Put array variables in order

Question

Here's my array:

    [a] => apple
    [b] => banana
    [c] => Array
    (
        [2] => x
        [4] => y
        [6] => z
    )

I'm looking for a way to put my [c] array variables in "order". Making my array, look like this:

    [a] => apple
    [b] => banana
    [c] => Array
(
        [1] => x
        [2] => y
        [3] => z
)

Is there a way to do it without creating a new function by myself?

Answer 1

Just try with reassigning c value:

$data['c'] = array_values($data['c']);

It will reindex your c array, but the indexes will start with 0 . If you really want to start with 0 , try:

$data['c'] = array_combine(range(1, count($data['c'])), array_values($data['c']))

Answer 2

Fortunately PHP provides a lot of functions for array sorting , you don't have to write another one.

Try sort($a['c']) (assuming your array is stored in the $a variable).

$a = array(
    'a' => 'apple',
    'b' => 'banana',
    'c' => array(
        '1' => 'x',
        '2' => 'y',
        '3' => 'z',
    ),
);

sort($a['c']);
print_r($a);

The output:

Array
(
    [a] => apple
    [b] => banana
    [c] => Array
        (
            [0] => x
            [1] => y
            [2] => z
        )
)

If you don't need to sort the content of $a['c'] and only want to re-index it (let it have numeric consecutive keys starting with 0 ) then array_values() is all it needs:

$a['c'] = array_values($a['c']);

Answer 3

If you don't know how many arrays needs to be sorted, try this:

$testarr = ['a' => 'apple', 'b' => 'banana', 'c' => ['x', 'y', 'z']];

foreach ($testarr as $key => $item) {
    if (is_array($item)) { $arr[$key] = array_values($item); }
    // if (is_array($item)) { $arr[$key] = asort($item); } // use asort() if you want to keep subarray keys
}