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

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

With the rapid development of WeChat mini programs, more and more developers are beginning to pay attention to how to use PHP to implement some customized functions of WeChat mini programs. Among them, the task progress function is a very common and practical function, so this article will focus on how to use PHP to implement the task progress function of the WeChat applet and provide specific code examples.

1. Preparation work
   Before you start writing code, you first need to ensure that the following environment and conditions are in place:
2. A server with a PHP environment installed;
3. Have opened a developer account for the WeChat applet, and have obtained the AppID and AppSecret of the applet;
4. Master the basic knowledge of using PHP for related development.
5. Get user OpenID
   The task progress function of the applet usually requires data storage and query based on the user's OpenID. Therefore, we need to get the user's OpenID first. In the WeChat applet, you can log in and obtain the user's OpenID by calling the applet login interface. The sample code is as follows:

<?php
session_start();

// 小程序登录接口
$url = "https://api.weixin.qq.com/sns/jscode2session?appid=YOUR_APPID&secret=YOUR_APPSECRET&js_code=JSCODE&grant_type=authorization_code";
$js_code = $_GET['code']; // 从小程序的登录接口获取到code
$url = str_replace("JSCODE", $js_code, $url);

// 发送请求获取用户OpenID
$result = file_get_contents($url);
$data = json_decode($result, true);
$openid = $data['openid'];

$_SESSION['openid'] = $openid;

echo $openid; // 返回OpenID给小程序
?>

Please replace YOUR_APPID and YOUR_APPSECRET in the above code with your own The AppID and AppSecret of the applet.

3. Database design
   The task progress function involves storing and querying the progress of the task, so a database table needs to be designed to store task-related data. The sample code is as follows:

CREATE TABLE tasks (
    id INT AUTO_INCREMENT PRIMARY KEY,
    openid VARCHAR(255),
    title VARCHAR(255),
    progress INT
);

4. Add task
   In the mini program, users can create a new task through the add task function and specify the title of the task. Once the user creates a new task, we need to store the task data in the database in the background. The sample code is as follows:

<?php
session_start();
$openid = $_SESSION['openid'];

$title = $_POST['title']; // 从小程序的表单中获取任务标题

// 将任务数据插入到数据库中
$conn = new mysqli("localhost", "username", "password", "database");
$sql = "INSERT INTO tasks (openid, title, progress) VALUES ('$openid', '$title', 0)";
$conn->query($sql);

echo "任务创建成功";
?>

Please replace the username, password and database in the above code with your own database username, password and database name.

5. Update task progress
   In the mini program, users can update the progress of the task through the update task progress function. Once the user updates the progress of a task, we need to update the task data to the database in the background. The sample code is as follows:

<?php
session_start();
$openid = $_SESSION['openid'];

$taskId = $_POST['taskId']; // 从小程序的表单中获取要更新的任务ID
$progress = $_POST['progress']; // 从小程序的表单中获取任务的新进度

// 更新任务的进度到数据库中
$conn = new mysqli("localhost", "username", "password", "database");
$sql = "UPDATE tasks SET progress = $progress WHERE id = $taskId AND openid = '$openid'";
$conn->query($sql);

echo "任务进度更新成功";
?>

Please replace the username, password and database in the above code with your own database username, password and database name.

Through the above steps, we can use PHP to implement the task progress function of the WeChat applet. It should be noted that the above code is only a sample code, and it needs to be appropriately modified and adjusted according to specific business needs during actual application. I hope this article can be helpful in using PHP to implement the task progress function of WeChat applet!

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