foreach ($menus as $menus_v){                                                                                                                                                                                                                      $$ menus as $menus_v){                     if($menus_v['parent_id'] != $menus_v['smid']){                         $a[$menus_v['parent_id']]['children'][$menus_v['smid'] ] = $menus_v;                                                            ​                                                                     #I have always had problems writing like this