How to Sort a Multi-Dimensional PHP Array by an Inner Array Value?

Sorting a Multi-Dimensional PHP Array by an Inner Array Value

To sort a multi-dimensional PHP array based on a specific value in the inner array, you can employ a custom sorting function.

Custom Sorting Function:

<code class="php">function array_sort($array, $on, $order = SORT_ASC) {
    $new_array = [];
    $sortable_array = [];

    if (count($array) > 0) {
        foreach ($array as $key => $value) {
            if (is_array($value)) {
                foreach ($value as $key2 => $value2) {
                    if ($key2 == $on) {
                        $sortable_array[$key] = $value2;
                    }
                }
            } else {
                $sortable_array[$key] = $value;
            }
        }

        switch ($order) {
            case SORT_ASC:
                asort($sortable_array);
                break;
            case SORT_DESC:
                arsort($sortable_array);
                break;
        }

        foreach ($sortable_array as $key => $value) {
            $new_array[$key] = $array[$key];
        }
    }

    return $new_array;
}</code>

Usage:

<code class="php">$list = array(
    array('type' => 'suite', 'name' => 'A-Name'),
    array('type' => 'suite', 'name' => 'C-Name'),
    array('type' => 'suite', 'name' => 'B-Name')
);

$list = array_sort($list, 'name', SORT_ASC);

print_r($list);</code>

Output:

<code class="php">array(3) { [0]=> array(2) { ["type"]=> string(5) "suite" ["name"]=> string(6) "A-Name"    } [2]=> array(2) { ["type"]=> string(5) "suite" ["name"]=> string(6) "B-Name" } [1]=> array(2) { ["type"]=> string(5) "suite" ["name"]=> string(6) "C-Name" } }</code>

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