Laravel 4 foreach循环-想要显示最后一个元素

Question

I am currently trying to set up an edit page where an order form is populated using json_decode to decode json information that was saved when the form was created. Because the form's size can change I have to create the correct number of inputs so that all the json data will have a place to be displayed. Fortunately as the inputs are numbered this should not be hard to do. Unfortunately I am not sure how to pick the last element of the json information that has been decoded. Currently I am using:

public function getEdit($id){
        $order = Order::where('id', '=', $id);

        if($order->count()) {
            $order                      = $order->first();
            $order->order_serialized    = json_decode($order->order_serialized);

            foreach($order->order_serialized as $key => $value){
                $order->$key = $value;
            }
            return View::make('orders.edit')
                    ->with('order', $order);
        }   else {
            return App::abort(404);
        }
    }

to decode the information and it is working splendidly but I need to be able to pick up the last element to be able to find the total number of inputs and am not sure how I could do this without disturbing the foreach loop. Any and all help would be greatly appreciated!! Thank you so much!

Answer 1

You can use the count and toArray methods to find the last item.

$nItem = $order->count();
$aOrder = $order->toArray();
$aLastItem = $aOrder[$nItem-1];

Answer 2

集合具有last()函数以补充first()函数。