Freshers / Beginner level questions
Freshers / Beginner level questions & answers
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.
Ques 2. Explain the four pillars of OOP.
The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.
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.
Ques 4. How does inheritance work in PHP?
Inheritance allows a class to inherit properties and methods from another class. It promotes code reusability.
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.
Ques 6. Explain the concept of abstraction.
Abstraction involves hiding the complex implementation details and showing only the necessary features of an object.
Ques 7. What is a class in PHP?
A class is a blueprint for creating objects. It defines properties (attributes) and methods that the objects will have.
Ques 8. How do you instantiate an object in PHP?
You can instantiate an object using the 'new' keyword followed by the class name. For example: $object = new MyClass();
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