<?php if (count($_POST) > 0) { $prepped = create_function('$a', 'return trim($_POST[$a]);'); } elseif (count($_GET) > 0) { $prepped = create_function('$a', 'return strtoupper($_GET[$a]);'); } else { $prepped = create_function('$a', 'return false;'); } echo $prepped('file'); ?>