更改输出变量MySQL查询

Question

如果我执行这种查询：

<?php
SELECT * FROMloginwhereemail = 'something@something.com';
$result = mysqli_query($connection, $query) or die("Query error");
while ($row = mysqli_fetch_array($result)) {
    $id = $row['id'];
    $email = $row['email'];
    $first_name = $row['first_name'];
    //(......)
}
?>

有没有一种方法可以使MySQL结果具有不同的变量名？ 我的意思是：

SELECT (first_name as foo) FROM login where email = 'something@something.com';

$first_name = $row['foo'];