PHPで開発した中古リサイクルサイト、ユーザーの消費実績閲覧機能を実現

CREATE TABLE `consumption_records` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `item_id` int(11) NOT NULL,
  `amount` decimal(10,2) NOT NULL,
  `order_date` datetime NOT NULL,
  PRIMARY KEY (`id`)
);

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
?>

<?php
$user_id = $_GET['user_id']; // 获取用户ID

$sql = "SELECT * FROM consumption_records WHERE user_id = '$user_id' ORDER BY order_date DESC";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    echo "<table>";
    echo "<tr><th>ID</th><th>用户ID</th><th>商品ID</th><th>金额</th><th>创建时间</th></tr>";
    while($row = $result->fetch_assoc()) {
        echo "<tr>";
        echo "<td>" . $row["id"] . "</td>";
        echo "<td>" . $row["user_id"] . "</td>";
        echo "<td>" . $row["item_id"] . "</td>";
        echo "<td>" . $row["amount"] . "</td>";
        echo "<td>" . $row["order_date"] . "</td>";
        echo "</tr>";
    }
    echo "</table>";
} else {
    echo "没有找到相关记录";
}

$conn->close();
?>