items = [ [ 'uri' => '/', 'label' => 'Albums', ], [ 'uri' => '/people/', 'label' => 'People', ], [ 'uri' => '/timeline/', 'label' => 'Timeline', ], ]; foreach ($this->items as $i => $item) { if (isset($item['uri'])) $this->items[$i]['url'] = BASEURL . $item['uri']; if (!isset($item['subs'])) continue; foreach ($item['subs'] as $j => $subitem) $this->items[$i]['subs'][$j]['url'] = BASEURL . $subitem['uri']; } } }