How to implement WeChat public account menu events in PHP

For developers who use PHP to develop WeChat official accounts, implementing WeChat official account menu events is a basic requirement. Simply put, the menu event means that when the user clicks the menu of the WeChat official account, the WeChat server will send a request to the developer's backend, and the developer needs to process the request in the backend and return the corresponding result. This article will introduce how to implement WeChat official account menu events in PHP.

1. Configuring the public account menu

First, configure your own menu in the background of the WeChat public platform. After the configuration is completed, you need to obtain the menu configuration information in the backend of the public platform. The specific operation process is as follows:

1) In the public platform menu management page, select the custom menu and click "Add Menu".

2) Set the buttons according to your own needs, including menu type, name, URL, etc.

3) After completing the configuration, click the "Save and Publish" button.

4) After successful release, the public platform will generate the corresponding menu ID.

2. Processing WeChat server requests

Next, we need to process the menu click event in the PHP background. First, you need to create a PHP file to accept menu event requests. The specific operations are as follows:

1) Create a menu click event processing file, such as menu.php.

2) Obtain the POST data from the public platform and process the menu event request.

3) Execute different code logic according to different menu types, such as jumping to a specified page or returning a keyword reply.

4) After the processing is completed, the processing results are returned to the WeChat server.

The following is a sample code:

// 验证消息的确来自微信服务器
$echoStr = $_GET["echostr"];
if($echoStr) {
    echo $echoStr;
    exit;
}

// 获取POST数据
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

// 解析POST数据
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);

// 处理菜单事件
if($postObj->Event == 'CLICK') {
    $key = $postObj->EventKey;
    // 根据菜单key值执行不同的代码逻辑
    switch($key) {
        case 'MENU1':
            // 跳转到指定页面
            $url = 'http://www.example.com/menu1.php';
            $response = "<xml><ToUserName><![CDATA[".$postObj->FromUserName."]]></ToUserName><FromUserName><![CDATA[".$postObj->ToUserName."]]></FromUserName><CreateTime>".time()."</CreateTime><MsgType><![CDATA[news]]></MsgType><ArticleCount>1</ArticleCount><Articles><item><Title><![CDATA[Menu 1]]></Title><Description><![CDATA[Click me to see menu 1!]]></Description><PicUrl><![CDATA[http://www.example.com/menu1.jpg]]></PicUrl><Url><![CDATA[".$url."]]></Url></item></Articles></xml>";
            break;
        case 'MENU2':
            // 返回关键词回复
            $response = "<xml><ToUserName><![CDATA[".$postObj->FromUserName."]]></ToUserName><FromUserName><![CDATA[".$postObj->ToUserName."]]></FromUserName><CreateTime>".time()."</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[You clicked menu 2!]]></Content></xml>";
            break;
        default:
            $response = '';
            break;
    }
}

// 返回处理结果
echo $response;

?>

3. Configuring the public account server address

Finally, we need to configure the URL address of the previously created menu click event processing file to the WeChat public platform background. The specific operations are as follows:

1) In the basic configuration page of the public platform, find "Server Configuration" and click "Modify Configuration".

2) Fill in the URL of the previously created menu click event processing file into the "Server Address".

3) Token fill in the Token you set and save it.

4) The public platform will send a verification request to the filled-in URL. If the verification is passed, it means that the menu event has been successfully configured.

Summary

Through the above steps, we can implement WeChat official account menu events in PHP. When the user clicks on the menu, the WeChat server will send a request to our server, and we will return the corresponding result after processing the request in the server. In this way, we can implement various types of menu operations, making the WeChat official account more powerful and interesting.

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