Untitled

<?php
// Function to return the JavaScript representation of a TransactionData object.
function getTransactionJs($transId,$subtotal,$shipping,$tax) {
  return <<<HTML

              'transaction_id': '{$transId}',
              'affiliation': 'Model1',
              'value': '{$subtotal}',
               'currency': 'PLN',
              'tax': '{$tax}'
              'shipping': '{$shipping}',
HTML;
}

// Function to return the JavaScript representation of an ItemData object.
function getItemJs($transId, $items) {
  return <<<HTML
  {
  'id': '{$items->getItemId()}',
  'name': '{$items['name']}',
  'sku': '{$items['sku']}',
  'category': '{$items['category']}',
  'quantity': '{$items->getQtyOrdered()}'
  'price': '{$items->getPriceInclTax()}',
   },
HTML;
}
?>

<!-- Begin HTML -->
<script type="text/javascript">
gtag('event', 'purchase', {
        <?php
        echo getTransactionJs($block->getOrderId(),round($order->getGrandTotal(),2)-round($order->getShippingAmount(),2),round($order->getShippingAmount(),2), round($order->getGrandTotal(),2)-round($order->getSubTotal(),2));
        ?>
      "items": [
        <?php
        foreach ($orderItems as $item) {
          echo getItemJs($block->getOrderId(), $item);
        }
        ?>
        ]

    });

</script>