How to use PHP to develop a points mall for WeChat public accounts

How to use PHP to develop a points mall for WeChat public accounts

With the popularity and development of WeChat public accounts, more and more companies are beginning to pay attention to and use WeChat public accounts number for marketing and promotion. Among them, the points mall is a common and popular function. By redeeming points for products, user stickiness and participation can be enhanced. This article will introduce in detail how to use PHP to develop a points mall for WeChat official accounts and provide specific code examples.

The following are the steps to implement the WeChat public account points mall:

Step 1: Create a WeChat public account
First, you need to register on the WeChat public account platform and create a public account . Get the necessary parameters like AppID and AppSecret, which will be used in the code.

Step 2: Connect to the WeChat public platform
To achieve connection with the WeChat public platform, you need to build a server, which can be a local server or a cloud server. Deploy the PHP environment on the server and configure the domain name.
Next, you need to obtain the message interface configuration information of the WeChat public platform. In the development-basic configuration of the official account backend, fill in the server address (URL), Token, EncodingAESKey and other information, and submit it for verification. After passing the verification, your server will be successfully connected to the WeChat public platform.

Step 3: Develop the points mall function

1. Get user information
   When a user follows your official account, you need to obtain the user’s OpenID. Through OpenID, you can record and manage user points in various scenarios.

// 首先，获取微信公众号的用户授权
// 在微信公众号菜单或其他场景下，引导用户点击授权按钮跳转到一个授权页面
// 获取用户授权后，微信会回调一个授权码 code 给你的后端
// 根据 code 来获取用户的 OpenID

$code = $_GET['code'];
$apiUrl = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=YourAppID&secret=YourAppSecret&code=".$code."&grant_type=authorization_code";

$result = file_get_contents($apiUrl);
$result = json_decode($result, true);

$openid = $result['openid'];

2. Points management function
   Create a user table and points record table in the database. The user table is used to store the user's OpenID and point balance, and the points record table is used to record the user's point operations.

// 假设数据库连接已经建立并且选中了目标数据库
// 用户表的结构：id, openid, balance
// 积分记录表的结构：id, openid, type, points, created_at

// 获取用户积分余额
$sql = "SELECT balance FROM user WHERE openid = '$openid'";
$result = mysqli_query($conn, $sql);
$row = mysqli_fetch_assoc($result);
$balance = $row['balance'];

// 积分记录
$sql = "INSERT INTO points (openid, type, points, created_at) VALUES ('$openid', '$type', '$points', NOW())";
mysqli_query($conn, $sql);

// 更新用户积分余额
$newBalance = $balance + $points;
$sql = "UPDATE user SET balance = '$newBalance' WHERE openid = '$openid'";
mysqli_query($conn, $sql);

3. Points mall page and functions
   Create a points mall page so that users can browse products and redeem points.

// 假设商品表的结构：id, name, points, image

// 查询商品列表
$sql = "SELECT * FROM goods";
$result = mysqli_query($conn, $sql);

// 显示商品列表
while ($row = mysqli_fetch_assoc($result)) {
    echo "<div>";
    echo "<img  src='".$row['image']."' alt="How to use PHP to develop a points mall for WeChat public accounts" >";
    echo "<h3>".$row['name']."</h3>";
    echo "<p>积分：".$row['points']."</p>";
    echo "<button onclick='exchange(".$row['id'].")'>兑换</button>";
    echo "</div>";
}

// 积分兑换
function exchange($id) {
    // 查询商品积分
    $sql = "SELECT points FROM goods WHERE id = '$id'";
    $result = mysqli_query($conn, $sql);
    $row = mysqli_fetch_assoc($result);
    $points = $row['points'];

    // 判断用户积分是否足够
    if ($balance < $points) {
        echo "积分不足，无法兑换";
    } else {
        // 扣除用户积分
        $newBalance = $balance - $points;
        $sql = "UPDATE user SET balance = '$newBalance' WHERE openid = '$openid'";
        mysqli_query($conn, $sql);

        // 记录积分操作
        $sql = "INSERT INTO points (openid, type, points, created_at) VALUES ('$openid', 'exchange', '$points', NOW())";
        mysqli_query($conn, $sql);

        echo "兑换成功";
    }
}

Step 4: Set up the WeChat public account menu
Use the custom menu interface of the WeChat public account and set the link to the points mall as a menu button.

$apiUrl = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=YourAccessToken";

$data = '{
    "button": [
        {
            "name": "积分商城",
            "type": "view",
            "url": "http://yourdomain.com/mall.php"
        }
    ]
}';

$result = curl_post($apiUrl, $data);

The above are the main steps and code examples for using PHP to develop a WeChat official account points mall. Through the above steps, you can quickly build a simple points mall and implement user points management and product redemption functions. Of course, the specific implementation needs to be adjusted and improved according to your specific needs.

I wish you success in developing WeChat public accounts!

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