Inheritance in php with example

Inheritance will derive all property and method of the parent class  to the child class, with the ability to override the behavior

How to inherit a class

the child class can inherit from parent class using extends keywords. we will create File class as a parent and FileList as a child class.

<?php

	class File
	{

		protected $name;
		protected $type;

		public function __construct($name,$type){
			$this->name =$name;
			$this->type =$type;
		}

		public function GeneratePath(){
			return $this->name.'.'.$this->type;
		}

	}

	class FileList extends File{ 

	}

	$FileList = new FileList('index','php');

How to Function Overriding

In a child's class, we can override the inherited method by redefining it. here we will rewrite the GeneratePath method 

<?php

	class File
	{

		protected $name;
		protected $type;

		public function __construct($name,$type){
			$this->name =$name;
			$this->type =$type;
		}

		public function GeneratePath(){
			return $this->name.'.'.$this->type;
		}

	}

	class FileList extends File{
		public function GeneratePath(){
			return 'qandeelacademy.com/'.$this->name.'.'.$this->type;
		}
	}

	$FileList = new FileList('index','php');
	echo $FileList->GeneratePath();