如何在MVC中使用SQL Query显示所有行数据，而不是只显示第一行

function getAllRows() {
    $conn = new mysqli("数据库服务器地址", "用户名", "密码", "数据库名");
    if ($conn->connect_error) {
        die("连接数据库失败: " . $conn->connect_error);
    }

    $sql = "SELECT * FROM 表名";
    $result = $conn->query($sql);

    $rows = array();
    if ($result->num_rows > 0) {
        while ($row = $result->fetch_assoc()) {
            $rows[] = $row;
        }
    }

    $conn->close();

    return $rows;
}

function showAllRows() {
    $model = new Model(); // 假设模型类名为Model
    $rows = $model->getAllRows();

    $view = new View(); // 假设视图类名为View
    $view->render("all_rows_view", array("rows" => $rows));
}

<table>
    <thead>
        <tr>
            <th>列1</th>
            <th>列2</th>
            <!-- 其他列 -->
        </tr>
    </thead>
    <tbody>
        <?php foreach ($rows as $row): ?>
            <tr>
                <td><?php echo $row['列1']; ?></td>
                <td><?php echo $row['列2']; ?></td>
                <!-- 其他列 -->
            </tr>
        <?php endforeach; ?>
    </tbody>
</table>