Usort Without Replacing Keys PHP [duplicate]

Question

I am having MAJOR usort() issues! :( So basically I want to sort my array by their values. I would like the values to display in this order: Platinum, Gold, Silver, Bronze, Complete, None, Uncomplete. Now I can sort them well, but I would like to preserve their key (is that possible?). here is my code:

function compareMedals( $a, $b ) {
    $aMap = array(1 => 'Platinum', 2 => 'Gold', 3 => 'Silver', 4 => 'Bronze', 5 => 'Complete', 6 => 'None', 7 => 'Uncomplete');
    $aValues = array( 1, 2, 3, 4, 5, 6, 7);
    $a = str_ireplace($aMap, $aValues, $a);
    $b = str_ireplace($aMap, $aValues, $b);
    return $a - $b;
}
usort($list, 'compareMedals');

So is it possible to sort them WHILE preserving their keys? Thank You! :)

EDIT

Array:

$array = array("post1" => 'Platinum', "Post2" => "Bronze, "Post3" = > Gold)

Should output:

"Post1" => 'Platinum',
"Post3" => 'Gold',
"Post2" => 'Bronze'

Yet it is outputting this:

"0" => 'Platinum',
"1" => 'Gold',
"2" => 'Bronze'

Answer 1

Just use uasort intead of usort. Definition of uasort is

Sort an array with a user-defined comparison function and maintain index association.

There is an example of code with your comparing function and uasort:

$list = array('post1' => 'Gold', 'post2' => 'None', 'post3' => 'Platinum');

function compareMedals( $a, $b ) {
    $aMap = array(1 => 'Platinum', 2 => 'Gold', 3 => 'Silver', 4 => 'Bronze', 5 => 'Complete', 6 => 'None', 7 => 'Uncomplete');
    $aValues = array( 1, 2, 3, 4, 5, 6, 7);
    $a = str_ireplace($aMap, $aValues, $a);
    $b = str_ireplace($aMap, $aValues, $b);
    return $a - $b;
}
uasort($list, 'compareMedals');

print_r($list);

That code gives result

Array
(
    [post3] => Platinum
    [post1] => Gold
    [post2] => None
)

Answer 2

usort did not preserve the key, if you want to preserve key after sort then you should use asort. Hope this help you.