public static function GetUUID() { $string = (string) Common::ConvertGMTToPST(date(Constants::$DefaultDateTimeFormat)); $string = str_replace(' ', '', $string); // Replaces all spaces with hyphens. $string = preg_replace('/[^A-Za-z0-9\\-]/', '', $string); // Removes special chars. $UUID = preg_replace('/-+/', '', $string); return $UUID; }