);
+
+		$this->_renderTitle();
+
+		//	Rotate for bar rather than column chart
+		$rotation = $this->_chart->getPlotArea()->getPlotGroupByIndex(0)->getPlotDirection();
+		$reverse = ($rotation == 'bar') ? true : false;
+
+		$xAxisLabel = $this->_chart->getXAxisLabel();
+		if (!is_null($xAxisLabel)) {
+			$title = $this->_getCaption($xAxisLabel);
+			if (!is_null($title)) {
+				$this->_graph->xaxis->SetTitle($title,'center');
+				$this->_graph->xaxis->title->SetMargin(35);
+				if ($reverse) {
+					$this->_graph->xaxis->title->SetAngle(90);
+					$this->_graph->xaxis->title->SetMargin(90);
+				}
+			}
+		}
+
+		$yAxisLabel = $this->_chart->getYAxisLabel();
+		if (!is_null($yAxisLabel)) {
+			$title = $this->_getCaption($yAxisLabel);
+			if (!is_null($title)) {
+				$this->_graph->yaxis->SetTitle($title,'center');
+				if ($reverse) {
+					$this->_graph->yaxis->title->SetAngle(0);
+					$this->_graph->yaxis->title->SetMargin(-55);
+				}
+			}
+		}
+	}	//	function _renderCartesianPlotArea()
+
+
+	private function _renderPiePlotArea($doughnut = False) {
+		$this->_graph = new PieGraph(self::$_width,self::$_height);
+
+		$this->_renderTitle();
+	}	//	function _renderPiePlotArea()
+
+
+	private function _renderRadarPlotArea() {
+		$this->_graph = new RadarGraph(self::$_width,self::$_height);
+		$this->_graph->SetScale('lin');
+
+		$this->_renderTitle();
+	}	//	function _renderRadarPlotArea()
+
+
+	private function _renderPlotLine($groupID, $filled = false, $combination = false, $dimensions = '2d') {
+		$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+
+        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());
+		if ($labelCount > 0) {
+			$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+			$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount);
+			$this->_graph->xaxis->SetTickLabels($datasetLabels);
+		}
+
+		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+		$seriesPlots = array();
+		if ($grouping == 'percentStacked') {
+			$sumValues = $this->_percentageSumCalculation($groupID,$seriesCount);
+		}
+
+		//	Loop through each data series in turn
+		for($i = 0; $i < $seriesCount; ++$i) {
+			$dataValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+			$marker = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();
+
+			if ($grouping == 'percentStacked') {
+				$dataValues = $this->_percentageAdjustValues($dataValues,$sumValues);
+			}
+
+			//	Fill in any missing values in the $dataValues array
+			$testCurrentIndex = 0;
+			foreach($dataValues as $k => $dataValue) {
+				while($k != $testCurrentIndex) {
+					$dataValues[$testCurrentIndex] = null;
+					++$testCurrentIndex;
+				}
+				++$testCurrentIndex;
+			}
+
+			$seriesPlot = new LinePlot($dataValues);
+			if ($combination) {
+				$seriesPlot->SetBarCenter();
+			}
+
+			if ($filled) {
+				$seriesPlot->SetFilled(true);
+				$seriesPlot->SetColor('black');
+				$seriesPlot->SetFillColor(self::$_colourSet[self::$_plotColour++]);
+			} else {
+				//	Set the appropriate plot marker
+				$this->_formatPointMarker($seriesPlot,$marker);
+			}
+			$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();
+			$seriesPlot->SetLegend($dataLabel);
+
+			$seriesPlots[] = $seriesPlot;
+		}
+
+		if ($grouping == 'standard') {
+			$groupPlot = $seriesPlots;
+		} else {
+			$groupPlot = new AccLinePlot($seriesPlots);
+		}
+		$this->_graph->Add($groupPlot);
+	}	//	function _renderPlotLine()
+
+
+	private function _renderPlotBar($groupID, $dimensions = '2d') {
+		$rotation = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotDirection();
+		//	Rotate for bar rather than column chart
+		if (($groupID == 0) && ($rotation == 'bar')) {
+			$this->_graph->Set90AndMargin();
+		}
+		$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+
+        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());
+		if ($labelCount > 0) {
+			$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+			$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation);
+			//	Rotate for bar rather than column chart
+			if ($rotation == 'bar') {
+				$datasetLabels = array_reverse($datasetLabels);
+				$this->_graph->yaxis->SetPos('max');
+				$this->_graph->yaxis->SetLabelAlign('center','top');
+				$this->_graph->yaxis->SetLabelSide(SIDE_RIGHT);
+			}
+			$this->_graph->xaxis->SetTickLabels($datasetLabels);
+		}
+
+
+		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+		$seriesPlots = array();
+		if ($grouping == 'percentStacked') {
+			$sumValues = $this->_percentageSumCalculation($groupID,$seriesCount);
+		}
+
+		//	Loop through each data series in turn
+		for($j = 0; $j < $seriesCount; ++$j) {
+			$dataValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($j)->getDataValues();
+			if ($grouping == 'percentStacked') {
+				$dataValues = $this->_percentageAdjustValues($dataValues,$sumValues);
+			}
+
+			//	Fill in any missing values in the $dataValues array
+			$testCurrentIndex = 0;
+			foreach($dataValues as $k => $dataValue) {
+				while($k != $testCurrentIndex) {
+					$dataValues[$testCurrentIndex] = null;
+					++$testCurrentIndex;
+				}
+				++$testCurrentIndex;
+			}
+
+			//	Reverse the $dataValues order for bar rather than column chart
+			if ($rotation == 'bar') {
+				$dataValues = array_reverse($dataValues);
+			}
+			$seriesPlot = new BarPlot($dataValues);
+			$seriesPlot->SetColor('black');
+			$seriesPlot->SetFillColor(self::$_colourSet[self::$_plotColour++]);
+			if ($dimensions == '3d') {
+				$seriesPlot->SetShadow();
+			}
+			if (!$this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($j)) {
+				$dataLabel = '';
+			} else {
+				$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($j)->getDataValue();
+			}
+			$seriesPlot->SetLegend($dataLabel);
+
+			$seriesPlots[] = $seriesPlot;
+		}
+		//	Reverse the plot order for bar rather than column chart
+		if (($rotation == 'bar') && (!($grouping == 'percentStacked'))) {
+			$seriesPlots = array_reverse($seriesPlots);
+		}
+
+		if ($grouping == 'clustered') {
+			$groupPlot = new GroupBarPlot($seriesPlots);
+		} elseif ($grouping == 'standard') {
+			$groupPlot = new GroupBarPlot($seriesPlots);
+		} else {
+			$groupPlot = new AccBarPlot($seriesPlots);
+			if ($dimensions == '3d') {
+				$groupPlot->SetShadow();
+			}
+		}
+
+		$this->_graph->Add($groupPlot);
+	}	//	function _renderPlotBar()
+
+
+	private function _renderPlotScatter($groupID,$bubble) {
+		$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+		$scatterStyle = $bubbleSize = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+
+		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+		$seriesPlots = array();
+
+		//	Loop through each data series in turn
+		for($i = 0; $i < $seriesCount; ++$i) {
+			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();
+			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+
+			foreach($dataValuesY as $k => $dataValueY) {
+				$dataValuesY[$k] = $k;
+			}
+
+			$seriesPlot = new ScatterPlot($dataValuesX,$dataValuesY);
+			if ($scatterStyle == 'lineMarker') {
+				$seriesPlot->SetLinkPoints();
+				$seriesPlot->link->SetColor(self::$_colourSet[self::$_plotColour]);
+			} elseif ($scatterStyle == 'smoothMarker') {
+				$spline = new Spline($dataValuesY,$dataValuesX);
+				list($splineDataY,$splineDataX) = $spline->Get(count($dataValuesX) * self::$_width / 20);
+				$lplot = new LinePlot($splineDataX,$splineDataY);
+				$lplot->SetColor(self::$_colourSet[self::$_plotColour]);
+
+				$this->_graph->Add($lplot);
+			}
+
+			if ($bubble) {
+				$this->_formatPointMarker($seriesPlot,'dot');
+				$seriesPlot->mark->SetColor('black');
+				$seriesPlot->mark->SetSize($bubbleSize);
+			} else {
+				$marker = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();
+				$this->_formatPointMarker($seriesPlot,$marker);
+			}
+			$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();
+			$seriesPlot->SetLegend($dataLabel);
+
+			$this->_graph->Add($seriesPlot);
+		}
+	}	//	function _renderPlotScatter()
+
+
+	private function _renderPlotRadar($groupID) {
+		$radarStyle = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+
+		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+		$seriesPlots = array();
+
+		//	Loop through each data series in turn
+		for($i = 0; $i < $seriesCount; ++$i) {
+			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();
+			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+			$marker = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getPointMarker();
+
+			$dataValues = array();
+			foreach($dataValuesY as $k => $dataValueY) {
+				$dataValues[$k] = implode(' ',array_reverse($dataValueY));
+			}
+			$tmp = array_shift($dataValues);
+			$dataValues[] = $tmp;
+			$tmp = array_shift($dataValuesX);
+			$dataValuesX[] = $tmp;
+
+			$this->_graph->SetTitles(array_reverse($dataValues));
+
+			$seriesPlot = new RadarPlot(array_reverse($dataValuesX));
+
+			$dataLabel = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotLabelByIndex($i)->getDataValue();
+			$seriesPlot->SetColor(self::$_colourSet[self::$_plotColour++]);
+			if ($radarStyle == 'filled') {
+				$seriesPlot->SetFillColor(self::$_colourSet[self::$_plotColour]);
+			}
+			$this->_formatPointMarker($seriesPlot,$marker);
+			$seriesPlot->SetLegend($dataLabel);
+
+			$this->_graph->Add($seriesPlot);
+		}
+	}	//	function _renderPlotRadar()
+
+
+	private function _renderPlotContour($groupID) {
+		$contourStyle = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+
+		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+		$seriesPlots = array();
+
+		$dataValues = array();
+		//	Loop through each data series in turn
+		for($i = 0; $i < $seriesCount; ++$i) {
+			$dataValuesY = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex($i)->getDataValues();
+			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($i)->getDataValues();
+
+			$dataValues[$i] = $dataValuesX;
+		}
+		$seriesPlot = new ContourPlot($dataValues);
+
+		$this->_graph->Add($seriesPlot);
+	}	//	function _renderPlotContour()
+
+
+	private function _renderPlotStock($groupID) {
+		$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+		$plotOrder = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotOrder();
+
+		$dataValues = array();
+		//	Loop through each data series in turn and build the plot arrays
+		foreach($plotOrder as $i => $v) {
+			$dataValuesX = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($v)->getDataValues();
+			foreach($dataValuesX as $j => $dataValueX) {
+				$dataValues[$plotOrder[$i]][$j] = $dataValueX;
+			}
+		}
+		if(empty($dataValues)) {
+			return;
+		}
+
+		$dataValuesPlot = array();
+        // Flatten the plot arrays to a single dimensional array to work with jpgraph
+		for($j = 0; $j < count($dataValues[0]); $j++) {
+			for($i = 0; $i < $seriesCount; $i++) {
+				$dataValuesPlot[] = $dataValues[$i][$j];
+			}
+		}
+
+        // Set the x-axis labels
+        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());
+		if ($labelCount > 0) {
+			$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+			$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount);
+			$this->_graph->xaxis->SetTickLabels($datasetLabels);
+		}
+
+		$seriesPlot = new StockPlot($dataValuesPlot);
+		$seriesPlot->SetWidth(20);
+
+		$this->_graph->Add($seriesPlot);
+	}	//	function _renderPlotStock()
+
+
+	private function _renderAreaChart($groupCount, $dimensions = '2d') {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_line.php');
+
+		$this->_renderCartesianPlotArea();
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$this->_renderPlotLine($i,True,False,$dimensions);
+		}
+	}	//	function _renderAreaChart()
+
+
+	private function _renderLineChart($groupCount, $dimensions = '2d') {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_line.php');
+
+		$this->_renderCartesianPlotArea();
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$this->_renderPlotLine($i,False,False,$dimensions);
+		}
+	}	//	function _renderLineChart()
+
+
+	private function _renderBarChart($groupCount, $dimensions = '2d') {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_bar.php');
+
+		$this->_renderCartesianPlotArea();
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$this->_renderPlotBar($i,$dimensions);
+		}
+	}	//	function _renderBarChart()
+
+
+	private function _renderScatterChart($groupCount) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_scatter.php');
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_regstat.php');
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_line.php');
+
+		$this->_renderCartesianPlotArea('linlin');
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$this->_renderPlotScatter($i,false);
+		}
+	}	//	function _renderScatterChart()
+
+
+	private function _renderBubbleChart($groupCount) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_scatter.php');
+
+		$this->_renderCartesianPlotArea('linlin');
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$this->_renderPlotScatter($i,true);
+		}
+	}	//	function _renderBubbleChart()
+
+
+	private function _renderPieChart($groupCount, $dimensions = '2d', $doughnut = False, $multiplePlots = False) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_pie.php');
+		if ($dimensions == '3d') {
+			require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_pie3d.php');
+		}
+
+		$this->_renderPiePlotArea($doughnut);
+
+		$iLimit = ($multiplePlots) ? $groupCount : 1;
+		for($groupID = 0; $groupID < $iLimit; ++$groupID) {
+			$grouping = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
+			$exploded = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotStyle();
+			if ($groupID == 0) {
+		        $labelCount = count($this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());
+				if ($labelCount > 0) {
+					$datasetLabels = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
+					$datasetLabels = $this->_formatDataSetLabels($groupID, $datasetLabels, $labelCount);
+				}
+			}
+
+			$seriesCount = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotSeriesCount();
+			$seriesPlots = array();
+			//	For pie charts, we only display the first series: doughnut charts generally display all series
+			$jLimit = ($multiplePlots) ? $seriesCount : 1;
+			//	Loop through each data series in turn
+			for($j = 0; $j < $jLimit; ++$j) {
+				$dataValues = $this->_chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex($j)->getDataValues();
+
+				//	Fill in any missing values in the $dataValues array
+				$testCurrentIndex = 0;
+				foreach($dataValues as $k => $dataValue) {
+					while($k != $testCurrentIndex) {
+						$dataValues[$testCurrentIndex] = null;
+						++$testCurrentIndex;
+					}
+					++$testCurrentIndex;
+				}
+
+				if ($dimensions == '3d') {
+					$seriesPlot = new PiePlot3D($dataValues);
+				} else {
+					if ($doughnut) {
+						$seriesPlot = new PiePlotC($dataValues);
+					} else {
+						$seriesPlot = new PiePlot($dataValues);
+					}
+				}
+
+				if ($multiplePlots) {
+					$seriesPlot->SetSize(($jLimit-$j) / ($jLimit * 4));
+				}
+
+				if ($doughnut) {
+					$seriesPlot->SetMidColor('white');
+				}
+
+				$seriesPlot->SetColor(self::$_colourSet[self::$_plotColour++]);
+				if (count($datasetLabels) > 0)
+					$seriesPlot->SetLabels(array_fill(0,count($datasetLabels),''));
+				if ($dimensions != '3d') {
+					$seriesPlot->SetGuideLines(false);
+				}
+				if ($j == 0) {
+					if ($exploded) {
+						$seriesPlot->ExplodeAll();
+					}
+					$seriesPlot->SetLegends($datasetLabels);
+				}
+
+				$this->_graph->Add($seriesPlot);
+			}
+		}
+	}	//	function _renderPieChart()
+
+
+	private function _renderRadarChart($groupCount) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_radar.php');
+
+		$this->_renderRadarPlotArea();
+
+		for($groupID = 0; $groupID < $groupCount; ++$groupID) {
+			$this->_renderPlotRadar($groupID);
+		}
+	}	//	function _renderRadarChart()
+
+
+	private function _renderStockChart($groupCount) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_stock.php');
+
+		$this->_renderCartesianPlotArea('intint');
+
+		for($groupID = 0; $groupID < $groupCount; ++$groupID) {
+			$this->_renderPlotStock($groupID);
+		}
+	}	//	function _renderStockChart()
+
+
+	private function _renderContourChart($groupCount,$dimensions) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_contour.php');
+
+		$this->_renderCartesianPlotArea('intint');
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$this->_renderPlotContour($i);
+		}
+	}	//	function _renderContourChart()
+
+
+	private function _renderCombinationChart($groupCount,$dimensions,$outputDestination) {
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_line.php');
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_bar.php');
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_scatter.php');
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_regstat.php');
+		require_once(PHPExcel_Settings::getChartRendererPath().'jpgraph_line.php');
+
+		$this->_renderCartesianPlotArea();
+
+		for($i = 0; $i < $groupCount; ++$i) {
+			$dimensions = null;
+			$chartType = $this->_chart->getPlotArea()->getPlotGroupByIndex($i)->getPlotType();
+			switch ($chartType) {
+				case 'area3DChart' :
+					$dimensions = '3d';
+				case 'areaChart' :
+					$this->_renderPlotLine($i,True,True,$dimensions);
+					break;
+				case 'bar3DChart' :
+					$dimensions = '3d';
+				case 'barChart' :
+					$this->_renderPlotBar($i,$dimensions);
+					break;
+				case 'line3DChart' :
+					$dimensions = '3d';
+				case 'lineChart' :
+					$this->_renderPlotLine($i,False,True,$dimensions);
+					break;
+				case 'scatterChart' :
+					$this->_renderPlotScatter($i,false);
+					break;
+				case 'bubbleChart' :
+					$this->_renderPlotScatter($i,true);
+					break;
+				default	:
+					$this->_graph = null;
+					return false;
+			}
+		}
+
+		$this->_renderLegend();
+
+		$this->_graph->Stroke($outputDestination);
+		return true;
+	}	//	function _renderCombinationChart()
+
+
+	public function render($outputDestination) {
+        self::$_plotColour = 0;
+
+		$groupCount = $this->_chart->getPlotArea()->getPlotGroupCount();
+
+		$dimensions = null;
+		if ($groupCount == 1) {
+			$chartType = $this->_chart->getPlotArea()->getPlotGroupByIndex(0)->getPlotType();
+		} else {
+			$chartTypes = array();
+			for($i = 0; $i < $groupCount; ++$i) {
+				$chartTypes[] = $this->_chart->getPlotArea()->getPlotGroupByIndex($i)->getPlotType();
+			}
+			$chartTypes = array_unique($chartTypes);
+			if (count($chartTypes) == 1) {
+				$chartType = array_pop($chartTypes);
+			} elseif (count($chartTypes) == 0) {
+				echo 'Chart is not yet implemented<br />';
+				return false;
+			} else {
+				return $this->_renderCombinationChart($groupCount,$dimensions,$outputDestination);
+			}
+		}
+
+		switch ($chartType) {
+			case 'area3DChart' :
+				$dimensions = '3d';
+			case 'areaChart' :
+				$this->_renderAreaChart($groupCount,$dimensions);
+				break;
+			case 'bar3DChart' :
+				$dimensions = '3d';
+			case 'barChart' :
+				$this->_renderBarChart($groupCount,$dimensions);
+				break;
+			case 'line3DChart' :
+				$dimensions = '3d';
+			case 'lineChart' :
+				$this->_renderLineChart($groupCount,$dimensions);
+				break;
+			case 'pie3DChart' :
+				$dimensions = '3d';
+			case 'pieChart' :
+				$this->_renderPieChart($groupCount,$dimensions,False,False);
+				break;
+			case 'doughnut3DChart' :
+				$dimensions = '3d';
+			case 'doughnutChart' :
+				$this->_renderPieChart($groupCount,$dimensions,True,True);
+				break;
+			case 'scatterChart' :
+				$this->_renderScatterChart($groupCount);
+				break;
+			case 'bubbleChart' :
+				$this->_renderBubbleChart($groupCount);
+				break;
+			case 'radarChart' :
+				$this->_renderRadarChart($groupCount);
+				break;
+			case 'surface3DChart' :
+				$dimensions = '3d';
+			case 'surfaceChart' :
+				$this->_renderContourChart($groupCount,$dimensions);
+				break;
+			case 'stockChart' :
+				$this->_renderStockChart($groupCount,$dimensions);
+				break;
+			default	:
+				echo $chartType.' is not yet implemented<br />';
+				return false;
+		}
+		$this->_renderLegend();
+
+		$this->_graph->Stroke($outputDestination);
+		return true;
+	}	//	function render()
+
+
+	/**
+	 * Create a new PHPExcel_Chart_Renderer_jpgraph
+	 */
+	public function __construct(PHPExcel_Chart $chart)
+	{
+		$this->_graph	= null;
+		$this->_chart	= $chart;
+	}	//	function __construct()
+
+}	//	PHPExcel_Chart_Renderer_jpgraph

admin/helpers/PHPExcel/Chart/Title.php

@@ -0,0 +1,92 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Chart_Title
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Chart
+ * @copyright	Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Chart_Title
+{
+
+	/**
+	 * Title Caption
+	 *
+	 * @var string
+	 */
+	private $_caption = null;
+
+	/**
+	 * Title Layout
+	 *
+	 * @var PHPExcel_Chart_Layout
+	 */
+	private $_layout = null;
+
+	/**
+	 * Create a new PHPExcel_Chart_Title
+	 */
+	public function __construct($caption = null, PHPExcel_Chart_Layout $layout = null)
+	{
+		$this->_caption = $caption;
+		$this->_layout = $layout;
+	}
+
+	/**
+	 * Get caption
+	 *
+	 * @return string
+	 */
+	public function getCaption() {
+		return $this->_caption;
+	}
+
+	/**
+	 * Set caption
+	 *
+	 * @param string $caption
+     * @return PHPExcel_Chart_Title
+	 */
+	public function setCaption($caption = null) {
+		$this->_caption = $caption;
+        
+        return $this;
+	}
+
+	/**
+	 * Get Layout
+	 *
+	 * @return PHPExcel_Chart_Layout
+	 */
+	public function getLayout() {
+		return $this->_layout;
+	}
+
+}

admin/helpers/PHPExcel/Chart/index.html

@@ -0,0 +1 @@
+<html><body bgcolor="#FFFFFF"></body></html>

admin/helpers/PHPExcel/Comment.php

@@ -0,0 +1,327 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Comment
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Comment implements PHPExcel_IComparable
+{
+    /**
+     * Author
+     *
+     * @var string
+     */
+    private $_author;
+
+    /**
+     * Rich text comment
+     *
+     * @var PHPExcel_RichText
+     */
+    private $_text;
+
+    /**
+     * Comment width (CSS style, i.e. XXpx or YYpt)
+     *
+     * @var string
+     */
+    private $_width = '96pt';
+
+    /**
+     * Left margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @var string
+     */
+    private $_marginLeft = '59.25pt';
+
+    /**
+     * Top margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @var string
+     */
+    private $_marginTop = '1.5pt';
+
+    /**
+     * Visible
+     *
+     * @var boolean
+     */
+    private $_visible = false;
+
+    /**
+     * Comment height (CSS style, i.e. XXpx or YYpt)
+     *
+     * @var string
+     */
+    private $_height = '55.5pt';
+
+    /**
+     * Comment fill color
+     *
+     * @var PHPExcel_Style_Color
+     */
+    private $_fillColor;
+
+    /**
+     * Alignment
+     *
+     * @var string
+     */
+    private $_alignment;
+
+    /**
+     * Create a new PHPExcel_Comment
+     *
+     * @throws PHPExcel_Exception
+     */
+    public function __construct()
+    {
+        // Initialise variables
+        $this->_author		= 'Author';
+        $this->_text		= new PHPExcel_RichText();
+        $this->_fillColor	= new PHPExcel_Style_Color('FFFFFFE1');
+        $this->_alignment	= PHPExcel_Style_Alignment::HORIZONTAL_GENERAL;
+    }
+
+    /**
+     * Get Author
+     *
+     * @return string
+     */
+    public function getAuthor() {
+        return $this->_author;
+    }
+
+    /**
+     * Set Author
+     *
+     * @param string $pValue
+     * @return PHPExcel_Comment
+     */
+    public function setAuthor($pValue = '') {
+        $this->_author = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Rich text comment
+     *
+     * @return PHPExcel_RichText
+     */
+    public function getText() {
+        return $this->_text;
+    }
+
+    /**
+     * Set Rich text comment
+     *
+     * @param PHPExcel_RichText $pValue
+     * @return PHPExcel_Comment
+     */
+    public function setText(PHPExcel_RichText $pValue) {
+        $this->_text = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get comment width (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getWidth() {
+        return $this->_width;
+    }
+
+    /**
+     * Set comment width (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setWidth($value = '96pt') {
+        $this->_width = $value;
+        return $this;
+    }
+
+    /**
+     * Get comment height (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getHeight() {
+        return $this->_height;
+    }
+
+    /**
+     * Set comment height (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setHeight($value = '55.5pt') {
+        $this->_height = $value;
+        return $this;
+    }
+
+    /**
+     * Get left margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getMarginLeft() {
+        return $this->_marginLeft;
+    }
+
+    /**
+     * Set left margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setMarginLeft($value = '59.25pt') {
+        $this->_marginLeft = $value;
+        return $this;
+    }
+
+    /**
+     * Get top margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @return string
+     */
+    public function getMarginTop() {
+        return $this->_marginTop;
+    }
+
+    /**
+     * Set top margin (CSS style, i.e. XXpx or YYpt)
+     *
+     * @param string $value
+     * @return PHPExcel_Comment
+     */
+    public function setMarginTop($value = '1.5pt') {
+        $this->_marginTop = $value;
+        return $this;
+    }
+
+    /**
+     * Is the comment visible by default?
+     *
+     * @return boolean
+     */
+    public function getVisible() {
+        return $this->_visible;
+    }
+
+    /**
+     * Set comment default visibility
+     *
+     * @param boolean $value
+     * @return PHPExcel_Comment
+     */
+    public function setVisible($value = false) {
+        $this->_visible = $value;
+        return $this;
+    }
+
+    /**
+     * Get fill color
+     *
+     * @return PHPExcel_Style_Color
+     */
+    public function getFillColor() {
+        return $this->_fillColor;
+    }
+
+    /**
+     * Set Alignment
+     *
+     * @param string $pValue
+     * @return PHPExcel_Comment
+     */
+    public function setAlignment($pValue = PHPExcel_Style_Alignment::HORIZONTAL_GENERAL) {
+        $this->_alignment = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Alignment
+     *
+     * @return string
+     */
+    public function getAlignment() {
+        return $this->_alignment;
+    }
+
+    /**
+     * Get hash code
+     *
+     * @return string    Hash code
+     */
+    public function getHashCode() {
+        return md5(
+              $this->_author
+            . $this->_text->getHashCode()
+            . $this->_width
+            . $this->_height
+            . $this->_marginLeft
+            . $this->_marginTop
+            . ($this->_visible ? 1 : 0)
+            . $this->_fillColor->getHashCode()
+            . $this->_alignment
+            . __CLASS__
+        );
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone() {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+
+    /**
+     * Convert to string
+     *
+     * @return string
+     */
+    public function __toString() {
+        return $this->_text->getPlainText();
+    }
+
+}

admin/helpers/PHPExcel/DocumentProperties.php

@@ -0,0 +1,587 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category    PHPExcel
+ * @package    PHPExcel
+ * @copyright    Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_DocumentProperties
+ *
+ * @category    PHPExcel
+ * @package        PHPExcel
+ * @copyright    Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_DocumentProperties
+{
+    /** constants */
+    const PROPERTY_TYPE_BOOLEAN	= 'b';
+    const PROPERTY_TYPE_INTEGER = 'i';
+    const PROPERTY_TYPE_FLOAT   = 'f';
+    const PROPERTY_TYPE_DATE    = 'd';
+    const PROPERTY_TYPE_STRING  = 's';
+    const PROPERTY_TYPE_UNKNOWN = 'u';
+
+    /**
+     * Creator
+     *
+     * @var string
+     */
+    private $_creator    = 'Unknown Creator';
+
+    /**
+     * LastModifiedBy
+     *
+     * @var string
+     */
+    private $_lastModifiedBy;
+
+    /**
+     * Created
+     *
+     * @var datetime
+     */
+    private $_created;
+
+    /**
+     * Modified
+     *
+     * @var datetime
+     */
+    private $_modified;
+
+    /**
+     * Title
+     *
+     * @var string
+     */
+    private $_title            = 'Untitled Spreadsheet';
+
+    /**
+     * Description
+     *
+     * @var string
+     */
+    private $_description    = '';
+
+    /**
+     * Subject
+     *
+     * @var string
+     */
+    private $_subject        = '';
+
+    /**
+     * Keywords
+     *
+     * @var string
+     */
+    private $_keywords        = '';
+
+    /**
+     * Category
+     *
+     * @var string
+     */
+    private $_category        = '';
+
+    /**
+     * Manager
+     *
+     * @var string
+     */
+    private $_manager        = '';
+
+    /**
+     * Company
+     *
+     * @var string
+     */
+    private $_company        = 'Microsoft Corporation';
+
+    /**
+     * Custom Properties
+     *
+     * @var string
+     */
+    private $_customProperties    = array();
+
+
+    /**
+     * Create a new PHPExcel_DocumentProperties
+     */
+    public function __construct()
+    {
+        // Initialise values
+        $this->_lastModifiedBy    = $this->_creator;
+        $this->_created        = time();
+        $this->_modified    = time();
+    }
+
+    /**
+     * Get Creator
+     *
+     * @return string
+     */
+    public function getCreator() {
+        return $this->_creator;
+    }
+
+    /**
+     * Set Creator
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setCreator($pValue = '') {
+        $this->_creator = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Last Modified By
+     *
+     * @return string
+     */
+    public function getLastModifiedBy() {
+        return $this->_lastModifiedBy;
+    }
+
+    /**
+     * Set Last Modified By
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setLastModifiedBy($pValue = '') {
+        $this->_lastModifiedBy = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Created
+     *
+     * @return datetime
+     */
+    public function getCreated() {
+        return $this->_created;
+    }
+
+    /**
+     * Set Created
+     *
+     * @param datetime $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setCreated($pValue = null) {
+        if ($pValue === NULL) {
+            $pValue = time();
+        } elseif (is_string($pValue)) {
+            if (is_numeric($pValue)) {
+                $pValue = intval($pValue);
+            } else {
+                $pValue = strtotime($pValue);
+            }
+        }
+
+        $this->_created = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Modified
+     *
+     * @return datetime
+     */
+    public function getModified() {
+        return $this->_modified;
+    }
+
+    /**
+     * Set Modified
+     *
+     * @param datetime $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setModified($pValue = null) {
+        if ($pValue === NULL) {
+            $pValue = time();
+        } elseif (is_string($pValue)) {
+            if (is_numeric($pValue)) {
+                $pValue = intval($pValue);
+            } else {
+                $pValue = strtotime($pValue);
+            }
+        }
+
+        $this->_modified = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Title
+     *
+     * @return string
+     */
+    public function getTitle() {
+        return $this->_title;
+    }
+
+    /**
+     * Set Title
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setTitle($pValue = '') {
+        $this->_title = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Description
+     *
+     * @return string
+     */
+    public function getDescription() {
+        return $this->_description;
+    }
+
+    /**
+     * Set Description
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setDescription($pValue = '') {
+        $this->_description = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Subject
+     *
+     * @return string
+     */
+    public function getSubject() {
+        return $this->_subject;
+    }
+
+    /**
+     * Set Subject
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setSubject($pValue = '') {
+        $this->_subject = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Keywords
+     *
+     * @return string
+     */
+    public function getKeywords() {
+        return $this->_keywords;
+    }
+
+    /**
+     * Set Keywords
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setKeywords($pValue = '') {
+        $this->_keywords = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Category
+     *
+     * @return string
+     */
+    public function getCategory() {
+        return $this->_category;
+    }
+
+    /**
+     * Set Category
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setCategory($pValue = '') {
+        $this->_category = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Company
+     *
+     * @return string
+     */
+    public function getCompany() {
+        return $this->_company;
+    }
+
+    /**
+     * Set Company
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setCompany($pValue = '') {
+        $this->_company = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get Manager
+     *
+     * @return string
+     */
+    public function getManager() {
+        return $this->_manager;
+    }
+
+    /**
+     * Set Manager
+     *
+     * @param string $pValue
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setManager($pValue = '') {
+        $this->_manager = $pValue;
+        return $this;
+    }
+
+    /**
+     * Get a List of Custom Property Names
+     *
+     * @return array of string
+     */
+    public function getCustomProperties() {
+        return array_keys($this->_customProperties);
+    }
+
+    /**
+     * Check if a Custom Property is defined
+     *
+     * @param string $propertyName
+     * @return boolean
+     */
+    public function isCustomPropertySet($propertyName) {
+        return isset($this->_customProperties[$propertyName]);
+    }
+
+    /**
+     * Get a Custom Property Value
+     *
+     * @param string $propertyName
+     * @return string
+     */
+    public function getCustomPropertyValue($propertyName) {
+        if (isset($this->_customProperties[$propertyName])) {
+            return $this->_customProperties[$propertyName]['value'];
+        }
+
+    }
+
+    /**
+     * Get a Custom Property Type
+     *
+     * @param string $propertyName
+     * @return string
+     */
+    public function getCustomPropertyType($propertyName) {
+        if (isset($this->_customProperties[$propertyName])) {
+            return $this->_customProperties[$propertyName]['type'];
+        }
+
+    }
+
+    /**
+     * Set a Custom Property
+     *
+     * @param string $propertyName
+     * @param mixed $propertyValue
+     * @param string $propertyType
+     * 	 'i'    : Integer
+     *   'f' : Floating Point
+     *   's' : String
+     *   'd' : Date/Time
+     *   'b' : Boolean
+     * @return PHPExcel_DocumentProperties
+     */
+    public function setCustomProperty($propertyName,$propertyValue='',$propertyType=NULL) {
+        if (($propertyType === NULL) || (!in_array($propertyType,array(self::PROPERTY_TYPE_INTEGER,
+                                                                       self::PROPERTY_TYPE_FLOAT,
+                                                                       self::PROPERTY_TYPE_STRING,
+                                                                       self::PROPERTY_TYPE_DATE,
+                                                                       self::PROPERTY_TYPE_BOOLEAN)))) {
+            if ($propertyValue === NULL) {
+                $propertyType = self::PROPERTY_TYPE_STRING;
+            } elseif (is_float($propertyValue)) {
+                $propertyType = self::PROPERTY_TYPE_FLOAT;
+            } elseif(is_int($propertyValue)) {
+                $propertyType = self::PROPERTY_TYPE_INTEGER;
+            } elseif (is_bool($propertyValue)) {
+                $propertyType = self::PROPERTY_TYPE_BOOLEAN;
+            } else {
+                $propertyType = self::PROPERTY_TYPE_STRING;
+            }
+        }
+
+        $this->_customProperties[$propertyName] = array('value' => $propertyValue, 'type' => $propertyType);
+        return $this;
+    }
+
+    /**
+     * Implement PHP __clone to create a deep clone, not just a shallow copy.
+     */
+    public function __clone() {
+        $vars = get_object_vars($this);
+        foreach ($vars as $key => $value) {
+            if (is_object($value)) {
+                $this->$key = clone $value;
+            } else {
+                $this->$key = $value;
+            }
+        }
+    }
+
+    public static function convertProperty($propertyValue,$propertyType) {
+        switch ($propertyType) {
+            case 'empty'    :    //    Empty
+                return '';
+                break;
+            case 'null'        :    //    Null
+                return NULL;
+                break;
+            case 'i1'        :    //    1-Byte Signed Integer
+            case 'i2'        :    //    2-Byte Signed Integer
+            case 'i4'        :    //    4-Byte Signed Integer
+            case 'i8'        :    //    8-Byte Signed Integer
+            case 'int'        :    //    Integer
+                return (int) $propertyValue;
+                break;
+            case 'ui1'        :    //    1-Byte Unsigned Integer
+            case 'ui2'        :    //    2-Byte Unsigned Integer
+            case 'ui4'        :    //    4-Byte Unsigned Integer
+            case 'ui8'        :    //    8-Byte Unsigned Integer
+            case 'uint'        :    //    Unsigned Integer
+                return abs((int) $propertyValue);
+                break;
+            case 'r4'        :    //    4-Byte Real Number
+            case 'r8'        :    //    8-Byte Real Number
+            case 'decimal'    :    //    Decimal
+                return (float) $propertyValue;
+                break;
+            case 'lpstr'    :    //    LPSTR
+            case 'lpwstr'    :    //    LPWSTR
+            case 'bstr'        :    //    Basic String
+                return $propertyValue;
+                break;
+            case 'date'        :    //    Date and Time
+            case 'filetime'    :    //    File Time
+                return strtotime($propertyValue);
+                break;
+            case 'bool'        :    //    Boolean
+                return ($propertyValue == 'true') ? True : False;
+                break;
+            case 'cy'        :    //    Currency
+            case 'error'    :    //    Error Status Code
+            case 'vector'    :    //    Vector
+            case 'array'    :    //    Array
+            case 'blob'        :    //    Binary Blob
+            case 'oblob'    :    //    Binary Blob Object
+            case 'stream'    :    //    Binary Stream
+            case 'ostream'    :    //    Binary Stream Object
+            case 'storage'    :    //    Binary Storage
+            case 'ostorage'    :    //    Binary Storage Object
+            case 'vstream'    :    //    Binary Versioned Stream
+            case 'clsid'    :    //    Class ID
+            case 'cf'        :    //    Clipboard Data
+                return $propertyValue;
+                break;
+        }
+        return $propertyValue;
+    }
+
+    public static function convertPropertyType($propertyType) {
+        switch ($propertyType) {
+            case 'i1'        :    //    1-Byte Signed Integer
+            case 'i2'        :    //    2-Byte Signed Integer
+            case 'i4'        :    //    4-Byte Signed Integer
+            case 'i8'        :    //    8-Byte Signed Integer
+            case 'int'        :    //    Integer
+            case 'ui1'        :    //    1-Byte Unsigned Integer
+            case 'ui2'        :    //    2-Byte Unsigned Integer
+            case 'ui4'        :    //    4-Byte Unsigned Integer
+            case 'ui8'        :    //    8-Byte Unsigned Integer
+            case 'uint'        :    //    Unsigned Integer
+                return self::PROPERTY_TYPE_INTEGER;
+                break;
+            case 'r4'        :    //    4-Byte Real Number
+            case 'r8'        :    //    8-Byte Real Number
+            case 'decimal'    :    //    Decimal
+                return self::PROPERTY_TYPE_FLOAT;
+                break;
+            case 'empty'    :    //    Empty
+            case 'null'        :    //    Null
+            case 'lpstr'    :    //    LPSTR
+            case 'lpwstr'    :    //    LPWSTR
+            case 'bstr'        :    //    Basic String
+                return self::PROPERTY_TYPE_STRING;
+                break;
+            case 'date'        :    //    Date and Time
+            case 'filetime'    :    //    File Time
+                return self::PROPERTY_TYPE_DATE;
+                break;
+            case 'bool'        :    //    Boolean
+                return self::PROPERTY_TYPE_BOOLEAN;
+                break;
+            case 'cy'        :    //    Currency
+            case 'error'    :    //    Error Status Code
+            case 'vector'    :    //    Vector
+            case 'array'    :    //    Array
+            case 'blob'        :    //    Binary Blob
+            case 'oblob'    :    //    Binary Blob Object
+            case 'stream'    :    //    Binary Stream
+            case 'ostream'    :    //    Binary Stream Object
+            case 'storage'    :    //    Binary Storage
+            case 'ostorage'    :    //    Binary Storage Object
+            case 'vstream'    :    //    Binary Versioned Stream
+            case 'clsid'    :    //    Class ID
+            case 'cf'        :    //    Clipboard Data
+                return self::PROPERTY_TYPE_UNKNOWN;
+                break;
+        }
+        return self::PROPERTY_TYPE_UNKNOWN;
+    }
+
+}

admin/helpers/PHPExcel/DocumentSecurity.php

@@ -0,0 +1,218 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_DocumentSecurity
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_DocumentSecurity
+{
+	/**
+	 * LockRevision
+	 *
+	 * @var boolean
+	 */
+	private $_lockRevision;
+
+	/**
+	 * LockStructure
+	 *
+	 * @var boolean
+	 */
+	private $_lockStructure;
+
+	/**
+	 * LockWindows
+	 *
+	 * @var boolean
+	 */
+	private $_lockWindows;
+
+	/**
+	 * RevisionsPassword
+	 *
+	 * @var string
+	 */
+	private $_revisionsPassword;
+
+	/**
+	 * WorkbookPassword
+	 *
+	 * @var string
+	 */
+	private $_workbookPassword;
+
+    /**
+     * Create a new PHPExcel_DocumentSecurity
+     */
+    public function __construct()
+    {
+    	// Initialise values
+    	$this->_lockRevision		= false;
+    	$this->_lockStructure		= false;
+    	$this->_lockWindows			= false;
+    	$this->_revisionsPassword	= '';
+    	$this->_workbookPassword	= '';
+    }
+
+    /**
+     * Is some sort of dcument security enabled?
+     *
+     * @return boolean
+     */
+    function isSecurityEnabled() {
+    	return 	$this->_lockRevision ||
+		    	$this->_lockStructure ||
+		    	$this->_lockWindows;
+    }
+
+    /**
+     * Get LockRevision
+     *
+     * @return boolean
+     */
+    function getLockRevision() {
+    	return $this->_lockRevision;
+    }
+
+    /**
+     * Set LockRevision
+     *
+     * @param boolean $pValue
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setLockRevision($pValue = false) {
+    	$this->_lockRevision = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get LockStructure
+     *
+     * @return boolean
+     */
+    function getLockStructure() {
+    	return $this->_lockStructure;
+    }
+
+    /**
+     * Set LockStructure
+     *
+     * @param boolean $pValue
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setLockStructure($pValue = false) {
+		$this->_lockStructure = $pValue;
+		return $this;
+    }
+
+    /**
+     * Get LockWindows
+     *
+     * @return boolean
+     */
+    function getLockWindows() {
+    	return $this->_lockWindows;
+    }
+
+    /**
+     * Set LockWindows
+     *
+     * @param boolean $pValue
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setLockWindows($pValue = false) {
+    	$this->_lockWindows = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get RevisionsPassword (hashed)
+     *
+     * @return string
+     */
+    function getRevisionsPassword() {
+    	return $this->_revisionsPassword;
+    }
+
+    /**
+     * Set RevisionsPassword
+     *
+     * @param string 	$pValue
+     * @param boolean 	$pAlreadyHashed If the password has already been hashed, set this to true
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setRevisionsPassword($pValue = '', $pAlreadyHashed = false) {
+    	if (!$pAlreadyHashed) {
+    		$pValue = PHPExcel_Shared_PasswordHasher::hashPassword($pValue);
+    	}
+    	$this->_revisionsPassword = $pValue;
+    	return $this;
+    }
+
+    /**
+     * Get WorkbookPassword (hashed)
+     *
+     * @return string
+     */
+    function getWorkbookPassword() {
+    	return $this->_workbookPassword;
+    }
+
+    /**
+     * Set WorkbookPassword
+     *
+     * @param string 	$pValue
+     * @param boolean 	$pAlreadyHashed If the password has already been hashed, set this to true
+     * @return PHPExcel_DocumentSecurity
+     */
+    function setWorkbookPassword($pValue = '', $pAlreadyHashed = false) {
+    	if (!$pAlreadyHashed) {
+    		$pValue = PHPExcel_Shared_PasswordHasher::hashPassword($pValue);
+    	}
+		$this->_workbookPassword = $pValue;
+		return $this;
+    }
+
+	/**
+	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
+	 */
+	public function __clone() {
+		$vars = get_object_vars($this);
+		foreach ($vars as $key => $value) {
+			if (is_object($value)) {
+				$this->$key = clone $value;
+			} else {
+				$this->$key = $value;
+			}
+		}
+	}
+}