How to get vendor id from order id?

Replies: 0

Hi,
I am trying to get the vendor id from an order id.
What I was doing to get it mentioned below.

$order = wc_get_order(5537);
$product_id   = $item_data['product_id'];
$post_obj    = get_post( $product_id );
$vendor_id = $post_obj->post_author;
echo $vendor_id;

It’s print out 1 not actual vendor id.

How to get actual vendor id?

Thanks
Shamir