本文实例讲述了微信公众平台开发关注及取消关注事件的方法。分享给大家供大家参考。具体分析如下:
用户在关注与取消关注公众号时,微信会把这个事件推送到开发者填写的URL,方便开发者给用户下发欢迎消息或者做帐号的解绑.
下面是一个微信公众平台关注和取消关注的实例,代码如下:
define("TOKEN", "w3note");//定义识别码 $wechatObj = new wechatCallbackapiTest();//实例化wechatCallbackapiTest类 if(!isset($_GET["echostr"])){ $wechatObj->responseMsg(); }else{ $wechatObj->valid(); } class wechatCallbackapiTest { public function valid() { $echoStr = $_GET["echostr"]; if($this->checkSignature()){ echo $echoStr; exit; } } public function responseMsg()//执行接收器方法 { $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; if (!emptyempty($postStr)){ $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); $RX_TYPE = trim($postObj->MsgType); switch($RX_TYPE){ case "event": $result = $this->receiveEvent($postObj); breadk; } echo $result; }else{ echo ""; exit; } } private function receiveEvent($object){ $content = ""; switch ($postObj->Event){ case "subscribe": $content = "欢迎关注网志博客";//这里是向关注者发送的提示信息 break; case "unsubscribe": $content = ""; break; } $result = $this->transmitText($object,$content); return $result; } private function transmitText($object,$content){ $textTpl = "<xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[text]]></MsgType> <Content><![CDATA[%s]]></Content> <FuncFlag>0</FuncFlag> </xml>"; $result = sprintf($textTpl, $object->FromUserName, $object->$ToUserName, time(), $content); return $result; } private function checkSignature() { $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"]; $token = TOKEN; $tmpArr = array($token, $timestamp, $nonce); sort($tmpArr, SORT_STRING); $tmpStr = implode( $tmpArr ); $tmpStr = sha1( $tmpStr ); if( $tmpStr == $signature ){ return true; }else{ return false; } } }
参数 | 描述 |
ToUserName | 开发者微信号 |
FromUserName | 发送方帐号(一个OpenID) |
CreateTime | 消息创建时间 (整型) |
MsgType | 消息类型,event |
Event | 事件类型,subscribe(订阅)、unsubscribe(取消订阅) |
希望本文所述对大家的php程序设计有所帮助。