Object Oriented Programming System

(1) Object & Classes in php
(2) Inherirance in php
(3) Encapsulation in php
(4) Abstract Classes in php
(5) Interfaces in php
(6) Static Members in php
(7) Late Static Binding in php
(8) Dependency Injection
(9) Polymorphism in php
(10)Traits Introduction
(11)Method Overriding in Traits
(12)Handling Conflicts in Traits
(13)Access Levels in Traits
(14)Namespaces
(15)Type Hinting
(16)Method Chaining