Amazon_S3_And_CloudFront::get_folder_time_from_url PHP Method

    function get_folder_time_from_url($url)
    {
        preg_match('@[0-9]{4}/[0-9]{2}@', $url, $matches);
        if (isset($matches[0])) {
            return $matches[0];
        }
        return null;
    }