PHP - 按SubArray值排序数组通过维护原始Array键

Question

I would like to Sort an Array with its sub array value ("Name") but keeping its original array key.

default Array:

Array (
    [251] => Array
        (
            [color] => 
            [name] => 8
            [nbr] => 1
            [url_name] => taille-8
            [meta_title] => 
        )

    [323] => Array
        (
            [color] => 
            [name] => 7
            [nbr] => 2
            [url_name] => taille-7
            [meta_title] => 
        )

    [127] => Array
        (
            [color] => 
            [name] => 34
            [nbr] => 2
            [url_name] => taille-34
            [meta_title] => 
        )
);

By using array_multisort, I can able to get following Array:

Array(
    [0] => Array
        (
            [color] => 
            [name] => 7
            [nbr] => 2
            [url_name] => taille-7
            [meta_title] => 
        )

    [1] => Array
        (
            [color] => 
            [name] => 8
            [nbr] => 1
            [url_name] => taille-8
            [meta_title] => 
        )

    [2] => Array
        (
            [color] => 
            [name] => 34
            [nbr] => 2
            [url_name] => taille-34
            [meta_title] => 
        )
);

But what i need is,

Array(
    [323] => Array
        (
            [color] => 
            [name] => 7
            [nbr] => 2
            [url_name] => taille-7
            [meta_title] => 
        )

    [251] => Array
        (
            [color] => 
            [name] => 8
            [nbr] => 1
            [url_name] => taille-8
            [meta_title] => 
        )

    [127] => Array
        (
            [color] => 
            [name] => 34
            [nbr] => 2
            [url_name] => taille-34
            [meta_title] => 
        )
);

Thanks in adv :)

Answer 1

$arr being your array:

//obtain list of values to sort by
foreach ($arr as $id => $value) {
    $names[$id] = $value['name'];
}
$keys = array_keys($arr);
array_multisort(
    $names, SORT_ASC, SORT_NUMERIC, $arr, $keys
);
$result = array_combine($keys, $arr);

You were probably missing the last step combining the array with given keys.