How to sort such an array?

Question

PHP

there is an array:

Array
(
    [Pinaceae Lindl.] => Array
        (
            [aborigen_count_rod] => Array
                (
                    [0] => 1
                )

            [aborigen_count_vid] => Array
                (
                    [0] => 2
                )

        )

    [Asteraceae Dumort.] => Array
        (
            [aborigen_count_rod] => Array
                (
                    [0] => 1
                )

            [aborigen_count_vid] => Array
                (
                    [0] => 1
                )

        )

    [Adoxaceae Trautv.] => Array
        (
            [aborigen_count_rod] => Array
                (
                    [0] => 1
                )

            [aborigen_count_vid] => Array
                (
                    [0] => 3
                )

        )

    [Magnoliopsida] => Array
        (
            [aborigen_count_rod] => Array
                (
                    [0] => 1
                )

            [aborigen_count_vid] => Array
                (
                    [0] => 1
                )

        )

)

How to sort by [aborigen_count_vid] in descending order without breaking the parent?

Answer 1

uasort($count_data, function($a, $b) {
  if ($a['aborigen_count_vid'][0] === $b['aborigen_count_vid'][0]) return 0;
  return $a['aborigen_count_vid'][0] < $b['aborigen_count_vid'][0] ? 1 : -1;
});

Answer 2

use standard uasort