gistfile1.php

<?php

    Database::beginTransaction();
    if ($order = Order::create($data)) {
      $items = $cart->getItems();
      $orderLines = array();
      foreach ($items as $item) {
        $data = array(
          'number' => $item->article->number,
          'number_supplier' => $item->article->number_supplier,
          'text' => $item->article->name,
          'quantity_ordered' => ( $item->quantity * $item->article->quantity_multiplier ),
          'price_in' => $item->article->price_in,
          'price_out' => $item->article->price(false, false, false),
          'order_id' => $order->id,
          'supplier_id' => $item->article->supplier_id,
        );
        if (!$orderLine = OrderLine::create($data)) {
          Database::rollbackTransaction();
          throw new \Exception('Could not create order line');
        }
        $orderLines[$orderLine->id] = $orderLine;
      }
    } else {
      Database::rollbackTransaction();
      throw new \Exception('Could not create order');
    }
    if (Database::commitTransaction()) {
      $cart->clear();
    }