How to use PHP to implement the task query function of WeChat applet?

How to use PHP to implement the task query function of WeChat applet?

With the popularity and application scope of WeChat mini programs, many companies and individuals have begun to develop their own business functions on mini programs. Among them, the task query function is very common in many scenarios, such as internal task management of enterprises, student homework management of educational institutions, etc. This article will introduce in detail how to use PHP to implement the task query function of WeChat applet and provide code examples.

1. Preliminary preparations

1. Register a WeChat mini program developer account and create your own mini program.
2. Get the AppID and AppSecret of the mini program in the mini program management background, and record them for later use.
3. Understand the basic development specifications and API documentation of WeChat mini programs.

2. Obtain access_token
To call the API interface of the WeChat applet, you first need to obtain a valid access_token. The access_token is obtained by requesting the WeChat interface and requesting AppID and AppSecret as parameters.

The specific acquisition process is as follows:

$appId = "你的AppID";
$appSecret = "你的AppSecret";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appId."&secret=".$appSecret;
$response = file_get_contents($url);
$result = json_decode($response, true);
$access_token = $result['access_token'];

3. Obtain the task list
Use PHP to send a request and call the WeChat applet interface to obtain the task list information.

The specific acquisition process is as follows:

$url = "https://api.weixin.qq.com/wxa/business/getliveinfo?access_token=".$access_token;
$postData = array(
    "action" => "get_task_list",
    "begin_time" => "开始时间",
    "end_time" => "结束时间",
);
$options = array(
    'http' => array(
        'header'  => "Content-type: application/x-www-form-urlencoded
",
        'method'  => 'POST',
        'content' => http_build_query($postData),
    ),
);
$context  = stream_context_create($options);
$response = file_get_contents($url, false, $context);
$result = json_decode($response, true);
$tasks = $result['task_list'];

The "start time" and "end time" in the above code are time parameters passed according to actual needs.

4. Display the task list
Display the obtained task list information on the front end of the mini program, and you can use HTML and CSS to render the page.

The specific display process is as follows:

foreach($tasks as $task){
    $taskId = $task['task_id'];
    $taskTitle = $task['task_title'];
    // 在这里可以根据需要进行其他任务的相关信息的展示
    echo "<div>".$taskTitle."</div>";
}

The display of other related information can be added to the loop according to actual needs.

5. Summary
Through the above steps, we successfully implemented the task query function of the WeChat applet using PHP. First obtain the access_token, then send a request to obtain the task list information, and display it on the mini program page. This example is just a basic example, and there may be more functions and complex logic in actual applications. I hope this article can be helpful to beginners and provide you with some reference and guidance in the development of WeChat mini programs.

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