public static function removeComments($output)
    {
        $lines  = explode("\n", $output);
        $output = "";
        // try to keep mem. use down
        $linecount  = count($lines);
        $in_comment = false;
        for ($i=0; $i<$linecount; $i++) {
            if (preg_match("/^\/\*/", $lines[$i])) {
                $in_comment = true;
            }
            if (!$in_comment) {
                $output .= $lines[$i] . "\n";
            }
            if (preg_match("/\*\/$/", $lines[$i])) {
                $in_comment = false;
            }
        }
        unset($lines);
        return $output;
    }