convertEncode method

    /**
     * convertEncode
     *
     * Converts encoding to UTF-8
     *
     * @param   $string
     * @param   $encoding
     * @access  private
     */
    private function convertEncode($string, $encoding)
    {
        # What type of encoding?
        switch($encoding)
        {
            case "iso-8859-1":
                $string = utf8_encode($string);
                break;
            case "us-ascii":
                $string = iconv($encoding, 'UTF-8', $string);
                break;
            case "windows-1252":
                $string = iconv($encoding, 'UTF-8', $string);
                break;
        }

        return $string;
    }