问在Woocommerce跟踪标记脚本中输出采购订单项目数据

EN

    <!--Onefeed Tracking -->

<?php
$order = new WC_Order( $order_id );
$items = $order->get_items();
foreach ( $items as $item ) {
    $product_id = $item['product_id'];
}
$items_ordered = implode(',', $items);
?>

<script type="text/javascript" language="javascript">
     var of_ssid = 'xxxx';
     var cs = '<?php echo $order->get_total(); ?>';
     var oi = '<?php echo $order->get_order_number(); ?>';
     var it = '<?php echo $order->get_item_count(); ?>';
     var pr = '<?php echo $items_ordered(); ?>';
     var nc = '';
</script>

<script type="text/javascript" language="javascript" src="https://tracking.onefeed.co.uk/t.js"></script>
<noscript>
    <img border="0" src="https://tracking.onefeed.co.uk/ProcessProductCheckout.ashx?of_ssid=xxxx&cs=<?php echo $order->get_total(); ?>&it=<?php echo $order->get_item_count() ?>&oi=<?php echo $order->get_order_number(); ?>&nc=&pr =<?php echo $items_ordered(); ?>" />
</noscript>
<!--End Onefeed Tracking -->