Online PHP editor | refs for bNM61

<?php function recurse(&$array, $pid = null) { foreach ($array as $id => $item) { if (isset($item->params->data->menu_display_special) && $item->params->data->menu_display_special == 1) { unset($array[$id]); recurse($array, $item->id); } elseif ($item->parent_id === $pid) { unset($array[$id]); } } } $list = [ 35 => (object)[ 'id' => '2375', 'params' => (object)[ 'data' => (object)[ 'menu_display_special' => '1' ] ], 'parent_id' => '2376', 'parent' => false ], 36 => (object)[ 'id' => '2377', 'params' => (object)[ 'data' => (object)[ 'menu_display_special' => '1' ] ], 'parent_id' => '2376', 'parent' => false ], 37 => (object)[ 'id' => '2379', 'params' => (object)[ 'data' => (object)[ 'menu_display_special' => '1' ] ], 'parent_id' => '2377', 'parent' => false ], 38 => (object)[ 'id' => '2380', 'params' => (object)[ 'data' => (object)[ 'menu_display_special' => '1' ] ], 'parent_id' => '2377', 'parent' => false ], 39 => (object)[ 'id' => '2381', 'params' => (object)[ 'data' => (object)[] ], 'parent_id' => '2377', 'parent' => false ], 40 => (object)[ 'id' => '2378', 'params' => (object)[ 'data' => (object)[] ], 'parent_id' => '2376', 'parent' => false ], ]; recurse($list); var_export($list);