假设企业需要回复用户的明文如下：
<xml>
<ToUserName><![CDATA[mycreate]]></ToUserName>
<FromUserName><![CDATA[wx5823bf96d3bd56c7]]></FromUserName>
<CreateTime>1348831860</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[this is a test]]></Content>
<MsgId>1234567890123456</MsgId>
<AgentID>128</AgentID>
</xml>
为了将此段明文回复给用户，企业应：
1.自己生成时间时间戳(timestamp),随机数字串(nonce)以便生成消息体签名，也可以直接用从公众平台的post url上解析出的对应值。
2.将明文加密得到密文。
3.用密文，步骤1生成的timestamp,nonce和企业在公众平台设定的token生成消息体签名。
4.将密文，消息体签名，时间戳，随机数字串拼接成xml格式的字符串，发送给企业号。
以上2，3，4步可以用公众平台提供的库函数EncryptMsg来实现。
*/
// 需要发送的明文
$sRespData = "<xml><ToUserName><![CDATA[mycreate]]></ToUserName><FromUserName><![CDATA[wx5823bf96d3bd56c7]]></FromUserName><CreateTime>1348831860</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[this is a test]]></Content><MsgId>1234567890123456</MsgId><AgentID>128</AgentID></xml>";
$sEncryptMsg = "";
//xml格式的密文
$errCode = $wxcpt->EncryptMsg($sRespData, $sReqTimeStamp, $sReqNonce, $sEncryptMsg);
if ($errCode == 0) {
// TODO:
// 加密成功，企业需要将加密之后的sEncryptMsg返回
// HttpUtils.SetResponce($sEncryptMsg); //回复加密之后的密文
} else {
print "ERR: " . $errCode . "\n\n";
// exit(-1);
}
/**
* 发送文本消息
*/
public static function sendMsg($paramArr)
{
$options = array('toUserName' => '', 'msgContent' => '', 'msgType' => 'text');
if (is_array($paramArr)) {
$options = array_merge($options, $paramArr);
}
extract($options);
$corpId = self::$corpId;
$token = self::$token;
$signature = self::$signature;
$timestamp = self::$timestamp;
$encodingAesKey = self::$encodingAesKey;
$nonce = self::$nonce;
$agentId = self::$agentId;
if (empty($corpId)) {
return false;
}
$wxcpt = new WXBizMsgCrypt($token, $encodingAesKey, $corpId);
$expend = "";
if ($msgContent) {
switch ($msgType) {
#文本
case "text":
$expend = "<Content><![CDATA[{$msgContent}]]></Content>";
break;
#图片
#图片
case "image":
$expend = "<Image><MediaId><![CDATA[{$msgContent}]]></MediaId></Image>";
break;
#声音
#声音
case "voice":
$expend = "<Voice><MediaId><![CDATA[{$msgContent}]]></MediaId></Voice>";
break;
#新闻
#新闻
case "news":
if (!is_array($msgContent)) {
break;
}
$expend = "<Articles>";
foreach ($msgContent as $value) {
!empty($value['title']) && ($expend .= "<item><Title><![CDATA[{$value['title']}]]></Title>");
!empty($value['title']) && ($expend .= "<Description><![CDATA[{$value['desc']}]]></Description>");
!empty($value['title']) && ($expend .= "<PicUrl><![CDATA[{$value['picUrl']}]]></PicUrl>");
!empty($value['title']) && ($expend .= "<Url><![CDATA[{$value['url']}]]></Url></item>");
}
$expend .= "</Articles>";
break;
}
}
$sRespData = "<xml><ToUserName><![CDATA[mycreate]]></ToUserName><FromUserName><![CDATA[{$corpId}]]></FromUserName><CreateTime>" . SYSTEM_TIME . "</CreateTime><MsgType><![CDATA[text]]></MsgType>{$expend}</xml>";
$sEncryptMsg = "";
//xml格式的密文
$errCode = $wxcpt->EncryptMsg($sRespData, $timestamp, $nonce, $sEncryptMsg);
return $sEncryptMsg;
}
/**
* 企业号信息加密处理
*/
protected function encrypt($msg)
{
$sEncryptMsg = "";
//xml格式的密文
$timestamp = time();
$nonce = uniqid();
$app = \TMS_APP::model('mp\\mpaccount')->byId($this->call['mpid']);
$wxcpt = new WXBizMsgCrypt($app->token, $app->qy_encodingaeskey, $app->qy_corpid);
$errCode = $wxcpt->EncryptMsg($msg, $timestamp, $nonce, $sEncryptMsg);
if ($errCode != 0) {
TMS_APP::model('log')->log($this->call['mpid'], $this->content, $errCode);
exit;
}
return $sEncryptMsg;
}