protected function convertTxtToXml($txt)
{
$xml = '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
$xml .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">';
foreach (explode("\n", $txt) as $url) {
$xml .= '<url><loc>' . $url . '</loc></url>';
}
$xml .= '</urlset>';
return $xml;
}