Kontrael

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Content-type: text/html; charset=utf-8");
header("Pragma: no-cache");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
define("NO_KEEP_STATISTIC", true);
define("NOT_CHECK_PERMISSIONS", true);

if (!$_SERVER["DOCUMENT_ROOT"]) {
    $_SERVER["DOCUMENT_ROOT"] = '/home/bitrix/www'; //тут укажите свой путь
}
require($_SERVER["DOCUMENT_ROOT"] . "/bitrix/modules/main/include/prolog_before.php");