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HomeBackend DevelopmentPHP TutorialHow to use PHP to develop the task sharing function of WeChat applet?
How to use PHP to develop the task sharing function of WeChat applet?Oct 26, 2023 pm 12:49 PM
WeChat appletphp developmentTask sharing

How to use PHP to develop the task sharing function of WeChat applet?

How to use PHP to develop the task sharing function of WeChat applet?

With the popularity of WeChat mini programs, developers have increasingly diverse functional requirements for mini programs. Among them, the task sharing function is a common functional requirement in many small programs. Through the task sharing function, users can share tasks or activities with friends or group chats, thereby increasing user activity and social interaction.

This article will introduce how to use PHP to develop the task sharing function of WeChat applet and provide specific code examples.

  1. Get the AppID and AppSecret of the mini program
    First, you need to apply for a mini program on the WeChat public platform and obtain the AppID and AppSecret of the mini program. This will serve as your credentials for using the PHP development task sharing feature.
  2. Define the data structure of shared tasks
    Before developing the task sharing function, we need to define the data structure of the task. Generally speaking, a task includes task title, task content, task picture, etc. You can define the data structure of the task according to your actual needs.

For example, we define the data structure of a task as follows:

{
  "title": "完成任务",
  "content": "完成任务并分享给好友",
  "image": "http://example.com/task.png"
}
  1. Generate small program code for sharing tasks
    Next, we need to use PHP to generate sharing tasks small program code. Mini program code is a special QR code. After scanning the QR code, users can directly enter the designated page of the mini program.

Here we use the mini program code API provided by WeChat to generate mini program code. First, get the URL of the mini program code:

$appid = 'your_appid';
$secret = 'your_appsecret';

$accessToken = getAccessToken($appid, $secret); // 获取访问令牌

$apiUrl = 'https://api.weixin.qq.com/wxa/getwxacode?access_token='.$accessToken;

Then, use curl to initiate a request and generate the image file of the mini program code:

$postData = array(
  'path' => 'pages/index', // 小程序的页面路径,可以根据实际需求修改
  'width' => 128, // 小程序码的宽度,可以根据实际需求修改
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $apiUrl);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($postData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

file_put_contents('/path/to/task.png', $response); // 将小程序码保存为图片文件
  1. Implement the sharing task logic
    Finally, We need to implement the logic of sharing tasks. When the user clicks the share task button, we can share the task to the WeChat group chat or friend list.

First, get the user's openid:

$code = $_GET['code']; // 从小程序端获取用户的code
$url = 'https://api.weixin.qq.com/sns/jscode2session?appid='.$appid.'&secret='.$secret.'&js_code='.$code.'&grant_type=authorization_code';

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

$result = json_decode($response, true);
$openid = $result['openid']; // 用户的openid

Then, use the openid to generate the sharing link:

$task = array(
  "title" => "完成任务",
  "content" => "完成任务并分享给好友",
  "image" => "http://example.com/task.png"
);

$shareLink = 'http://example.com/share.php?task='.urlencode(json_encode($task)).'&openid='.$openid;

Finally, process the sharing link and task data on the mini program side You can realize the function of sharing tasks.

This article introduces how to use PHP to develop the task sharing function of WeChat applet and provides specific code examples. By reading this article, you can master how to use PHP to generate small program code and implement task sharing logic. Hope this helps!

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