为php中的所有行创建复选框

<?php
// 连接到数据库并获取数据
$conn = mysqli_connect("数据库主机", "用户名", "密码", "数据库名");
$query = "SELECT * FROM 表名";
$result = mysqli_query($conn, $query);

// 创建表格
echo "<table>";
echo "<tr><th><input type='checkbox' id='select-all'></th><th>列名1</th><th>列名2</th></tr>";

// 遍历每一行数据
while ($row = mysqli_fetch_assoc($result)) {
    echo "<tr>";
    echo "<td><input type='checkbox' name='selected_rows[]' value='" . $row['id'] . "'></td>";
    echo "<td>" . $row['column1'] . "</td>";
    echo "<td>" . $row['column2'] . "</td>";
    echo "</tr>";
}

echo "</table>";

// 关闭数据库连接
mysqli_close($conn);
?>