Introduction

A concept of accessing the features of one class from another class called Inheritance. The child class will inherit all the public and protected properties and methods from the parent class. An inherited class is defined by using the extends keyword.

Example - inheritance

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PHP - Overriding Inherited Methods

Inherited methods can be overridden by redefining the methods in the child class.

Here the __construct() and intro() methods in the child class (Strawberry) will override the __construct() and intro() methods in the parent class (Fruit):

Example - overriding inherited methods

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PHP - The final Keyword

used To prevent class inheritance or to prevent method overriding is the usage of final keyword.

How to prevent class inheritance shows as follows:

Example - final keyword

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