Sorting a multidimensional array by child array

Question

I need to sort an array like this

     [0] => Array
            (
                [id] => 5
                [stats] => Array
                    (
                        [SessionsPlayed] => 1
                    )

            )
     [1] => Array
            (
                [id] => 88
                [stats] => Array
                    (
                        [SessionsPlayed] => 6
                    )

            )
     [2] => Array
            (
                [id] => 22
                [stats] => Array
                    (
                        [SessionsPlayed] => 9
                    )

            )

So that it is in descending order by the SessionPlayed column like this.

     [2] => Array
            (
                [id] => 22
                [stats] => Array
                    (
                        [SessionsPlayed] => 9
                    )

            )
     [1] => Array
            (
                [id] => 88
                [stats] => Array
                    (
                        [SessionsPlayed] => 6
                    )

            )
     [0] => Array
            (
                [id] => 5
                [stats] => Array
                    (
                        [SessionsPlayed] => 1
                    )

            )

I have attempted to look online on how to solve this but all of the answer I find can only sort down one child ( ex. the id column ) Here are the posts I looked at. https://stackoverflow.com/a/16788610/1319033 https://stackoverflow.com/a/2699110/1319033

possible duplicate of Reference: all basic ways to sort arrays and data in PHP — Sverri M. Olsen
– Sverri M. Olsen, Commented Jun 4, 2014 at 17:46

Felk · Accepted Answer · 2014-06-04 17:21:26Z

3

Use PHP's usort

usort($array, function($a, $b) {
    return $b['stats']['SessionsPlayed'] - $a['stats']['SessionsPlayed'];
    // $b - $a for descending order
});

answered Jun 4, 2014 at 17:21

Felk

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1 Comment

Felk Over a year ago

The way I showed here. usort sorts an array and uses an user-defines comparing function

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