从mysqli结果中回显来自不同列的不同列值

$link = mysqli_connect("localhost", "username", "password", "database");
if (!$link) {
    die("连接数据库失败: " . mysqli_connect_error());
}

$query = "SELECT column1, column2, column3 FROM table";
$result = mysqli_query($link, $query);
if (!$result) {
    die("查询失败: " . mysqli_error($link));
}

while ($row = mysqli_fetch_assoc($result)) {
    echo "column1的值：" . $row['column1'] . "<br>";
    echo "column2的值：" . $row['column2'] . "<br>";
    echo "column3的值：" . $row['column3'] . "<br>";
}