Online PHP editor | output for clCk4

<?php public function add(Request $request) { $cart_array = Session::get('products-cart'); $cart = collect($cart_array); if (!$cart->has(['id' => $request->product_id])) { $cart->push(['id' => $request->product_id, 'count' => $request->product_qty]); } else{ $cart = $cart->map(function(&$item) use ($request) { if ($item['id'] === $request->product_id) { $item['count'] += $request->product_qty ?? 1; } return $item; }); } Session::push('products-cart', $cart->toArray()); return redirect()->back(); }