Hi,
I’m trying to make a custom reference to an order. For this, I was wondering how i can display the vendorsID for each of the Vendors that supply, for that certain order.

So, someone might have 1 order, ordering from vendorID 1 and vendorID 2. I would like to echo the vendorID for both vendors on the order details page in the backend. I already have a hook and some code like this (watch for $VENDORID HERE):

function kia_display_order_data_in_admin( $order ){  ?>
    <div class="order_data_column">
        <h4><?php _e( 'Reference(s)', 'woocommerce' ); ?></h4>
        <?php 
    global $post;    
	$customer_user = get_post_meta( $post->ID, '_customer_user', true );
$customer_orders = get_posts( array(
    'numberposts' => -1,
    'meta_key'    => '_customer_user',
    'meta_value'  => $customer_user,
    'post_type'   => wc_get_order_types(),
    'post_status' => array_keys( wc_get_order_statuses() ),
) );
	
$order = new WC_Order( $post->ID );
$items = $order->get_items();

	foreach ( $items as $item ) {
    $product_name = $item['name'];
    $product_id = $item['product_id'];
    $product_variation_id = $item['variation_id'];
echo $product_id.'.'.$customer_user.'.'.count( $customer_orders ).$VENDORID HERE.'.#'.$post->ID.'<br>'; 
}

Thanks!