A solid understanding of OOP starts with four primary principles, often referred to as (Abstraction, Polymorphism, Inheritance, Encapsulation).
Before you can start to understand classic PHP OOP software design patterns, you must first understand four key principles of OOP: Features of Object Oriented Programming - Naukri Code 360
: This principle allows different classes to be treated as instances of the same parent class or interface, enabling you to swap out implementations without changing the calling code. Beyond the Basics: Advanced PHP OOP
Before you can start to understand classic PHP OOP software design patterns, you must first understand four key principles of OOP:
: This allows a class (child) to inherit the traits and behaviors of another class (parent). It’s a powerful way to share code and create hierarchical relationships between concepts in your application.


