<?php header("Cache: no-cache, no-store"); $refer = $_SERVER['HTTP_REFERER']; if ($refer && $refer != "") print("log('External script (HTTP Referer): FAIL');\n"); else print("log('External script (HTTP Referer): PASS');\n"); ?> if (document.referrer.toString() != "") log('External script (JavaScript): FAIL'); else log('External script (JavaScript): PASS');