PHP按元素ASC排序数组，然后按密钥ASC排序相同的值

Question

First of all i didnt find similar topic in stackoverflow although there is something from another user but the solution there didnt work for me (ASC/DESC).

I have the following array

Array
(
    [4] => 60
    [3] => 80
    [5] => 20
    [2] => 0
    [1] => 0
    [6] => 30
)

The result must be the following:

Array
(
    [1] => 0
    [2] => 0 
    [5] => 20
    [6] => 30
    [4] => 60
    [3] => 80
)

I just tryed to do and become confused.

**

EDIT

**

asort() Doesnt work on this array

$array = array(
    4 => 60,
    3 => 80,
    5 => 20,
    1 => 0,
    2 => 0,
    6 => 30
);

The result of asort is:

Array
(
    [2] => 0
    [1] => 0
    [5] => 20
    [6] => 30
    [4] => 60
    [3] => 80
)

Which is wrong, since the key 2 must be after the key 1

Thank you

Answer 1

EDIT: Slightly more complicated...

$array = array(
    4 => 60,
    3 => 80,
    5 => 20,
    2 => 0,
    1 => 0,
    6 => 30
);

$keys = array_keys($array);
$values = array_values($array);
array_multisort($values, SORT_ASC, $keys, SORT_ASC);
$array = array_combine($keys, $values);
print_r($array);