Question

I need some clarity as to what PHP function can achieve what I’m aiming for.

This is a PHP array I have:

Array
(
[0] => Array
    (
        [id] => 6
        [index] => 1
        [active] => 1
        [name] => MyName
    )

[1] => Array
    (
        [id] => 1
        [index] => 2
        [active] => 1
        [name] => YourName
    )

[2] => Array
    (
        [id] => 2
        [index] => 4
        [active] => 1
        [name] => TheirName
    )
}

I want to take the “index” value and make it a KEY of that array parent, so the array would become this:

Array
(
[1] => Array
    (
        [id] => 6
        [index] => 1
        [active] => 1
        [name] => MyName
    )

[2] => Array
    (
        [id] => 1
        [index] => 2
        [active] => 1
        [name] => YourName
    )

[4] => Array
    (
        [id] => 2
        [index] => 4
        [active] => 1
        [name] => TheirName
    )
}

Can anyone please tell me how would I do this in PHP?

Thank you in advance.

Answer 1

Not the most elegant solution, but it works (it doesn’t actually move the array, it just generates a new one that corresponds to your requirements):

$resultArr = array();
foreach ($mainArr as $value) {
    $resultArr[$value['index']] = $value;
}
unset($mainArr); // or $mainArr = $resultArr;

This way you won’t overwrite any existing keys in your original array.