php - Transform simple array in hierarchy array -

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i'm looping trough below array has multiple entries. in example have 3 elements each element have 3 values inside.

[0]    ['name'] => 'aaa'    ['id'] => 38679    ['parent-id'] => 0 [1]    ['name'] => 'bbb'    ['id'] => 38830    ['parent-id'] => 38679 [2]    ['name'] => 'ccc'    ['id'] => 38680    ['parent-id'] => 38830

so, looping trough array, need construct 1 in format (the idea construct hierarchy):

[0]    [38679] => 'aaa'           [38830] => 'bbb'                  [38680] => 'ccc'

maybe there's way this. suggestion great.

one of possible solutions use recursive function:

$test = [     0 => [         'name' => 'aaa',         'id' => 38679,         'parent-id' => 0     ],     1 => [         'name' => 'bbb',         'id' => 38830,         'parent-id' => 38679     ],     2 => [         'name' => 'ccc',         'id' => 38680,         'parent-id' => 38830     ] ];  function make_hierarchy(array $arr, $parent = 0) {     $result = array();      foreach($arr $item) {         if ($item['parent-id'] == $parent) {             $children = make_hierarchy($arr, $item['id']);             $child = $item;             if ($children) {                 $child['children'] = $children;             }             $result[] = $child;         }     }     return $result; }  $r = make_hierarchy($test);  var_dump($r);

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