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<?php $array = [ [ 'name' => 'Foo', 'children' => [ 'B', 'A' ] ], [ 'name' => 'Bar', 'children' => [ 'Z', 'X', 'Y' ] ] ]; usort($array, function(&$x, &$y) { sort($x['children']); sort($y['children']); return strcasecmp($x['name'], $y['name']); }); var_dump($array);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: {closure}(): Argument #1 ($x) must be passed by reference, value given in /in/qX95B on line 21 Warning: {closure}(): Argument #2 ($y) must be passed by reference, value given in /in/qX95B on line 21 array(2) { [0]=> array(2) { ["name"]=> string(3) "Bar" ["children"]=> array(3) { [0]=> string(1) "Z" [1]=> string(1) "X" [2]=> string(1) "Y" } } [1]=> array(2) { ["name"]=> string(3) "Foo" ["children"]=> array(2) { [0]=> string(1) "B" [1]=> string(1) "A" } } }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: {closure}(): Argument #1 ($x) must be passed by reference, value given in /in/qX95B on line 25 Warning: {closure}(): Argument #2 ($y) must be passed by reference, value given in /in/qX95B on line 25 array(2) { [0]=> array(2) { ["name"]=> string(3) "Bar" ["children"]=> array(3) { [0]=> string(1) "Z" [1]=> string(1) "X" [2]=> string(1) "Y" } } [1]=> array(2) { ["name"]=> string(3) "Foo" ["children"]=> array(2) { [0]=> string(1) "B" [1]=> string(1) "A" } } }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
array(2) { [0]=> array(2) { ["name"]=> string(3) "Bar" ["children"]=> array(3) { [0]=> string(1) "Z" [1]=> string(1) "X" [2]=> string(1) "Y" } } [1]=> array(2) { ["name"]=> string(3) "Foo" ["children"]=> array(2) { [0]=> string(1) "B" [1]=> string(1) "A" } } }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
array(2) { [0]=> array(2) { ["name"]=> string(3) "Bar" ["children"]=> array(3) { [0]=> string(1) "X" [1]=> string(1) "Y" [2]=> string(1) "Z" } } [1]=> array(2) { ["name"]=> string(3) "Foo" ["children"]=> array(2) { [0]=> string(1) "A" [1]=> string(1) "B" } } }
preferences:
125.21 ms | 402 KiB | 182 Q