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xmlparse.php
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<?php
include_once "errorCode.php";
/**
* XMLParse class
*
* 提供提取消息格式中的密文及生成回复消息格式的接口.
*/
class XMLParse
{
/**
* 提取出xml数据包中的加密消息
* @param string $xmltext 待提取的xml字符串
* @return string 提取出的加密消息字符串
*/
public function extract($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 = $array_a->item(0)->nodeValue;
return array(0, $encrypt, $tousername);
} catch (Exception $e) {
//print $e . "\n";
return array(ErrorCode::$ParseXmlError, null, null);
}
}
/**
* 生成xml消息
* @param string $encrypt 加密后的消息密文
* @param string $signature 安全签名
* @param string $timestamp 时间戳
* @param string $nonce 随机字符串
*/
public function generate($encrypt, $signature, $timestamp, $nonce)
{
$format = "<xml>
<Encrypt><![CDATA[%s]]></Encrypt>
<MsgSignature><![CDATA[%s]]></MsgSignature>
<TimeStamp>%s</TimeStamp>
<Nonce><![CDATA[%s]]></Nonce>
</xml>";
return sprintf($format, $encrypt, $signature, $timestamp, $nonce);
}
}
?>