Input
Output
<?php // Abstract class abstract class Shape { abstract public function draw(); } // Rectangle class extends Shape class Rectangle extends Shape { public function draw() { echo "Drawing of the rectangle\n"; } } // Circle class extends Shape class Circle extends Shape { public function draw() { echo "Drawing of the circle\n"; } } // Main execution $s = new Circle(); $s1 = new Rectangle(); $s->draw(); $s1->draw(); ?>