Natsort inside of loop

Question

Please see the comments. I realized that the question(s) I should be asking are in another place altogether in my case, perhaps that'll be useful to you.

I am trying to optimize my cod a bit and at first, I am generating an array of strings: [String1, String3, String2] from an object. Problem is, I do it like this:

$collection = [...];

$strings = array_map(
    function( $item ) {
        return $item->getName();
    },
    $collection
);

natsort( $strings )

Is there no way to do the sorting as I loop using array_map? This is hogging performance when combined with other things.