<?php require_once getenv("DOCUMENT_ROOT") . "/lib/config.php"; require_once "Shape.php"; require_once "Arc.php"; require_once "Rectangle.php"; $arc = new Arc(10); echo $arc->calcS() . "<br/>"; echo $arc->calcP() . "<br/>"; $rect = new Rectangle(8, 6); echo $rect->calcS() . "<br/>"; echo $rect->calcP() . "<br/>";