Online PHP editor | output for od6Lb

<?php /** * Abstract Surfer Class * * @package hangten */ abstract class Surfer { abstract public function rideWave($amplitude); public function applyWax($waxType){ $this->printMessage("Ahh, all waxed up with '".$waxType."', ready to go!"); } public function paddleOut(){ $this->printMessage("Paddling Out...."); } public function screamShark(){ $this->printMessage("SHARK!!"); } public function printMessage($msg = ""){ $lt = (isset($_SERVER['HTTP_USER_AGENT']))?"<br />":"\r\n"; print($msg.$lt); } } /** * RookieSurfer Class * * This surfer is green and can barely surf =) * @package hangten */ class RookieSurfer extends Surfer { public function rideWave($amplitude = 1){ $this->printMessage("Trying.. Trying.. to ride a ".$amplitude."ft. wave, whew!"); } } /** * ProSurfer Class * * This surfer is crazy skilled!! * @package hangten */ class ProSurfer extends Surfer { public function rideWave($amplitude = 8){ $this->printMessage("Riding a ".$amplitude."ft. wave backwards doing a backflip!"); } public function killSharkWithBoard(){ $this->printMessage("Totally just sliced that shark in two, he's over it!! booya!"); } } if(strnatcmp(phpversion(),'5.3.0') >= 0){ echo("Error : must have PHP version 5.3+ to run this script."); exit(); } // Rookie Instantiation $rookie = new RookieSurfer; $rookie->applyWax("Candle Wax"); $rookie->paddleOut(); $rookie->rideWave(2); $rookie->screamShark(); // Pro Instantiation $pro = new ProSurfer; $pro->applyWax("Sex Wax"); $pro->paddleOut(); $pro->rideWave(50); $pro->killSharkWithBoard();