Show Output
<?php // Include class definition require "Rectangle.php"; // Define a new class based on an existing class class Square extends Rectangle { // Method to test if the rectangle is also a square public function isSquare(){ if ($this->length == $this->width){ return true; // Square } else{ return false; // Not a square } } } // Create a new object from Square class $obj = new Square; // Set object properties values $obj->length = 20; $obj->width = 20; // Call the object methods if($obj->isSquare()){ echo "The area of the square is "; } else{ echo "The area of the rectangle is "; }; echo $obj->getArea(); ?>
