1. For Wechat scanning, you need to follow the public account first, and then automatically jump to the specified url (opened in Wechat browser). )

 private function receiverEvent($object){
    $content = "";
    switch($object->Event){
        case "subscribe":
            $content = ""."\n";
            $content .=  ""."\n";
            $content .= "<a href="wwww.baidu.com">".""."</a>"."\n";
            //
            break;
        case "unsubscribe":
            $content = "";
            break;
    }//switch
    $result = $this->transmitText($object,$content);
    return $result;
}