PHPを使用して開発されたショッピングモールユーザーの閲覧足跡記録の分析

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL,
    email VARCHAR(50) NOT NULL,
    password VARCHAR(255) NOT NULL
);

CREATE TABLE browsing_history (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT NOT NULL,
    product_id INT NOT NULL,
    viewed_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (product_id) REFERENCES products(id)
);

function recordBrowsingHistory($userId, $productId) {
    // 连接数据库
    $conn = mysqli_connect("localhost", "username", "password", "database");

    // 检查数据库连接是否成功
    if (!$conn) {
        die("数据库连接失败: " . mysqli_connect_error());
    }

    // 插入浏览记录到数据库
    $sql = "INSERT INTO browsing_history (user_id, product_id) VALUES ('$userId', '$productId')";
    if (mysqli_query($conn, $sql)) {
        echo "浏览记录插入成功";
    } else {
        echo "插入错误: " . mysqli_error($conn);
    }

    // 关闭数据库连接
    mysqli_close($conn);
}

// 获取当前登录用户的ID
$userId = $_SESSION['user_id'];

// 获取当前浏览商品的ID
$productId = $_GET['product_id'];

// 调用记录浏览足迹的函数
recordBrowsingHistory($userId, $productId);

function analyzeBrowsingHistory($userId) {
    // 连接数据库
    $conn = mysqli_connect("localhost", "username", "password", "database");

    // 检查数据库连接是否成功
    if (!$conn) {
        die("数据库连接失败: " . mysqli_connect_error());
    }

    // 查询用户的浏览足迹记录
    $sql = "SELECT product_id FROM browsing_history WHERE user_id = '$userId'";
    $result = mysqli_query($conn, $sql);

    // 统计每个商品的浏览次数
    $productViews = array();
    while ($row = mysqli_fetch_assoc($result)) {
        $productId = $row['product_id'];
        if (!isset($productViews[$productId])) {
            $productViews[$productId] = 1;
        } else {
            $productViews[$productId]++;
        }
    }

    // 根据浏览次数排序商品
    arsort($productViews);

    // 输出购物兴趣排行榜
    echo "购物兴趣排行榜：<br>";
    foreach ($productViews as $productId => $views) {
        echo "商品ID：$productId，浏览次数：$views<br>";
    }

    // 关闭数据库连接
    mysqli_close($conn);
}