$url = rtrim($url, "/") . "/api/license/info?key=" . urlencode($licenseKey) . "&dir=" . urlencode($dir);
$res = @file_get_contents($url);
if(!$res || !($res = json_decode($res)) || empty($res->data->cacheKey)) return Array(false, "");
return sd_licenseCheck($licenseKey, $res->data->cacheKey, true);