public function addOrderItemToOrder(OrderItem $orderItem)
 {
     $insertor = new DBInsert('localhost', 'root', '', 'mydb');
     $insertor->insertNewOrderItem($this->orderID, $this->storeName, $orderItem->getItemName(), $orderItem->getQuantity(), $orderItem->getPrice());
 }
     array_push($_SESSION["orderitemsel"], $orderItem->getItemName());
     array_push($_SESSION["orderprice"], $orderItem->getPrice());
     array_push($_SESSION["orderquantity"], $orderItem->getQuantity());
 }
 //if this is the first item to add to orderitem session array
 if (isset($_POST["btn-add-item"]) && !isset($_SESSION["orderid"])) {
     //create new order
     $user = new User($_SESSION["username"], $_SESSION["password"]);
     //add orderid to session var
     $_SESSION["orderid"] = $user->createNewOrder($_SESSION["storeselected"]);
     //create order item and add to order
     $orderItem = new OrderItem($_SESSION["itemselected"], $_SESSION["quantity"], $_SESSION["price"]);
     $_SESSION["orderitemsel"] = array();
     $_SESSION["orderprice"] = array();
     $_SESSION["orderquantity"] = array();
     array_push($_SESSION["orderitemsel"], $orderItem->getItemName());
     array_push($_SESSION["orderprice"], $orderItem->getPrice());
     array_push($_SESSION["orderquantity"], $orderItem->getQuantity());
 }
 //remove item from order item array
 if (isset($_POST["btn-rmv-item"]) && isset($_POST["sel-cart"])) {
     foreach ($_POST["sel-cart"] as $val) {
         unset($_SESSION["orderitemsel"][$val]);
         $_SESSION["orderitemsel"] = array_values($_SESSION["orderitemsel"]);
         unset($_SESSION["orderprice"][$val]);
         $_SESSION["orderprice"] = array_values($_SESSION["orderprice"]);
         unset($_SESSION["orderquantity"][$val]);
         $_SESSION["orderquantity"] = array_values($_SESSION["orderquantity"]);
     }
 }
 //add to order