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