PHP asort by value ASC, value 0 should go last

Question

I have the following array:

$values = [
  'a' => 0,
  'b' => 1,
  'c' => 0,
  'd' => 3,
  'e' => 2
];

I need to be able to sort it like so:

$values = [
  'b' => 1,
  'e' => 2,
  'd' => 3,
  'a' => 0,
  'c' => 0
];

The fastest solution I managed to come up with is:

$zero = array_filter($values, fn($val) => $val === 0);

$non_zero = array_diff_assoc($values, $zero);
asort($non_zero);

$result = array_merge($non_zero, $zero);

Sorting rules:

• keys need to be preserved
• key order does not matter for the same value

My question is: is there a better way to do this?

Here is a sandbox version

Thank you!

UPDATE

It looks like this one might work too:

asort($values);
uasort($values, function($a, $b){
    return $a === 0 ? 1 : -1;
});

Sandbox for this version

Any better ideas?

Answer 1

I managed to come up with this solution which looks decent:

$values = [
  'i' => 2,
  'a' => 0,
  'b' => 1,
  'f' => 1,
  'c' => 0,
  'd' => 3,
  'g' => 3,
  'e' => 2,
  'h' => 3,
];

uasort($values, function($a, $b){
    if ($a === 0) {
        return 1;
    }
    
    if ($b === 0 || $a === $b) {
        return 0;
    }
    
    return $a < $b && $b !== 0 ? -1 : 1;
});

And it appears to be returning the expected output on all cases:

Array
(
    [b] => 1
    [f] => 1
    [i] => 2
    [e] => 2
    [d] => 3
    [g] => 3
    [h] => 3
    [c] => 0
    [a] => 0
)