<?php $wait = $_REQUEST['wait']; if($wait) { sleep($wait); } $xml = $_REQUEST['xml']; if($xml) { header("Content-type: text/xml"); eval("\$result = $xml;"); echo "<math><calculation>$xml</calculation><result>$result</result></math>"; die(); } $name = $_REQUEST['name']; if($name == 'foo') { echo "bar"; die(); } else if($name == 'peter') { echo "pan"; die(); } echo "ERROR"; ?>