Web Infotech India Web Developer Interview Questions and Answers

OOP stands for Object-Oriented Programming. It is a programming paradigm that uses objects to represent and manipulate data.

• OOP focuses on creating reusable code by organizing data and behavior into objects

• Objects have properties (data) and methods (behavior) that can be accessed and modified

• Encapsulation, inheritance, and polymorphism are key concepts in OOP

• Examples of OOP languages include Java, Python, and C++

Data abstraction in PHP is the process of hiding implementation details and showing only necessary information to the user.

• Abstraction is achieved through abstract classes and interfaces

• It helps in reducing complexity and improving maintainability

• Example: A database class that only exposes methods for CRUD operations

Inheritance is a mechanism in object-oriented programming where a class is based on another class.

• Inheritance allows a class to inherit properties and methods from another class.

• The class that is being inherited from is called the parent or superclass.

• The class that inherits from the parent is called the child or subclass.

• The child class can add its own properties and methods, or override those of the parent class.

• Inhe...read more