PHP inheritence

animal.php

<?php
//Encapsulation with Inheritance
class Animal
{
    private $family;
    private $food;
    public function __construct($family, $food)
    {
        $this->family = $family;
        $this->food   = $food;
    }
    public function get_family()
    {
        return $this->family;
    }
    public function set_family($family)
    {
        $this->family = $family;
    }
    public function get_food()
    {
        return $this->food;
    }
    public function set_food($food)
    {
        $this->food = $food;
    }
}

class Cow extends animal{

    public function __construct($food, $family){
        parent::__construct($food, $family);
    }	
}
	
$cow = new Cow('grass','hibread');

echo $cow->get_food(); //Result will be grass
?>