如何让我的PHP从数据库输出两个值

<?php
// 连接数据库
$servername = "数据库服务器地址";
$username = "数据库用户名";
$password = "数据库密码";
$dbname = "数据库名称";

$conn = mysqli_connect($servername, $username, $password, $dbname);
if (!$conn) {
    die("数据库连接失败: " . mysqli_connect_error());
}

// 执行查询
$sql = "SELECT value1, value2 FROM your_table";
$result = mysqli_query($conn, $sql);

// 获取结果并输出
if (mysqli_num_rows($result) > 0) {
    while ($row = mysqli_fetch_assoc($result)) {
        $value1 = $row['value1'];
        $value2 = $row['value2'];
        echo "值1：" . $value1 . "<br>";
        echo "值2：" . $value2 . "<br>";
    }
} else {
    echo "没有找到匹配的结果";
}

// 关闭数据库连接
mysqli_close($conn);
?>