原文:PHP-微信公众平台开发-接收用户输入消息类型并响应
<?php
// 该代码块用于接收用户消息，根据用户输入的消息类型进行判断，文本，图片，视频，位置，链接，语音等，并取得值，处理后给予响应。
// 接收用户消息
// 微信公众账号接收到用户的消息类型判断
//
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
if (!isset($_GET['echostr'])) {
$wechatObj->responseMsg();
}else{
$wechatObj->valid();
}
class wechatCallbackapiTest
{
public function valid()
{
$echoStr = $_GET["echostr"];
if($this->checkSignature()){
echo $echoStr;
exit;
}
}
private function checkSignature()
{
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$token = TOKEN;
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
if( $tmpStr == $signature ){
return true;
}else{
return false;
}
}
public function responseMsg()
{
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
if (!empty($postStr)){
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$RX_TYPE = trim($postObj->MsgType);
//用户发送的消息类型判断
switch ($RX_TYPE)
{
case "text": //文本消息
$result = $this->receiveText($postObj);
break;
case "image": //图片消息
$result = $this->receiveImage($postObj);
break;
case "voice": //语音消息
$result = $this->receiveVoice($postObj);
break;
case "video": //视频消息
$result = $this->receiveVideo($postObj);
break;
case "location"://位置消息
$result = $this->receiveLocation($postObj);
break;
case "link": //链接消息
$result = $this->receiveLink($postObj);
break;
default:
$result = "unknow msg type: ".$RX_TYPE;
break;
}
echo $result;
}else {
echo "";
exit;
}
}
/*
* 接收文本消息
*/
private function receiveText($object)
{
$content = "你发送的是文本，内容为：".$object->Content;
$result = $this->transmitText($object, $content);
return $result;
}
/*
* 接收图片消息
*/
private function receiveImage($object)
{
$content = "你发送的是图片，地址为：".$object->PicUrl;
$result = $this->transmitText($object, $content);
return $result;
}
/*
* 接收语音消息
*/
private function receiveVoice($object)
{
$content = "你发送的是语音，媒体ID为：".$object->MediaId;
$result = $this->transmitText($object, $content);
return $result;
}
/*
* 接收视频消息
*/
private function receiveVideo($object)
{
$content = "你发送的是视频，媒体ID为：".$object->MediaId;
$result = $this->transmitText($object, $content);
return $result;
}
/*
* 接收位置消息
*/
private function receiveLocation($object)
{
$content = "你发送的是位置，纬度为：".$object->Location_X."；经度为：".$object->Location_Y."；缩放级别为：".$object->Scale."；位置为：".$object->Label;
$result = $this->transmitText($object, $content);
return $result;
}
/*
* 接收链接消息
*/
private function receiveLink($object)
{
$content = "你发送的是链接，标题为：".$object->Title."；内容为：".$object->Description."；链接地址为：".$object->Url;
$result = $this->transmitText($object, $content);
return $result;
}
/*
* 回复文本消息
*/
private function transmitText($object, $content)
{
$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";
$result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);
return $result;
}
}
?>