Object Oriented Concepts in PHP

1. Class(  Parent Class  Child Class) ->Describe on ClassObjectVariable.php file
2. Object ->Describe on ClassObjectVariable.php file
3. Variable ->Describe on ClassObjectVariable.php file
4. Function/Method(  Member Function  Construct Method  Destruct Method  Static Method  Abstract Method  Public Method  Private Method  Protected Method)
5. Inheritance(  Single level Inheritance  Multi-level Inheritance) ->Describe on Inheritance.php file
6. Interface ->Describe on Interface.php file
7. Access Modifier (  Public  Private  Protected  Default ) ->Describe on accessModifier.php file
8. Polymorphism ->Describe on Polymorphism.php file
9. Encapsulation ->Describe on Encapsulation.php file
10. Overwriting ->Describe on Polymorphism.php file
11. Keywords ->Describe on Keyword.php file  final