看到微信api里面也有介绍到事件推送，那么这个关注事件是如何使用的呢？ 今天不废话，直接上代码：
responseMsg();class wechatCallbackapiTest { 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); switch($RX_TYPE) { case "text" : $resultStr = $this->receiveText($postObj); break; case "event" : $resultStr = $this->receiveEvent($postObj); break; default : $resultStr = "unknow msg type: " . $RX_TYPE; break; } echo $resultStr; } else { echo ""; exit(); } } private function receiveText($object) { if (!empty($object)){ $fromUsername = $object->FromUserName; $toUsername = $object->ToUserName; $keyword = trim($object->Content); $time = time(); //自动回复图文消息 $textTpl = " %s 1 "; if(!empty( $keyword )){ $msgType = "news"; //类型 news:图文消息、text:文本消息 event:事件 $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr); echo $resultStr; }else{ echo "Input something..."; } }else { echo ""; exit; } } private function receiveEvent($object) { $contentStr = ""; switch($object->Event) { case "subscribe" : $contentStr = "欢迎关注社区管家！我们可以常联系了！！"; break; } $resultStr = $this->transmitText($object, $contentStr); return $resultStr; } private function transmitText($object, $content, $flag = 0) { $textTpl = " %s %d "; $resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content, $flag); return $resultStr; }}?>以上就是微信开发系列教程（2）的详细内容，更多请关注php中文网其它相关文章！
