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Explain Object-Oriented Programming in PHP.

Updated May 24, 2026

Short answer

OOP organizes code into classes and objects using encapsulation, inheritance, abstraction, and polymorphism.

Deep explanation

PHP OOP improves scalability and maintainability. Classes define structure, while objects are instances. Encapsulation hides implementation details, inheritance enables reuse, abstraction simplifies interfaces, and polymorphism allows flexible behavior.

Real-world example

Laravel models and controllers are built using OOP principles.

Common mistakes

  • Creating god classes with too many responsibilities.

Follow-up questions

  • What is encapsulation?
  • What is polymorphism?

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