How to use PHP to implement the message push function of public accounts

How to use PHP to implement the message push function of public accounts

With the popularity of mobile Internet, public accounts have become an important channel for many companies and individuals to spread information. In public accounts, the message push function is an indispensable part. This article will introduce how to use PHP to implement the message push function of public accounts and provide specific code examples.

1. Preparation

Before we start to implement the message push function, we need to prepare the following two things:

• A public account: you You need to have a certified public account and obtain the corresponding AppID and AppSecret. If you don’t have a public account yet, you can go to the public platform to apply for one.
• PHP development environment: You need to install and configure the PHP development environment to ensure that the PHP code can run normally.

2. Get Access Token

Before using the message push function of the official account, we need to obtain the Access Token first. Access Token is a certificate for calling the WeChat public platform interface. It has a certain validity period, usually 2 hours. Access Token can be obtained through the following code:

$apiUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=YOUR_APPID&secret=YOUR_APPSECRET";
$response = file_get_contents($apiUrl);
$data = json_decode($response, true);

$accessToken = $data['access_token'];

Replace "YOUR_APPID" and "YOUR_APPSECRET" in the above code with the AppID and AppSecret of your own official account. After executing the above code, save the obtained $accessToken for subsequent use.

3. Send a message

After obtaining the Access Token, we can use PHP to send messages to the specified user. Here is a code example for sending a text message:

$apiUrl = "https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=" . $accessToken;
$data = array(
    'touser' => 'OPENID_OF_USER',
    'msgtype' => 'text',
    'text' => array(
        'content' => 'Hello, world!'
    )
);

$options = array(
    'http' => array(
        'header' => "Content-Type: application/json
",
        'method' => 'POST',
        'content' => json_encode($data)
    )
);

$context = stream_context_create($options);
$result = file_get_contents($apiUrl, false, $context);

In the above code, replace "OPENID_OF_USER" with the OpenID of the user you want to send the message to. After executing the above code, a "Hello, world!" text message will be sent to the specified user.

In addition to sending text messages, you can also send pictures, audio, video and other types of messages. For specific message types and field descriptions, please refer to the development documentation of the WeChat public platform.

4. Asynchronously sending messages

In actual development, the process of sending messages may be time-consuming. In order not to block other business processing, we can send messages The code is executed in an asynchronous task. The following is a code example that uses PHP's multi-process to send messages asynchronously:

$pid = pcntl_fork();

if ($pid == -1) {
    // fork失败
    die('Could not fork');
} else if ($pid) {
    // 父进程
    return;
} else {
    // 子进程
    // 发送消息的代码
    // ...
    exit();
}

Place the code for sending messages in the "child process", so that you can continue to handle other business in the parent process .

Summary

Using PHP to implement the message push function of public accounts can help us better communicate and interact with users. Through the method introduced in this article, you can easily implement the message push function of the official account through PHP code and expand it according to actual needs. Hope this article can be helpful to you!

The above is the detailed content of How to use PHP to implement the message push function of public accounts. For more information, please follow other related articles on the PHP Chinese website!