Online PHP editor | output for DJCV3

@ 2023-05-27T13:39:40Z

<?php

$array = [
    ['id' => 15, 'parent' => 12],
    ['id' => 10, 'parent' => 12],
    ['id' => 12, 'parent' => 12],
    ['id' => 17, 'parent' => 12],
    ['id' => 21, 'parent' => 15],
    ['id' => 13, 'parent' => 15],
    ['id' => 15, 'parent' => 15],
    ['id' => 25, 'parent' => 15],
    ['id' => 7,  'parent' => 7],
    ['id' => 18, 'parent' => 7],
    ['id' => 4,  'parent' => 7],
    ['id' => 1,  'parent' => 3],
    ['id' => 5,  'parent' => 5],
    ['id' => 2,  'parent' => 7],
];

usort(
    $array,
    fn($a, $b) =>
        [$a['parent'], $a['id'] !== $a['parent'], $a['id']]
        <=>
        [$b['parent'], $b['id'] !== $b['parent'], $b['id']]
);
var_export($array);

Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12: array ( 0 => array ( 'id' => 1, 'parent' => 3, ), 1 => array ( 'id' => 5, 'parent' => 5, ), 2 => array ( 'id' => 7, 'parent' => 7, ), 3 => array ( 'id' => 2, 'parent' => 7, ), 4 => array ( 'id' => 4, 'parent' => 7, ), 5 => array ( 'id' => 18, 'parent' => 7, ), 6 => array ( 'id' => 12, 'parent' => 12, ), 7 => array ( 'id' => 10, 'parent' => 12, ), 8 => array ( 'id' => 15, 'parent' => 12, ), 9 => array ( 'id' => 17, 'parent' => 12, ), 10 => array ( 'id' => 15, 'parent' => 15, ), 11 => array ( 'id' => 13, 'parent' => 15, ), 12 => array ( 'id' => 21, 'parent' => 15, ), 13 => array ( 'id' => 25, 'parent' => 15, ), )

preferences:dark modelive previewkey bindings