From 9f4bcb665871ce3d9e183ba7ac58d616c145745d Mon Sep 17 00:00:00 2001 From: Darmen Amanbayev Date: Sat, 22 Sep 2018 22:12:36 +0600 Subject: [PATCH] Update readme.md Added summary notes and improved formatting. --- readme.md | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/readme.md b/readme.md index 58f1c7c..f8f787e 100644 --- a/readme.md +++ b/readme.md @@ -1,18 +1,23 @@ ## SOLID Principles Examples in PHP -### Single Responsibility Principle -A class should have one, and only one, reason to change. [Example](./1-single-responsibility-principle.php) +### Single Responsibility Principle ([Example](./1-single-responsibility-principle.php)) +This principle is about **actors and high level architecture**. +> A class should have one, and only one, reason to change. -### Open Closed Principle -A class should be open for extension, but closed for modification. [Example](./2-open-closed-principle.php) +### Open Closed Principle ([Example](./2-open-closed-principle.php)) +This principle is about **class design and feature extensions**. +> A class should be open for extension, but closed for modification. -### Liskov Substitution Principle -Derived classes must be substitutable for their base classes. [Example](./3-liskov-substitution-principle.php) +### Liskov Substitution Principle ([Example](./3-liskov-substitution-principle.php)) +This principle is about **subtyping and inheritance** +> Derived classes must be substitutable for their base classes. -### Interface Segregation Principle -Many client-specific interfaces are better than one general-purpose interface. [Example](./4-interface-segregation-principle.php) +### Interface Segregation Principle ([Example](./4-interface-segregation-principle.php)) +This principle is about **business logic to clients communication**. +> Many client-specific interfaces are better than one general-purpose interface. -### Dependency Inversion Principle -Depend upon abstractions. Do not depend upon concretions. [Example](./5-dependency-inversion-principle.php) +### Dependency Inversion Principle ([Example](./5-dependency-inversion-principle.php)) +> This principle wires up all **other four principles in a single circle**. +Depend upon abstractions. Do not depend upon concretions. #### For more information about *Object Oriented Design Principles*, you can refer [this slide](https://viblo.asia/thangtd90/posts/pVYRPJPmG4ng)