public function extract($xmltext)
{
try {
$xml = new \DOMDocument();
$xml->loadXML($xmltext);
$array_e = $xml->getElementsByTagName('Encrypt');
$array_a = $xml->getElementsByTagName('ToUserName');
$encrypt = $array_e->item(0)->nodeValue;
$tousername = '';
if ($array_a->length > 0) {
$tousername = $array_a->item(0)->nodeValue;
}
return array(0, $encrypt, $tousername);
} catch (\Exception $e) {
//print $e . "\n";
return array(ErrorCode::$ParseXmlError, null, null);
}
}