diff --git a/.drone.yml b/.drone.yml
index 434a0797bed..d5f2fae702d 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -53,6 +53,13 @@ steps:
       - ./libraries/vendor/bin/phpcs --extensions=php -p --standard=ruleset.xml .
       - echo $(date)
 
+  - name: phan
+    image: joomlaprojects/docker-images:php7.4-ast
+    depends_on: [ phpcs ]
+    failure: ignore
+    commands:
+      - ./libraries/vendor/bin/phan
+
   - name: npm
     image: node:16-bullseye-slim
     depends_on: [ phpcs ]
@@ -517,6 +524,6 @@ trigger:
 
 ---
 kind: signature
-hmac: 05c1f15cfad7564a9479535f7b0727b63056f9b38f66453cbefab877d7db52b9
+hmac: f496f213481b3afcec73da651fc838af21f76950954daac599e665ceb382cc2d
 
 ...
diff --git a/.phan/config.php b/.phan/config.php
new file mode 100644
index 00000000000..e8873f0ff87
--- /dev/null
+++ b/.phan/config.php
@@ -0,0 +1,357 @@
+<?php
+
+/**
+ * This configuration file was automatically generated by 'phan --init --init-level=5'
+ *
+ * TODOs (added by 'phan --init'):
+ *
+ * - Go through this file and verify that there are no missing/unnecessary files/directories.
+ *   (E.g. this only includes direct composer dependencies - You may have to manually add indirect composer dependencies to 'directory_list')
+ * - Look at 'plugins' and add or remove plugins if appropriate (see https://github.com/phan/phan/tree/v4/.phan/plugins#plugins)
+ * - Add global suppressions for pre-existing issues to suppress_issue_types (https://github.com/phan/phan/wiki/Tutorial-for-Analyzing-a-Large-Sloppy-Code-Base)
+ *   - Consider setting up a baseline if there are a large number of pre-existing issues (see `phan --extended-help`)
+ *
+ * This configuration will be read and overlaid on top of the
+ * default configuration. Command line arguments will be applied
+ * after this file is read.
+ *
+ * @see https://github.com/phan/phan/wiki/Phan-Config-Settings for all configurable options
+ * @see https://github.com/phan/phan/tree/v4/src/Phan/Config.php
+ *
+ * A Note About Paths
+ * ==================
+ *
+ * Files referenced from this file should be defined as
+ *
+ * ```
+ *   Config::projectPath('relative_path/to/file')
+ * ```
+ *
+ * where the relative path is relative to the root of the
+ * project which is defined as either the working directory
+ * of the phan executable or a path passed in via the CLI
+ * '-d' flag.
+ */
+
+use Phan\Issue;
+
+return [
+
+    // The PHP version that the codebase will be checked for compatibility against.
+    // For best results, the PHP binary used to run Phan should have the same PHP version.
+    // (Phan relies on Reflection for some types, param counts,
+    // and checks for undefined classes/methods/functions)
+    //
+    // Supported values: `'5.6'`, `'7.0'`, `'7.1'`, `'7.2'`, `'7.3'`, `'7.4'`, `null`.
+    // If this is set to `null`,
+    // then Phan assumes the PHP version which is closest to the minor version
+    // of the php executable used to execute Phan.
+    //
+    // Note that the **only** effect of choosing `'5.6'` is to infer that functions removed in php 7.0 exist.
+    // (See `backward_compatibility_checks` for additional options)
+    // Automatically inferred from composer.json requirement for "php" of "^7.2.5"
+    'target_php_version' => '7.2',
+
+    // If enabled, missing properties will be created when
+    // they are first seen. If false, we'll report an
+    // error message if there is an attempt to write
+    // to a class property that wasn't explicitly
+    // defined.
+    'allow_missing_properties' => true,
+
+    // If enabled, null can be cast to any type and any
+    // type can be cast to null. Setting this to true
+    // will cut down on false positives.
+    'null_casts_as_any_type' => true,
+
+    // If enabled, allow null to be cast as any array-like type.
+    //
+    // This is an incremental step in migrating away from `null_casts_as_any_type`.
+    // If `null_casts_as_any_type` is true, this has no effect.
+    'null_casts_as_array' => true,
+
+    // If enabled, allow any array-like type to be cast to null.
+    // This is an incremental step in migrating away from `null_casts_as_any_type`.
+    // If `null_casts_as_any_type` is true, this has no effect.
+    'array_casts_as_null' => true,
+
+    // If enabled, scalars (int, float, bool, string, null)
+    // are treated as if they can cast to each other.
+    // This does not affect checks of array keys. See `scalar_array_key_cast`.
+    'scalar_implicit_cast' => true,
+
+    // If enabled, any scalar array keys (int, string)
+    // are treated as if they can cast to each other.
+    // E.g. `array<int,stdClass>` can cast to `array<string,stdClass>` and vice versa.
+    // Normally, a scalar type such as int could only cast to/from int and mixed.
+    'scalar_array_key_cast' => true,
+
+    // If this has entries, scalars (int, float, bool, string, null)
+    // are allowed to perform the casts listed.
+    //
+    // E.g. `['int' => ['float', 'string'], 'float' => ['int'], 'string' => ['int'], 'null' => ['string']]`
+    // allows casting null to a string, but not vice versa.
+    // (subset of `scalar_implicit_cast`)
+    'scalar_implicit_partial' => [],
+
+    // If enabled, Phan will warn if **any** type in a method invocation's object
+    // is definitely not an object,
+    // or if **any** type in an invoked expression is not a callable.
+    // Setting this to true will introduce numerous false positives
+    // (and reveal some bugs).
+    'strict_method_checking' => false,
+
+    // If enabled, Phan will warn if **any** type of the object expression for a property access
+    // does not contain that property.
+    'strict_object_checking' => false,
+
+    // If enabled, Phan will warn if **any** type in the argument's union type
+    // cannot be cast to a type in the parameter's expected union type.
+    // Setting this to true will introduce numerous false positives
+    // (and reveal some bugs).
+    'strict_param_checking' => false,
+
+    // If enabled, Phan will warn if **any** type in a property assignment's union type
+    // cannot be cast to a type in the property's declared union type.
+    // Setting this to true will introduce numerous false positives
+    // (and reveal some bugs).
+    'strict_property_checking' => false,
+
+    // If enabled, Phan will warn if **any** type in a returned value's union type
+    // cannot be cast to the declared return type.
+    // Setting this to true will introduce numerous false positives
+    // (and reveal some bugs).
+    'strict_return_checking' => false,
+
+    // If true, seemingly undeclared variables in the global
+    // scope will be ignored.
+    //
+    // This is useful for projects with complicated cross-file
+    // globals that you have no hope of fixing.
+    'ignore_undeclared_variables_in_global_scope' => true,
+
+    // Set this to false to emit `PhanUndeclaredFunction` issues for internal functions that Phan has signatures for,
+    // but aren't available in the codebase, or from Reflection.
+    // (may lead to false positives if an extension isn't loaded)
+    //
+    // If this is true(default), then Phan will not warn.
+    //
+    // Even when this is false, Phan will still infer return values and check parameters of internal functions
+    // if Phan has the signatures.
+    'ignore_undeclared_functions_with_known_signatures' => true,
+
+    // Backwards Compatibility Checking. This is slow
+    // and expensive, but you should consider running
+    // it before upgrading your version of PHP to a
+    // new version that has backward compatibility
+    // breaks.
+    //
+    // If you are migrating from PHP 5 to PHP 7,
+    // you should also look into using
+    // [php7cc (no longer maintained)](https://github.com/sstalle/php7cc)
+    // and [php7mar](https://github.com/Alexia/php7mar),
+    // which have different backwards compatibility checks.
+    //
+    // If you are still using versions of php older than 5.6,
+    // `PHP53CompatibilityPlugin` may be worth looking into if you are not running
+    // syntax checks for php 5.3 through another method such as
+    // `InvokePHPNativeSyntaxCheckPlugin` (see .phan/plugins/README.md).
+    'backward_compatibility_checks' => false,
+
+    // If true, check to make sure the return type declared
+    // in the doc-block (if any) matches the return type
+    // declared in the method signature.
+    'check_docblock_signature_return_type_match' => true,
+
+    // This setting maps case-insensitive strings to union types.
+    //
+    // This is useful if a project uses phpdoc that differs from the phpdoc2 standard.
+    //
+    // If the corresponding value is the empty string,
+    // then Phan will ignore that union type (E.g. can ignore 'the' in `@return the value`)
+    //
+    // If the corresponding value is not empty,
+    // then Phan will act as though it saw the corresponding UnionTypes(s)
+    // when the keys show up in a UnionType of `@param`, `@return`, `@var`, `@property`, etc.
+    //
+    // This matches the **entire string**, not parts of the string.
+    // (E.g. `@return the|null` will still look for a class with the name `the`, but `@return the` will be ignored with the below setting)
+    //
+    // (These are not aliases, this setting is ignored outside of doc comments).
+    // (Phan does not check if classes with these names exist)
+    //
+    // Example setting: `['unknown' => '', 'number' => 'int|float', 'char' => 'string', 'long' => 'int', 'the' => '']`
+    'phpdoc_type_mapping' => [],
+
+    // Set to true in order to attempt to detect dead
+    // (unreferenced) code. Keep in mind that the
+    // results will only be a guess given that classes,
+    // properties, constants and methods can be referenced
+    // as variables (like `$class->$property` or
+    // `$class->$method()`) in ways that we're unable
+    // to make sense of.
+    //
+    // To more aggressively detect dead code,
+    // you may want to set `dead_code_detection_prefer_false_negative` to `false`.
+    'dead_code_detection' => false,
+
+    // Set to true in order to attempt to detect unused variables.
+    // `dead_code_detection` will also enable unused variable detection.
+    //
+    // This has a few known false positives, e.g. for loops or branches.
+    'unused_variable_detection' => false,
+
+    // Set to true in order to attempt to detect redundant and impossible conditions.
+    //
+    // This has some false positives involving loops,
+    // variables set in branches of loops, and global variables.
+    'redundant_condition_detection' => false,
+
+    // If enabled, Phan will act as though it's certain of real return types of a subset of internal functions,
+    // even if those return types aren't available in reflection (real types were taken from php 7.3 or 8.0-dev, depending on target_php_version).
+    //
+    // Note that with php 7 and earlier, php would return null or false for many internal functions if the argument types or counts were incorrect.
+    // As a result, enabling this setting with target_php_version 8.0 may result in false positives for `--redundant-condition-detection` when codebases also support php 7.x.
+    'assume_real_types_for_internal_functions' => false,
+
+    // If true, this runs a quick version of checks that takes less
+    // time at the cost of not running as thorough
+    // of an analysis. You should consider setting this
+    // to true only when you wish you had more **undiagnosed** issues
+    // to fix in your code base.
+    //
+    // In quick-mode the scanner doesn't rescan a function
+    // or a method's code block every time a call is seen.
+    // This means that the problem here won't be detected:
+    //
+    // ```php
+    // <?php
+    // function test($arg):int {
+    //     return $arg;
+    // }
+    // test("abc");
+    // ```
+    //
+    // This would normally generate:
+    //
+    // ```
+    // test.php:3 PhanTypeMismatchReturn Returning type string but test() is declared to return int
+    // ```
+    //
+    // The initial scan of the function's code block has no
+    // type information for `$arg`. It isn't until we see
+    // the call and rescan `test()`'s code block that we can
+    // detect that it is actually returning the passed in
+    // `string` instead of an `int` as declared.
+    'quick_mode' => false,
+
+    // Override to hardcode existence and types of (non-builtin) globals in the global scope.
+    // Class names should be prefixed with `\`.
+    //
+    // (E.g. `['_FOO' => '\FooClass', 'page' => '\PageClass', 'userId' => 'int']`)
+    'globals_type_map' => [],
+
+    // The minimum severity level to report on. This can be
+    // set to `Issue::SEVERITY_LOW`, `Issue::SEVERITY_NORMAL` or
+    // `Issue::SEVERITY_CRITICAL`. Setting it to only
+    // critical issues is a good place to start on a big
+    // sloppy mature code base.
+    'minimum_severity' => Issue::SEVERITY_NORMAL,
+
+    // Add any issue types (such as `'PhanUndeclaredMethod'`)
+    // to this list to inhibit them from being reported.
+    'suppress_issue_types' => ['PhanDeprecatedClass', 'PhanUndeclaredConstant','PhanDeprecatedFunction'],
+
+    // A regular expression to match files to be excluded
+    // from parsing and analysis and will not be read at all.
+    //
+    // This is useful for excluding groups of test or example
+    // directories/files, unanalyzable files, or files that
+    // can't be removed for whatever reason.
+    // (e.g. `'@Test\.php$@'`, or `'@vendor/.*/(tests|Tests)/@'`)
+    'exclude_file_regex' => '@^vendor/.*/(tests?|Tests?)/@',
+
+    // A list of files that will be excluded from parsing and analysis
+    // and will not be read at all.
+    //
+    // This is useful for excluding hopelessly unanalyzable
+    // files that can't be removed for whatever reason.
+    'exclude_file_list' => [
+        'administrator\components\com_joomlaupdate\finalisation.php'
+    ],
+
+    // A directory list that defines files that will be excluded
+    // from static analysis, but whose class and method
+    // information should be included.
+    //
+    // Generally, you'll want to include the directories for
+    // third-party code (such as "vendor/") in this list.
+    //
+    // n.b.: If you'd like to parse but not analyze 3rd
+    //       party code, directories containing that code
+    //       should be added to the `directory_list` as well as
+    //       to `exclude_analysis_directory_list`.
+    'exclude_analysis_directory_list' => [
+        'libraries/vendor/',
+        'libraries/php-encryption',
+        'libraries/phpass'
+    ],
+
+    // Enable this to enable checks of require/include statements referring to valid paths.
+    // The settings `include_paths` and `warn_about_relative_include_statement` affect the checks.
+    'enable_include_path_checks' => false,
+
+    // The number of processes to fork off during the analysis
+    // phase.
+    'processes' => 1,
+
+    // List of case-insensitive file extensions supported by Phan.
+    // (e.g. `['php', 'html', 'htm']`)
+    'analyzed_file_extensions' => [
+        'php',
+    ],
+
+    // You can put paths to stubs of internal extensions in this config option.
+    // If the corresponding extension is **not** loaded, then Phan will use the stubs instead.
+    // Phan will continue using its detailed type annotations,
+    // but load the constants, classes, functions, and classes (and their Reflection types)
+    // from these stub files (doubling as valid php files).
+    // Use a different extension from php to avoid accidentally loading these.
+    // The `tools/make_stubs` script can be used to generate your own stubs (compatible with php 7.0+ right now)
+    //
+    // (e.g. `['xdebug' => '.phan/internal_stubs/xdebug.phan_php']`)
+    'autoload_internal_extension_signatures' => [
+        'redis' => '.phan/redis.phan_php',
+        'memcached' => '.phan/memcached.phan_php',
+        'dom' => '.phan/dom.phan_php',
+    ],
+
+    // A list of plugin files to execute.
+    //
+    // Plugins which are bundled with Phan can be added here by providing their name (e.g. `'AlwaysReturnPlugin'`)
+    //
+    // Documentation about available bundled plugins can be found [here](https://github.com/phan/phan/tree/v4/.phan/plugins).
+    //
+    // Alternately, you can pass in the full path to a PHP file with the plugin's implementation (e.g. `'vendor/phan/phan/.phan/plugins/AlwaysReturnPlugin.php'`)
+    'plugins' => [],
+
+    // A list of directories that should be parsed for class and
+    // method information. After excluding the directories
+    // defined in `exclude_analysis_directory_list`, the remaining
+    // files will be statically analyzed for errors.
+    //
+    // Thus, both first-party and third-party code being used by
+    // your application should be included in this list.
+    'directory_list' => [
+        'libraries',
+        'libraries/vendor/joomla',
+        'administrator',
+        'components',
+        'plugins'
+    ],
+
+    // A list of individual files to include in analysis
+    // with a path relative to the root directory of the
+    // project.
+    'file_list' => [],
+];
diff --git a/.phan/dom.phan_php b/.phan/dom.phan_php
new file mode 100644
index 00000000000..ebb92e84dd1
--- /dev/null
+++ b/.phan/dom.phan_php
@@ -0,0 +1,418 @@
+<?php
+// These stubs were generated by the phan stub generator.
+// @phan-stub-for-extension dom@20031129
+
+namespace {
+class DOMAttr extends \DOMNode {
+
+    // properties
+    public $name;
+    public $ownerElement;
+    public $schemaTypeInfo;
+    public $specified;
+    public $value;
+
+    // methods
+    public function isId() {}
+    public function __construct($name, $value = NULL) {}
+}
+
+class DOMCdataSection extends \DOMText {
+
+    // methods
+    public function __construct($value) {}
+}
+
+class DOMCharacterData extends \DOMNode {
+
+    // properties
+    public $data;
+    public $length;
+
+    // methods
+    public function substringData($offset, $count) {}
+    public function appendData($arg) {}
+    public function insertData($offset, $arg) {}
+    public function deleteData($offset, $count) {}
+    public function replaceData($offset, $count, $arg) {}
+}
+
+class DOMComment extends \DOMCharacterData {
+
+    // methods
+    public function __construct($value = NULL) {}
+}
+
+class DOMConfiguration {
+
+    // methods
+    public function setParameter($name, $value) {}
+    public function getParameter($name = NULL) {}
+    public function canSetParameter($name = NULL, $value = NULL) {}
+}
+
+class DOMDocument extends \DOMNode {
+
+    // properties
+    public $actualEncoding;
+    public $config;
+    public $doctype;
+    public $documentElement;
+    public $documentURI;
+    public $encoding;
+    public $formatOutput;
+    public $implementation;
+    public $preserveWhiteSpace;
+    public $recover;
+    public $resolveExternals;
+    public $standalone;
+    public $strictErrorChecking;
+    public $substituteEntities;
+    public $validateOnParse;
+    public $version;
+    public $xmlEncoding;
+    public $xmlStandalone;
+    public $xmlVersion;
+
+    // methods
+    public function createElement($tagName, $value = NULL) {}
+    public function createDocumentFragment() {}
+    public function createTextNode($data) {}
+    public function createComment($data) {}
+    public function createCDATASection($data) {}
+    public function createProcessingInstruction($target, $data) {}
+    public function createAttribute($name) {}
+    public function createEntityReference($name) {}
+    public function getElementsByTagName($tagName) {}
+    public function importNode(\DOMNode $importedNode, $deep) {}
+    public function createElementNS($namespaceURI, $qualifiedName, $value = NULL) {}
+    public function createAttributeNS($namespaceURI, $qualifiedName) {}
+    public function getElementsByTagNameNS($namespaceURI, $localName) {}
+    public function getElementById($elementId) {}
+    public function adoptNode(\DOMNode $source) {}
+    public function normalizeDocument() {}
+    public function renameNode(\DOMNode $node, $namespaceURI, $qualifiedName) {}
+    public function load($source, $options = NULL) {}
+    public function save($file) {}
+    public function loadXML($source, $options = NULL) {}
+    public function saveXML(\DOMNode $node = NULL, $options = NULL) {}
+    public function __construct($version = NULL, $encoding = NULL) {}
+    public function validate() {}
+    public function xinclude($options = NULL) {}
+    public function loadHTML($source, $options = NULL) {}
+    public function loadHTMLFile($source, $options = NULL) {}
+    public function saveHTML() {}
+    public function saveHTMLFile($file) {}
+    public function schemaValidate($filename) {}
+    public function schemaValidateSource($source) {}
+    public function relaxNGValidate($filename) {}
+    public function relaxNGValidateSource($source) {}
+    public function registerNodeClass($baseClass, $extendedClass) {}
+}
+
+class DOMDocumentFragment extends \DOMNode {
+
+    // properties
+    public $name;
+
+    // methods
+    public function __construct() {}
+    public function appendXML($data) {}
+}
+
+class DOMDocumentType extends \DOMNode {
+
+    // properties
+    public $publicId;
+    public $systemId;
+    public $name;
+    public $entities;
+    public $notations;
+    public $internalSubset;
+}
+
+class DOMDomError {
+}
+
+class DOMElement extends \DOMNode {
+
+    // properties
+    public $schemaTypeInfo;
+    public $tagName;
+
+    // methods
+    public function getAttribute($name) {}
+    public function setAttribute($name, $value) {}
+    public function removeAttribute($name) {}
+    public function getAttributeNode($name) {}
+    public function setAttributeNode(\DOMAttr $newAttr) {}
+    public function removeAttributeNode(\DOMAttr $oldAttr) {}
+    public function getElementsByTagName($name) {}
+    public function getAttributeNS($namespaceURI, $localName) {}
+    public function setAttributeNS($namespaceURI, $qualifiedName, $value) {}
+    public function removeAttributeNS($namespaceURI, $localName) {}
+    public function getAttributeNodeNS($namespaceURI, $localName) {}
+    public function setAttributeNodeNS(\DOMAttr $newAttr) {}
+    public function getElementsByTagNameNS($namespaceURI, $localName) {}
+    public function hasAttribute($name) {}
+    public function hasAttributeNS($namespaceURI, $localName) {}
+    public function setIdAttribute($name, $isId) {}
+    public function setIdAttributeNS($namespaceURI, $localName, $isId) {}
+    public function setIdAttributeNode(\DOMAttr $attr, $isId) {}
+    public function __construct($name, $value = NULL, $uri = NULL) {}
+}
+
+class DOMEntity extends \DOMNode {
+
+    // properties
+    public $publicId;
+    public $systemId;
+    public $notationName;
+    public $actualEncoding;
+    public $encoding;
+    public $version;
+}
+
+class DOMEntityReference extends \DOMNode {
+
+    // properties
+    public $name;
+
+    // methods
+    public function __construct($name) {}
+}
+
+class DOMErrorHandler {
+
+    // methods
+    public function handleError(\DOMDomError $error) {}
+}
+
+final class DOMException extends \Exception {
+
+    // properties
+    public $code;
+    public $message;
+    public $file;
+    public $line;
+}
+
+class DOMImplementation {
+
+    // properties
+    public $name;
+
+    // methods
+    public function getFeature($feature, $version) {}
+    public function hasFeature() {}
+    public function createDocumentType($qualifiedName, $publicId, $systemId) {}
+    public function createDocument($namespaceURI, $qualifiedName, \DOMDocumentType $docType) {}
+}
+
+class DOMImplementationList {
+
+    // methods
+    public function item($index) {}
+}
+
+class DOMImplementationSource {
+
+    // methods
+    public function getDomimplementation($features) {}
+    public function getDomimplementations($features) {}
+}
+
+class DOMLocator {
+}
+
+class DOMNameList {
+
+    // methods
+    public function getName($index) {}
+    public function getNamespaceURI($index) {}
+}
+
+class DOMNameSpaceNode {
+}
+
+class DOMNamedNodeMap implements \Traversable {
+
+    // properties
+    public $length;
+
+    // methods
+    public function getNamedItem($name) {}
+    public function setNamedItem(\DOMNode $arg) {}
+    public function removeNamedItem($name = NULL) {}
+    public function item($index = NULL) {}
+    public function getNamedItemNS($namespaceURI = NULL, $localName = NULL) {}
+    public function setNamedItemNS(\DOMNode $arg = NULL) {}
+    public function removeNamedItemNS($namespaceURI = NULL, $localName = NULL) {}
+}
+
+class DOMNode {
+
+    // properties
+    public $nodeName;
+    public $nodeValue;
+    public $nodeType;
+    public $parentNode;
+    public $childNodes;
+    public $firstChild;
+    public $lastChild;
+    public $previousSibling;
+    public $nextSibling;
+    public $attributes;
+    public $ownerDocument;
+    public $namespaceURI;
+    public $prefix;
+    public $localName;
+    public $baseURI;
+    public $textContent;
+
+    // methods
+    public function insertBefore(\DOMNode $newChild, \DOMNode $refChild = NULL) {}
+    public function replaceChild(\DOMNode $newChild, \DOMNode $oldChild) {}
+    public function removeChild(\DOMNode $oldChild) {}
+    public function appendChild(\DOMNode $newChild) {}
+    public function hasChildNodes() {}
+    public function cloneNode($deep = NULL) {}
+    public function normalize() {}
+    public function isSupported($feature, $version) {}
+    public function hasAttributes() {}
+    public function compareDocumentPosition(\DOMNode $other) {}
+    public function isSameNode(\DOMNode $other) {}
+    public function lookupPrefix($namespaceURI) {}
+    public function isDefaultNamespace($namespaceURI) {}
+    public function lookupNamespaceUri($prefix) {}
+    public function isEqualNode(\DOMNode $arg) {}
+    public function getFeature($feature, $version) {}
+    public function setUserData($key, $data, $handler) {}
+    public function getUserData($key) {}
+    public function getNodePath() {}
+    public function getLineNo() {}
+    public function C14N($exclusive = NULL, $with_comments = NULL, array $xpath = NULL, array $ns_prefixes = NULL) {}
+    public function C14NFile($uri, $exclusive = NULL, $with_comments = NULL, array $xpath = NULL, array $ns_prefixes = NULL) {}
+}
+
+class DOMNodeList implements \Traversable {
+
+    // properties
+    public $length;
+
+    // methods
+    public function item($index) {}
+}
+
+class DOMNotation extends \DOMNode {
+
+    // properties
+    public $publicId;
+    public $systemId;
+}
+
+class DOMProcessingInstruction extends \DOMNode {
+
+    // properties
+    public $target;
+    public $data;
+
+    // methods
+    public function __construct($name, $value = NULL) {}
+}
+
+class DOMStringExtend {
+
+    // methods
+    public function findOffset16($offset32) {}
+    public function findOffset32($offset16) {}
+}
+
+class DOMStringList {
+
+    // methods
+    public function item($index) {}
+}
+
+class DOMText extends \DOMCharacterData {
+
+    // properties
+    public $wholeText;
+
+    // methods
+    public function splitText($offset) {}
+    public function isWhitespaceInElementContent() {}
+    public function isElementContentWhitespace() {}
+    public function replaceWholeText($content) {}
+    public function __construct($value = NULL) {}
+}
+
+class DOMTypeinfo {
+}
+
+class DOMUserDataHandler {
+
+    // methods
+    public function handle() {}
+}
+
+class DOMXPath {
+
+    // properties
+    public $document;
+
+    // methods
+    public function __construct(\DOMDocument $doc) {}
+    public function registerNamespace($prefix, $uri) {}
+    public function query($expr, \DOMNode $context = NULL, $registerNodeNS = NULL) {}
+    public function evaluate($expr, \DOMNode $context = NULL, $registerNodeNS = NULL) {}
+    public function registerPhpFunctions() {}
+}
+
+function dom_import_simplexml($node) {}
+const DOMSTRING_SIZE_ERR = 2;
+const DOM_HIERARCHY_REQUEST_ERR = 3;
+const DOM_INDEX_SIZE_ERR = 1;
+const DOM_INUSE_ATTRIBUTE_ERR = 10;
+const DOM_INVALID_ACCESS_ERR = 15;
+const DOM_INVALID_CHARACTER_ERR = 5;
+const DOM_INVALID_MODIFICATION_ERR = 13;
+const DOM_INVALID_STATE_ERR = 11;
+const DOM_NAMESPACE_ERR = 14;
+const DOM_NOT_FOUND_ERR = 8;
+const DOM_NOT_SUPPORTED_ERR = 9;
+const DOM_NO_DATA_ALLOWED_ERR = 6;
+const DOM_NO_MODIFICATION_ALLOWED_ERR = 7;
+const DOM_PHP_ERR = 0;
+const DOM_SYNTAX_ERR = 12;
+const DOM_VALIDATION_ERR = 16;
+const DOM_WRONG_DOCUMENT_ERR = 4;
+const XML_ATTRIBUTE_CDATA = 1;
+const XML_ATTRIBUTE_DECL_NODE = 16;
+const XML_ATTRIBUTE_ENTITY = 6;
+const XML_ATTRIBUTE_ENUMERATION = 9;
+const XML_ATTRIBUTE_ID = 2;
+const XML_ATTRIBUTE_IDREF = 3;
+const XML_ATTRIBUTE_IDREFS = 4;
+const XML_ATTRIBUTE_NMTOKEN = 7;
+const XML_ATTRIBUTE_NMTOKENS = 8;
+const XML_ATTRIBUTE_NODE = 2;
+const XML_ATTRIBUTE_NOTATION = 10;
+const XML_CDATA_SECTION_NODE = 4;
+const XML_COMMENT_NODE = 8;
+const XML_DOCUMENT_FRAG_NODE = 11;
+const XML_DOCUMENT_NODE = 9;
+const XML_DOCUMENT_TYPE_NODE = 10;
+const XML_DTD_NODE = 14;
+const XML_ELEMENT_DECL_NODE = 15;
+const XML_ELEMENT_NODE = 1;
+const XML_ENTITY_DECL_NODE = 17;
+const XML_ENTITY_NODE = 6;
+const XML_ENTITY_REF_NODE = 5;
+const XML_HTML_DOCUMENT_NODE = 13;
+const XML_LOCAL_NAMESPACE = 18;
+const XML_NAMESPACE_DECL_NODE = 18;
+const XML_NOTATION_NODE = 12;
+const XML_PI_NODE = 7;
+const XML_TEXT_NODE = 3;
+}
diff --git a/.phan/memcached.phan_php b/.phan/memcached.phan_php
new file mode 100644
index 00000000000..8fe248bb676
--- /dev/null
+++ b/.phan/memcached.phan_php
@@ -0,0 +1,180 @@
+<?php
+// These stubs were generated by the phan stub generator.
+// @phan-stub-for-extension memcached@3.0.3
+
+namespace {
+class Memcached {
+
+    // constants
+    public const LIBMEMCACHED_VERSION_HEX = 16777240;
+    public const OPT_COMPRESSION = -1001;
+    public const OPT_COMPRESSION_TYPE = -1004;
+    public const OPT_PREFIX_KEY = -1002;
+    public const OPT_SERIALIZER = -1003;
+    public const OPT_USER_FLAGS = -1006;
+    public const OPT_STORE_RETRY_COUNT = -1005;
+    public const HAVE_IGBINARY = false;
+    public const HAVE_JSON = false;
+    public const HAVE_MSGPACK = false;
+    public const HAVE_SESSION = true;
+    public const HAVE_SASL = true;
+    public const OPT_HASH = 2;
+    public const HASH_DEFAULT = 0;
+    public const HASH_MD5 = 1;
+    public const HASH_CRC = 2;
+    public const HASH_FNV1_64 = 3;
+    public const HASH_FNV1A_64 = 4;
+    public const HASH_FNV1_32 = 5;
+    public const HASH_FNV1A_32 = 6;
+    public const HASH_HSIEH = 7;
+    public const HASH_MURMUR = 8;
+    public const OPT_DISTRIBUTION = 9;
+    public const DISTRIBUTION_MODULA = 0;
+    public const DISTRIBUTION_CONSISTENT = 1;
+    public const DISTRIBUTION_VIRTUAL_BUCKET = 6;
+    public const OPT_LIBKETAMA_COMPATIBLE = 16;
+    public const OPT_LIBKETAMA_HASH = 17;
+    public const OPT_TCP_KEEPALIVE = 32;
+    public const OPT_BUFFER_WRITES = 10;
+    public const OPT_BINARY_PROTOCOL = 18;
+    public const OPT_NO_BLOCK = 0;
+    public const OPT_TCP_NODELAY = 1;
+    public const OPT_SOCKET_SEND_SIZE = 4;
+    public const OPT_SOCKET_RECV_SIZE = 5;
+    public const OPT_CONNECT_TIMEOUT = 14;
+    public const OPT_RETRY_TIMEOUT = 15;
+    public const OPT_DEAD_TIMEOUT = 36;
+    public const OPT_SEND_TIMEOUT = 19;
+    public const OPT_RECV_TIMEOUT = 20;
+    public const OPT_POLL_TIMEOUT = 8;
+    public const OPT_CACHE_LOOKUPS = 6;
+    public const OPT_SERVER_FAILURE_LIMIT = 21;
+    public const OPT_AUTO_EJECT_HOSTS = 28;
+    public const OPT_HASH_WITH_PREFIX_KEY = 25;
+    public const OPT_NOREPLY = 26;
+    public const OPT_SORT_HOSTS = 12;
+    public const OPT_VERIFY_KEY = 13;
+    public const OPT_USE_UDP = 27;
+    public const OPT_NUMBER_OF_REPLICAS = 29;
+    public const OPT_RANDOMIZE_REPLICA_READ = 30;
+    public const OPT_REMOVE_FAILED_SERVERS = 35;
+    public const OPT_SERVER_TIMEOUT_LIMIT = 37;
+    public const RES_SUCCESS = 0;
+    public const RES_FAILURE = 1;
+    public const RES_HOST_LOOKUP_FAILURE = 2;
+    public const RES_UNKNOWN_READ_FAILURE = 7;
+    public const RES_PROTOCOL_ERROR = 8;
+    public const RES_CLIENT_ERROR = 9;
+    public const RES_SERVER_ERROR = 10;
+    public const RES_WRITE_FAILURE = 5;
+    public const RES_DATA_EXISTS = 12;
+    public const RES_NOTSTORED = 14;
+    public const RES_NOTFOUND = 16;
+    public const RES_PARTIAL_READ = 18;
+    public const RES_SOME_ERRORS = 19;
+    public const RES_NO_SERVERS = 20;
+    public const RES_END = 21;
+    public const RES_ERRNO = 26;
+    public const RES_BUFFERED = 32;
+    public const RES_TIMEOUT = 31;
+    public const RES_BAD_KEY_PROVIDED = 33;
+    public const RES_STORED = 15;
+    public const RES_DELETED = 22;
+    public const RES_STAT = 24;
+    public const RES_ITEM = 25;
+    public const RES_NOT_SUPPORTED = 28;
+    public const RES_FETCH_NOTFINISHED = 30;
+    public const RES_SERVER_MARKED_DEAD = 35;
+    public const RES_UNKNOWN_STAT_KEY = 36;
+    public const RES_INVALID_HOST_PROTOCOL = 34;
+    public const RES_MEMORY_ALLOCATION_FAILURE = 17;
+    public const RES_CONNECTION_SOCKET_CREATE_FAILURE = 11;
+    public const RES_E2BIG = 37;
+    public const RES_KEY_TOO_BIG = 39;
+    public const RES_SERVER_TEMPORARILY_DISABLED = 47;
+    public const RES_SERVER_MEMORY_ALLOCATION_FAILURE = 48;
+    public const RES_AUTH_PROBLEM = 40;
+    public const RES_AUTH_FAILURE = 41;
+    public const RES_AUTH_CONTINUE = 42;
+    public const RES_PAYLOAD_FAILURE = -1001;
+    public const SERIALIZER_PHP = 1;
+    public const SERIALIZER_IGBINARY = 2;
+    public const SERIALIZER_JSON = 3;
+    public const SERIALIZER_JSON_ARRAY = 4;
+    public const SERIALIZER_MSGPACK = 5;
+    public const COMPRESSION_FASTLZ = 2;
+    public const COMPRESSION_ZLIB = 1;
+    public const GET_PRESERVE_ORDER = 1;
+    public const GET_EXTENDED = 2;
+    public const GET_ERROR_RETURN_VALUE = false;
+
+    // methods
+    public function __construct($persistent_id = NULL, $callback = NULL) {}
+    public function getResultCode() {}
+    public function getResultMessage() {}
+    public function get($key, $cache_cb = NULL, $get_flags = NULL) {}
+    public function getByKey($server_key, $key, $cache_cb = NULL, $get_flags = NULL) {}
+    public function getMulti(array $keys, $get_flags = NULL) {}
+    public function getMultiByKey($server_key, array $keys, $get_flags = NULL) {}
+    public function getDelayed(array $keys, $with_cas = NULL, $value_cb = NULL) {}
+    public function getDelayedByKey($server_key, array $keys, $with_cas = NULL, $value_cb = NULL) {}
+    public function fetch() {}
+    public function fetchAll() {}
+    public function set($key, $value, $expiration = NULL) {}
+    public function setByKey($server_key, $key, $value, $expiration = NULL) {}
+    public function touch($key, $expiration) {}
+    public function touchByKey($server_key, $key, $expiration) {}
+    public function setMulti(array $items, $expiration = NULL) {}
+    public function setMultiByKey($server_key, array $items, $expiration = NULL) {}
+    public function cas($cas_token, $key, $value, $expiration = NULL) {}
+    public function casByKey($cas_token, $server_key, $key, $value, $expiration = NULL) {}
+    public function add($key, $value, $expiration = NULL) {}
+    public function addByKey($server_key, $key, $value, $expiration = NULL) {}
+    public function append($key, $value, $expiration = NULL) {}
+    public function appendByKey($server_key, $key, $value, $expiration = NULL) {}
+    public function prepend($key, $value, $expiration = NULL) {}
+    public function prependByKey($server_key, $key, $value, $expiration = NULL) {}
+    public function replace($key, $value, $expiration = NULL) {}
+    public function replaceByKey($server_key, $key, $value, $expiration = NULL) {}
+    public function delete($key, $time = NULL) {}
+    public function deleteMulti($keys, $time = NULL) {}
+    public function deleteByKey($server_key, $key, $time = NULL) {}
+    public function deleteMultiByKey($server_key, $keys, $time = NULL) {}
+    public function increment($key, $offset = NULL, $initial_value = NULL, $expiry = NULL) {}
+    public function decrement($key, $offset = NULL, $initial_value = NULL, $expiry = NULL) {}
+    public function incrementByKey($server_key, $key, $offset = NULL, $initial_value = NULL, $expiry = NULL) {}
+    public function decrementByKey($server_key, $key, $offset = NULL, $initial_value = NULL, $expiry = NULL) {}
+    public function addServer($host, $port, $weight = NULL) {}
+    public function addServers(array $servers) {}
+    public function getServerList() {}
+    public function getServerByKey($server_key) {}
+    public function resetServerList() {}
+    public function quit() {}
+    public function flushBuffers() {}
+    public function getLastErrorMessage() {}
+    public function getLastErrorCode() {}
+    public function getLastErrorErrno() {}
+    public function getLastDisconnectedServer() {}
+    public function getStats($args) {}
+    public function getVersion() {}
+    public function getAllKeys() {}
+    public function flush($delay = NULL) {}
+    public function getOption($option) {}
+    public function setOption($option, $value) {}
+    public function setOptions($options) {}
+    public function setBucket($host_map, $forward_map, $replicas) {}
+    public function setSaslAuthData($username, $password) {}
+    public function isPersistent() {}
+    public function isPristine() {}
+}
+
+class MemcachedException extends \RuntimeException {
+
+    // properties
+    public $message;
+    public $code;
+    public $file;
+    public $line;
+}
+
+}
diff --git a/.phan/redis.phan_php b/.phan/redis.phan_php
new file mode 100644
index 00000000000..29965bab4b1
--- /dev/null
+++ b/.phan/redis.phan_php
@@ -0,0 +1,490 @@
+<?php
+// These stubs were generated by the phan stub generator.
+// @phan-stub-for-extension redis@3.1.4
+
+namespace {
+class Redis {
+
+    // constants
+    public const REDIS_NOT_FOUND = 0;
+    public const REDIS_STRING = 1;
+    public const REDIS_SET = 2;
+    public const REDIS_LIST = 3;
+    public const REDIS_ZSET = 4;
+    public const REDIS_HASH = 5;
+    public const PIPELINE = 2;
+    public const ATOMIC = 0;
+    public const MULTI = 1;
+    public const OPT_SERIALIZER = 1;
+    public const OPT_PREFIX = 2;
+    public const OPT_READ_TIMEOUT = 3;
+    public const SERIALIZER_NONE = 0;
+    public const SERIALIZER_PHP = 1;
+    public const OPT_SCAN = 4;
+    public const SCAN_RETRY = 1;
+    public const SCAN_NORETRY = 0;
+    public const AFTER = 'after';
+    public const BEFORE = 'before';
+
+    // methods
+    public function __construct() {}
+    public function __destruct() {}
+    public function connect() {}
+    public function pconnect() {}
+    public function close() {}
+    public function ping() {}
+    public function echo() {}
+    public function get() {}
+    public function set() {}
+    public function setex() {}
+    public function psetex() {}
+    public function setnx() {}
+    public function getSet() {}
+    public function randomKey() {}
+    public function renameKey() {}
+    public function renameNx() {}
+    public function getMultiple() {}
+    public function exists() {}
+    public function delete() {}
+    public function incr() {}
+    public function incrBy() {}
+    public function incrByFloat() {}
+    public function decr() {}
+    public function decrBy() {}
+    public function type() {}
+    public function append() {}
+    public function getRange() {}
+    public function setRange() {}
+    public function getBit() {}
+    public function setBit() {}
+    public function strlen() {}
+    public function getKeys() {}
+    public function sort() {}
+    public function sortAsc() {}
+    public function sortAscAlpha() {}
+    public function sortDesc() {}
+    public function sortDescAlpha() {}
+    public function lPush() {}
+    public function rPush() {}
+    public function lPushx() {}
+    public function rPushx() {}
+    public function lPop() {}
+    public function rPop() {}
+    public function blPop() {}
+    public function brPop() {}
+    public function lSize() {}
+    public function lRemove() {}
+    public function listTrim() {}
+    public function lGet() {}
+    public function lGetRange() {}
+    public function lSet() {}
+    public function lInsert() {}
+    public function sAdd() {}
+    public function sAddArray() {}
+    public function sSize() {}
+    public function sRemove() {}
+    public function sMove() {}
+    public function sPop() {}
+    public function sRandMember() {}
+    public function sContains() {}
+    public function sMembers() {}
+    public function sInter() {}
+    public function sInterStore() {}
+    public function sUnion() {}
+    public function sUnionStore() {}
+    public function sDiff() {}
+    public function sDiffStore() {}
+    public function setTimeout() {}
+    public function save() {}
+    public function bgSave() {}
+    public function lastSave() {}
+    public function flushDB() {}
+    public function flushAll() {}
+    public function dbSize() {}
+    public function auth() {}
+    public function ttl() {}
+    public function pttl() {}
+    public function persist() {}
+    public function info() {}
+    public function select() {}
+    public function move() {}
+    public function bgrewriteaof() {}
+    public function slaveof() {}
+    public function object() {}
+    public function bitop() {}
+    public function bitcount() {}
+    public function bitpos() {}
+    public function mset() {}
+    public function msetnx() {}
+    public function rpoplpush() {}
+    public function brpoplpush() {}
+    public function zAdd() {}
+    public function zDelete() {}
+    public function zRange() {}
+    public function zRevRange() {}
+    public function zRangeByScore() {}
+    public function zRevRangeByScore() {}
+    public function zRangeByLex() {}
+    public function zRevRangeByLex() {}
+    public function zLexCount() {}
+    public function zRemRangeByLex() {}
+    public function zCount() {}
+    public function zDeleteRangeByScore() {}
+    public function zDeleteRangeByRank() {}
+    public function zCard() {}
+    public function zScore() {}
+    public function zRank() {}
+    public function zRevRank() {}
+    public function zInter() {}
+    public function zUnion() {}
+    public function zIncrBy() {}
+    public function expireAt() {}
+    public function pexpire() {}
+    public function pexpireAt() {}
+    public function hGet() {}
+    public function hSet() {}
+    public function hSetNx() {}
+    public function hDel() {}
+    public function hLen() {}
+    public function hKeys() {}
+    public function hVals() {}
+    public function hGetAll() {}
+    public function hExists() {}
+    public function hIncrBy() {}
+    public function hIncrByFloat() {}
+    public function hMset() {}
+    public function hMget() {}
+    public function hStrLen() {}
+    public function multi() {}
+    public function discard() {}
+    public function exec() {}
+    public function pipeline() {}
+    public function watch() {}
+    public function unwatch() {}
+    public function publish() {}
+    public function subscribe() {}
+    public function psubscribe() {}
+    public function unsubscribe() {}
+    public function punsubscribe() {}
+    public function time() {}
+    public function role() {}
+    public function eval() {}
+    public function evalsha() {}
+    public function script() {}
+    public function debug() {}
+    public function dump() {}
+    public function restore() {}
+    public function migrate() {}
+    public function getLastError() {}
+    public function clearLastError() {}
+    public function _prefix() {}
+    public function _serialize() {}
+    public function _unserialize() {}
+    public function client() {}
+    public function command() {}
+    public function scan(&$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function hscan($str_key, &$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function zscan($str_key, &$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function sscan($str_key, &$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function pfadd() {}
+    public function pfcount() {}
+    public function pfmerge() {}
+    public function getOption() {}
+    public function setOption() {}
+    public function config() {}
+    public function slowlog() {}
+    public function rawcommand() {}
+    public function geoadd() {}
+    public function geohash() {}
+    public function geopos() {}
+    public function geodist() {}
+    public function georadius() {}
+    public function georadiusbymember() {}
+    public function getHost() {}
+    public function getPort() {}
+    public function getDBNum() {}
+    public function getTimeout() {}
+    public function getReadTimeout() {}
+    public function getPersistentID() {}
+    public function getAuth() {}
+    public function isConnected() {}
+    public function getMode() {}
+    public function wait() {}
+    public function pubsub() {}
+    public function open() {}
+    public function popen() {}
+    public function lLen() {}
+    public function sGetMembers() {}
+    public function mget() {}
+    public function expire() {}
+    public function zunionstore() {}
+    public function zinterstore() {}
+    public function zRemove() {}
+    public function zRem() {}
+    public function zRemoveRangeByScore() {}
+    public function zRemRangeByScore() {}
+    public function zRemRangeByRank() {}
+    public function zSize() {}
+    public function substr() {}
+    public function rename() {}
+    public function del() {}
+    public function keys() {}
+    public function lrem() {}
+    public function ltrim() {}
+    public function lindex() {}
+    public function lrange() {}
+    public function scard() {}
+    public function srem() {}
+    public function sismember() {}
+    public function zReverseRange() {}
+    public function sendEcho() {}
+    public function evaluate() {}
+    public function evaluateSha() {}
+}
+
+class RedisArray {
+
+    // methods
+    public function __construct() {}
+    public function __call($function_name, $arguments) {}
+    public function _hosts() {}
+    public function _target() {}
+    public function _instance() {}
+    public function _function() {}
+    public function _distributor() {}
+    public function _rehash() {}
+    public function select() {}
+    public function info() {}
+    public function ping() {}
+    public function flushdb() {}
+    public function flushall() {}
+    public function mget() {}
+    public function mset() {}
+    public function del() {}
+    public function getOption() {}
+    public function setOption() {}
+    public function keys() {}
+    public function save() {}
+    public function bgsave() {}
+    public function multi() {}
+    public function exec() {}
+    public function discard() {}
+    public function unwatch() {}
+    public function delete() {}
+    public function getMultiple() {}
+}
+
+class RedisCluster {
+
+    // constants
+    public const REDIS_NOT_FOUND = 0;
+    public const REDIS_STRING = 1;
+    public const REDIS_SET = 2;
+    public const REDIS_LIST = 3;
+    public const REDIS_ZSET = 4;
+    public const REDIS_HASH = 5;
+    public const ATOMIC = 0;
+    public const MULTI = 1;
+    public const OPT_SERIALIZER = 1;
+    public const OPT_PREFIX = 2;
+    public const OPT_READ_TIMEOUT = 3;
+    public const SERIALIZER_NONE = 0;
+    public const SERIALIZER_PHP = 1;
+    public const OPT_SCAN = 4;
+    public const SCAN_RETRY = 1;
+    public const SCAN_NORETRY = 0;
+    public const OPT_SLAVE_FAILOVER = 5;
+    public const FAILOVER_NONE = 0;
+    public const FAILOVER_ERROR = 1;
+    public const FAILOVER_DISTRIBUTE = 2;
+    public const FAILOVER_DISTRIBUTE_SLAVES = 3;
+    public const AFTER = 'after';
+    public const BEFORE = 'before';
+
+    // methods
+    public function __construct() {}
+    public function close() {}
+    public function get() {}
+    public function set() {}
+    public function mget() {}
+    public function mset() {}
+    public function msetnx() {}
+    public function del() {}
+    public function setex() {}
+    public function psetex() {}
+    public function setnx() {}
+    public function getset() {}
+    public function exists() {}
+    public function keys() {}
+    public function type() {}
+    public function lpop() {}
+    public function rpop() {}
+    public function lset() {}
+    public function spop() {}
+    public function lpush() {}
+    public function rpush() {}
+    public function blpop() {}
+    public function brpop() {}
+    public function rpushx() {}
+    public function lpushx() {}
+    public function linsert() {}
+    public function lindex() {}
+    public function lrem() {}
+    public function brpoplpush() {}
+    public function rpoplpush() {}
+    public function llen() {}
+    public function scard() {}
+    public function smembers() {}
+    public function sismember() {}
+    public function sadd() {}
+    public function saddarray() {}
+    public function srem() {}
+    public function sunion() {}
+    public function sunionstore() {}
+    public function sinter() {}
+    public function sinterstore() {}
+    public function sdiff() {}
+    public function sdiffstore() {}
+    public function srandmember() {}
+    public function strlen() {}
+    public function persist() {}
+    public function ttl() {}
+    public function pttl() {}
+    public function zcard() {}
+    public function zcount() {}
+    public function zremrangebyscore() {}
+    public function zscore() {}
+    public function zadd() {}
+    public function zincrby() {}
+    public function hlen() {}
+    public function hkeys() {}
+    public function hvals() {}
+    public function hget() {}
+    public function hgetall() {}
+    public function hexists() {}
+    public function hincrby() {}
+    public function hset() {}
+    public function hsetnx() {}
+    public function hmget() {}
+    public function hmset() {}
+    public function hdel() {}
+    public function hincrbyfloat() {}
+    public function hstrlen() {}
+    public function dump() {}
+    public function zrank() {}
+    public function zrevrank() {}
+    public function incr() {}
+    public function decr() {}
+    public function incrby() {}
+    public function decrby() {}
+    public function incrbyfloat() {}
+    public function expire() {}
+    public function pexpire() {}
+    public function expireat() {}
+    public function pexpireat() {}
+    public function append() {}
+    public function getbit() {}
+    public function setbit() {}
+    public function bitop() {}
+    public function bitpos() {}
+    public function bitcount() {}
+    public function lget() {}
+    public function getrange() {}
+    public function ltrim() {}
+    public function lrange() {}
+    public function zremrangebyrank() {}
+    public function publish() {}
+    public function rename() {}
+    public function renamenx() {}
+    public function pfcount() {}
+    public function pfadd() {}
+    public function pfmerge() {}
+    public function setrange() {}
+    public function restore() {}
+    public function smove() {}
+    public function zrange() {}
+    public function zrevrange() {}
+    public function zrangebyscore() {}
+    public function zrevrangebyscore() {}
+    public function zrangebylex() {}
+    public function zrevrangebylex() {}
+    public function zlexcount() {}
+    public function zremrangebylex() {}
+    public function zunionstore() {}
+    public function zinterstore() {}
+    public function zrem() {}
+    public function sort() {}
+    public function object() {}
+    public function subscribe() {}
+    public function psubscribe() {}
+    public function unsubscribe() {}
+    public function punsubscribe() {}
+    public function eval() {}
+    public function evalsha() {}
+    public function scan(&$i_iterator, $str_node, $str_pattern = NULL, $i_count = NULL) {}
+    public function sscan($str_key, &$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function zscan($str_key, &$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function hscan($str_key, &$i_iterator, $str_pattern = NULL, $i_count = NULL) {}
+    public function getmode() {}
+    public function getlasterror() {}
+    public function clearlasterror() {}
+    public function getoption() {}
+    public function setoption() {}
+    public function _prefix() {}
+    public function _serialize() {}
+    public function _unserialize() {}
+    public function _masters() {}
+    public function _redir() {}
+    public function multi() {}
+    public function exec() {}
+    public function discard() {}
+    public function watch() {}
+    public function unwatch() {}
+    public function save() {}
+    public function bgsave() {}
+    public function flushdb() {}
+    public function flushall() {}
+    public function dbsize() {}
+    public function bgrewriteaof() {}
+    public function lastsave() {}
+    public function info() {}
+    public function role() {}
+    public function time() {}
+    public function randomkey() {}
+    public function ping() {}
+    public function echo() {}
+    public function command() {}
+    public function rawcommand() {}
+    public function cluster() {}
+    public function client() {}
+    public function config() {}
+    public function pubsub() {}
+    public function script() {}
+    public function slowlog() {}
+    public function geoadd() {}
+    public function geohash() {}
+    public function geopos() {}
+    public function geodist() {}
+    public function georadius() {}
+    public function georadiusbymember() {}
+}
+
+class RedisClusterException extends \Exception {
+
+    // properties
+    public $message;
+    public $code;
+    public $file;
+    public $line;
+}
+
+class RedisException extends \Exception {
+
+    // properties
+    public $message;
+    public $code;
+    public $file;
+    public $line;
+}
+
+}
diff --git a/build/build.php b/build/build.php
index fc07b8b63bf..9890c1989c9 100644
--- a/build/build.php
+++ b/build/build.php
@@ -61,6 +61,7 @@ function clean_checkout(string $dir)
     system('find . -name .github | xargs rm -rf -');
     system('find . -name .gitignore | xargs rm -rf -');
     system('find . -name .gitmodules | xargs rm -rf -');
+    system('find . -name .phan | xargs rm -rf -');
     system('find . -name .php-cs-fixer.dist.php | xargs rm -rf -');
     system('find . -name .scrutinizer.yml | xargs rm -rf -');
     system('find . -name .travis.yml | xargs rm -rf -');
@@ -386,6 +387,7 @@ $doNotPackage = array(
     '.editorconfig',
     '.github',
     '.gitignore',
+    '.phan',
     '.php-cs-fixer.dist.php',
     'acceptance.suite.yml',
     // Media Manager Node Assets
diff --git a/composer.json b/composer.json
index 937405bb220..04b8caf4139 100644
--- a/composer.json
+++ b/composer.json
@@ -114,7 +114,8 @@
         "codeception/module-rest": "^1.0",
         "codeception/module-webdriver": "^1.0",
         "codeception/module-phpbrowser": "^1.0",
-        "hoa/console": "^3.17"
+        "hoa/console": "^3.17",
+        "phan/phan": "^5.4"
     },
     "replace": {
         "paragonie/random_compat": "9.99.99"
diff --git a/composer.lock b/composer.lock
index 7cd4b27754b..a1f46f9bb64 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d9aeb137af8ceaf60f9d57ed6bf4f2fb",
+    "content-hash": "c61095e68a47e91539f9638afe58d7e0",
     "packages": [
         {
             "name": "algo26-matthias/idna-convert",
@@ -7753,6 +7753,51 @@
             ],
             "time": "2022-02-28T11:07:21+00:00"
         },
+        {
+            "name": "felixfbecker/advanced-json-rpc",
+            "version": "v3.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/felixfbecker/php-advanced-json-rpc.git",
+                "reference": "b5f37dbff9a8ad360ca341f3240dc1c168b45447"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/felixfbecker/php-advanced-json-rpc/zipball/b5f37dbff9a8ad360ca341f3240dc1c168b45447",
+                "reference": "b5f37dbff9a8ad360ca341f3240dc1c168b45447",
+                "shasum": ""
+            },
+            "require": {
+                "netresearch/jsonmapper": "^1.0 || ^2.0 || ^3.0 || ^4.0",
+                "php": "^7.1 || ^8.0",
+                "phpdocumentor/reflection-docblock": "^4.3.4 || ^5.0.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^7.0 || ^8.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "AdvancedJsonRpc\\": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "ISC"
+            ],
+            "authors": [
+                {
+                    "name": "Felix Becker",
+                    "email": "felix.b@outlook.com"
+                }
+            ],
+            "description": "A more advanced JSONRPC implementation",
+            "support": {
+                "issues": "https://github.com/felixfbecker/php-advanced-json-rpc/issues",
+                "source": "https://github.com/felixfbecker/php-advanced-json-rpc/tree/v3.2.1"
+            },
+            "time": "2021-06-11T22:34:44+00:00"
+        },
         {
             "name": "friendsofphp/php-cs-fixer",
             "version": "v3.4.0",
@@ -9062,6 +9107,51 @@
             },
             "time": "2022-04-13T08:02:27+00:00"
         },
+        {
+            "name": "microsoft/tolerant-php-parser",
+            "version": "v0.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/microsoft/tolerant-php-parser.git",
+                "reference": "6a965617cf484355048ac6d2d3de7b6ec93abb16"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/microsoft/tolerant-php-parser/zipball/6a965617cf484355048ac6d2d3de7b6ec93abb16",
+                "reference": "6a965617cf484355048ac6d2d3de7b6ec93abb16",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^8.5.15"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Microsoft\\PhpParser\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Rob Lourens",
+                    "email": "roblou@microsoft.com"
+                }
+            ],
+            "description": "Tolerant PHP-to-AST parser designed for IDE usage scenarios",
+            "support": {
+                "issues": "https://github.com/microsoft/tolerant-php-parser/issues",
+                "source": "https://github.com/microsoft/tolerant-php-parser/tree/v0.1.1"
+            },
+            "time": "2021-07-16T21:28:12+00:00"
+        },
         {
             "name": "myclabs/deep-copy",
             "version": "1.11.0",
@@ -9121,6 +9211,136 @@
             ],
             "time": "2022-03-03T13:19:32+00:00"
         },
+        {
+            "name": "netresearch/jsonmapper",
+            "version": "v4.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/cweiske/jsonmapper.git",
+                "reference": "8bbc021a8edb2e4a7ea2f8ad4fa9ec9dce2fcb8d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/cweiske/jsonmapper/zipball/8bbc021a8edb2e4a7ea2f8ad4fa9ec9dce2fcb8d",
+                "reference": "8bbc021a8edb2e4a7ea2f8ad4fa9ec9dce2fcb8d",
+                "shasum": ""
+            },
+            "require": {
+                "ext-json": "*",
+                "ext-pcre": "*",
+                "ext-reflection": "*",
+                "ext-spl": "*",
+                "php": ">=7.1"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~7.5 || ~8.0 || ~9.0",
+                "squizlabs/php_codesniffer": "~3.5"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "JsonMapper": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "OSL-3.0"
+            ],
+            "authors": [
+                {
+                    "name": "Christian Weiske",
+                    "email": "cweiske@cweiske.de",
+                    "homepage": "http://github.com/cweiske/jsonmapper/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Map nested JSON structures onto PHP classes",
+            "support": {
+                "email": "cweiske@cweiske.de",
+                "issues": "https://github.com/cweiske/jsonmapper/issues",
+                "source": "https://github.com/cweiske/jsonmapper/tree/v4.0.0"
+            },
+            "time": "2020-12-01T19:48:11+00:00"
+        },
+        {
+            "name": "phan/phan",
+            "version": "5.4.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phan/phan.git",
+                "reference": "fef40178a952bcfcc3f69b76989dd613c3d5c759"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phan/phan/zipball/fef40178a952bcfcc3f69b76989dd613c3d5c759",
+                "reference": "fef40178a952bcfcc3f69b76989dd613c3d5c759",
+                "shasum": ""
+            },
+            "require": {
+                "composer/semver": "^1.4|^2.0|^3.0",
+                "composer/xdebug-handler": "^2.0|^3.0",
+                "ext-filter": "*",
+                "ext-json": "*",
+                "ext-tokenizer": "*",
+                "felixfbecker/advanced-json-rpc": "^3.0.4",
+                "microsoft/tolerant-php-parser": "0.1.1",
+                "netresearch/jsonmapper": "^1.6.0|^2.0|^3.0|^4.0",
+                "php": "^7.2.0|^8.0.0",
+                "sabre/event": "^5.1.3",
+                "symfony/console": "^3.2|^4.0|^5.0|^6.0",
+                "symfony/polyfill-mbstring": "^1.11.0",
+                "symfony/polyfill-php80": "^1.20.0",
+                "tysonandre/var_representation_polyfill": "^0.0.2|^0.1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^8.5.0"
+            },
+            "suggest": {
+                "ext-ast": "Needed for parsing ASTs (unless --use-fallback-parser is used). 1.0.1+ is needed, 1.0.16+ is recommended.",
+                "ext-iconv": "Either iconv or mbstring is needed to ensure issue messages are valid utf-8",
+                "ext-igbinary": "Improves performance of polyfill when ext-ast is unavailable",
+                "ext-mbstring": "Either iconv or mbstring is needed to ensure issue messages are valid utf-8",
+                "ext-tokenizer": "Needed for fallback/polyfill parser support and file/line-based suppressions.",
+                "ext-var_representation": "Suggested for converting values to strings in issue messages"
+            },
+            "bin": [
+                "phan",
+                "phan_client",
+                "tocheckstyle"
+            ],
+            "type": "project",
+            "autoload": {
+                "psr-4": {
+                    "Phan\\": "src/Phan"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Tyson Andre"
+                },
+                {
+                    "name": "Rasmus Lerdorf"
+                },
+                {
+                    "name": "Andrew S. Morrison"
+                }
+            ],
+            "description": "A static analyzer for PHP",
+            "keywords": [
+                "analyzer",
+                "php",
+                "static"
+            ],
+            "support": {
+                "issues": "https://github.com/phan/phan/issues",
+                "source": "https://github.com/phan/phan/tree/5.4.1"
+            },
+            "time": "2022-08-26T00:49:07+00:00"
+        },
         {
             "name": "phar-io/manifest",
             "version": "2.0.3",
@@ -9350,6 +9570,166 @@
             },
             "time": "2022-05-03T12:16:34+00:00"
         },
+        {
+            "name": "phpdocumentor/reflection-common",
+            "version": "2.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
+                "reference": "1d01c49d4ed62f25aa84a747ad35d5a16924662b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/1d01c49d4ed62f25aa84a747ad35d5a16924662b",
+                "reference": "1d01c49d4ed62f25aa84a747ad35d5a16924662b",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-2.x": "2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jaap van Otterdijk",
+                    "email": "opensource@ijaap.nl"
+                }
+            ],
+            "description": "Common reflection classes used by phpdocumentor to reflect the code structure",
+            "homepage": "http://www.phpdoc.org",
+            "keywords": [
+                "FQSEN",
+                "phpDocumentor",
+                "phpdoc",
+                "reflection",
+                "static analysis"
+            ],
+            "support": {
+                "issues": "https://github.com/phpDocumentor/ReflectionCommon/issues",
+                "source": "https://github.com/phpDocumentor/ReflectionCommon/tree/2.x"
+            },
+            "time": "2020-06-27T09:03:43+00:00"
+        },
+        {
+            "name": "phpdocumentor/reflection-docblock",
+            "version": "5.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
+                "reference": "622548b623e81ca6d78b721c5e029f4ce664f170"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/622548b623e81ca6d78b721c5e029f4ce664f170",
+                "reference": "622548b623e81ca6d78b721c5e029f4ce664f170",
+                "shasum": ""
+            },
+            "require": {
+                "ext-filter": "*",
+                "php": "^7.2 || ^8.0",
+                "phpdocumentor/reflection-common": "^2.2",
+                "phpdocumentor/type-resolver": "^1.3",
+                "webmozart/assert": "^1.9.1"
+            },
+            "require-dev": {
+                "mockery/mockery": "~1.3.2",
+                "psalm/phar": "^4.8"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "5.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "me@mikevanriel.com"
+                },
+                {
+                    "name": "Jaap van Otterdijk",
+                    "email": "account@ijaap.nl"
+                }
+            ],
+            "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
+            "support": {
+                "issues": "https://github.com/phpDocumentor/ReflectionDocBlock/issues",
+                "source": "https://github.com/phpDocumentor/ReflectionDocBlock/tree/5.3.0"
+            },
+            "time": "2021-10-19T17:43:47+00:00"
+        },
+        {
+            "name": "phpdocumentor/type-resolver",
+            "version": "1.6.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/TypeResolver.git",
+                "reference": "77a32518733312af16a44300404e945338981de3"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/77a32518733312af16a44300404e945338981de3",
+                "reference": "77a32518733312af16a44300404e945338981de3",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2 || ^8.0",
+                "phpdocumentor/reflection-common": "^2.0"
+            },
+            "require-dev": {
+                "ext-tokenizer": "*",
+                "psalm/phar": "^4.8"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-1.x": "1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "me@mikevanriel.com"
+                }
+            ],
+            "description": "A PSR-5 based resolver of Class names, Types and Structural Element Names",
+            "support": {
+                "issues": "https://github.com/phpDocumentor/TypeResolver/issues",
+                "source": "https://github.com/phpDocumentor/TypeResolver/tree/1.6.1"
+            },
+            "time": "2022-03-15T21:29:03+00:00"
+        },
         {
             "name": "phpunit/php-code-coverage",
             "version": "7.0.15",
@@ -9887,6 +10267,72 @@
             },
             "time": "2019-03-08T08:55:37+00:00"
         },
+        {
+            "name": "sabre/event",
+            "version": "5.1.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sabre-io/event.git",
+                "reference": "d7da22897125d34d7eddf7977758191c06a74497"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sabre-io/event/zipball/d7da22897125d34d7eddf7977758191c06a74497",
+                "reference": "d7da22897125d34d7eddf7977758191c06a74497",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1 || ^8.0"
+            },
+            "require-dev": {
+                "friendsofphp/php-cs-fixer": "~2.17.1",
+                "phpstan/phpstan": "^0.12",
+                "phpunit/phpunit": "^7.5 || ^8.5 || ^9.0"
+            },
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+            "autoload": {
+                "files": [
+                    "lib/coroutine.php",
+                    "lib/Loop/functions.php",
+                    "lib/Promise/functions.php"
+                ],
+                "psr-4": {
+                    "Sabre\\Event\\": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Evert Pot",
+                    "email": "me@evertpot.com",
+                    "homepage": "http://evertpot.com/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "sabre/event is a library for lightweight event-based programming",
+            "homepage": "http://sabre.io/event/",
+            "keywords": [
+                "EventEmitter",
+                "async",
+                "coroutine",
+                "eventloop",
+                "events",
+                "hooks",
+                "plugin",
+                "promise",
+                "reactor",
+                "signal"
+            ],
+            "support": {
+                "forum": "https://groups.google.com/group/sabredav-discuss",
+                "issues": "https://github.com/sabre-io/event/issues",
+                "source": "https://github.com/fruux/sabre-event"
+            },
+            "time": "2021-11-04T06:51:17+00:00"
+        },
         {
             "name": "sebastian/code-unit-reverse-lookup",
             "version": "1.0.2",
@@ -11497,6 +11943,68 @@
                 }
             ],
             "time": "2021-07-28T10:34:58+00:00"
+        },
+        {
+            "name": "tysonandre/var_representation_polyfill",
+            "version": "0.1.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/TysonAndre/var_representation_polyfill.git",
+                "reference": "e9116c2c352bb0835ca428b442dde7767c11ad32"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/TysonAndre/var_representation_polyfill/zipball/e9116c2c352bb0835ca428b442dde7767c11ad32",
+                "reference": "e9116c2c352bb0835ca428b442dde7767c11ad32",
+                "shasum": ""
+            },
+            "require": {
+                "ext-tokenizer": "*",
+                "php": "^7.2.0|^8.0.0"
+            },
+            "provide": {
+                "ext-var_representation": "*"
+            },
+            "require-dev": {
+                "phan/phan": "^5.4.1",
+                "phpunit/phpunit": "^8.5.0"
+            },
+            "suggest": {
+                "ext-var_representation": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "0.1.3-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/var_representation.php"
+                ],
+                "psr-4": {
+                    "VarRepresentation\\": "src/VarRepresentation"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Tyson Andre"
+                }
+            ],
+            "description": "Polyfill for var_representation: convert a variable to a string in a way that fixes the shortcomings of var_export",
+            "keywords": [
+                "var_export",
+                "var_representation"
+            ],
+            "support": {
+                "issues": "https://github.com/TysonAndre/var_representation_polyfill/issues",
+                "source": "https://github.com/TysonAndre/var_representation_polyfill/tree/0.1.3"
+            },
+            "time": "2022-08-31T12:59:22+00:00"
         }
     ],
     "aliases": [],