We use cookies to improve your experience on our site and to show you personalised advertising. Please read our cookie policy and privacy policy.
<?php
/* Parent class */
class square{
public $height = 0;
function __construct($h) {
$this->height = $h;
}
function area() {
return ($this->height * $this->height);
}
}
/* Child class */
class rectangle extends square {
public $width = 0;
function __construct($h, $w) {
$this->height = $h;
$this->width = $w;
}
/* Declare method with same name in child class */
function area() {
return ($this->height * $this->width);
}
}
$sq = new square(6);
echo "Area of a Square: ".$sq->area();
$rec = new rectangle(8,4);
echo "<br />Area of a Rectangle: ".$rec->area();
?>
/* Output */
Area of a Square: 36
Area of a Rectangle: 32