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PHP OOPs Interview Questions and Answers

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Ques 1. What is Object-Oriented Programming (OOP)?

OOP is a programming paradigm that uses objects, which are instances of classes, to organize and structure code.

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Ques 2. Explain the four pillars of OOP.

The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.

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Ques 3. What is encapsulation?

Encapsulation is the bundling of data and methods that operate on the data into a single unit, i.e., a class.

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Ques 4. How does inheritance work in PHP?

Inheritance allows a class to inherit properties and methods from another class. It promotes code reusability.

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Ques 5. What is polymorphism?

Polymorphism allows objects of different classes to be treated as objects of a common base class. It includes method overloading and overriding.

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