PhpPeg\PHPWriter::function_name PHP Method

    function function_name($str)
    {
        $str = preg_replace('/-/', '_', $str);
        $str = preg_replace('/\\$/', 'DLR', $str);
        $str = preg_replace('/\\*/', 'STR', $str);
        $str = preg_replace('/[^\\w]+/', '', $str);
        return $str;
    }