OOP PHP Class

PHP Class Inheritance and MYSQL Database structure - Stack Overflow

How can i use this extends class without requiring it at the top? - PHP - SitePoint Forums

Implementation of PHP Abstract Class & Interfaces, by Faysal Ahmed, Oceanize Lab Geeks

Intermediate PHP (4) Object-Oriented PHP (2). Object-oriented concepts Classes, attributes and operations Class attributes Per-class constants Class method. - ppt download

Oops In PHP

Object Oriented PHP - PART-2

You can dynamically create and extend interfaces in PHP

An Introduction to PHP Standard Recommendation (PSR)

Process Equipment Range Extends with Drums and Discharge Cones - European Pharmaceutical Manufacturer

What You Need to Know About the 2 Most Well-Known Php Frameworks, Cakephp and Laravel - Works Blog