3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ [ 'id' => 1, 'pid' => 1, 'name' => 'admin', 'children' => [ 'id' => 158, 'pid' => 1, 'name' => '000c', 'children' => [ ['id' => 93, 'pid' => 72, 'name' => '000c11'], ['id' => 96, 'pid' => 72, 'name' => '000c12'], ] ] ] ]; $arr = []; array_walk_recursive($array, function($v, $k, &$arr) { if($k === "name") $arr[] = $v; }, $arr); $arr = array_reverse($arr); print_r($arr);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 19 Array ( )
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Warning: {closure}(): Argument #3 ($arr) must be passed by reference, value given in /in/bo3lv on line 21 Array ( )
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Array ( )
Output for 5.4.0
Fatal error: [] operator not supported for strings in /in/bo3lv on line 20
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/bo3lv on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/bo3lv on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/bo3lv on line 2
Process exited with code 255.
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255.08 ms | 401 KiB | 340 Q