function convertExportDataArray($text_array)
{
    if (!is_array($text_array)) {
        return convertExportData($text_array);
    }
    foreach ($text_array as $k => $v) {
        if (is_array($v)) {
            $text_array[$k] = convertExportDataArray($v);
        } else {
            $text_array[$k] = convertExportData($v);
        }
    }
    return $text_array;
}
 function writeString($string)
 {
     if ($this->buffering === true) {
         $this->buffer .= $string . $this->_nl;
     } else {
         fwrite($this->out_file, convertExportData($string) . $this->_nl);
     }
 }