1/**
2 * Get All orders IDs for a given product ID.
3 *
4 * @param integer $product_id (required)
5 * @param array $order_status (optional) Default is 'wc-completed'
6 *
7 * @return array
8 */
9function get_orders_ids_by_product_id( $product_id, $order_status = array( 'wc-completed' ) ){
10 global $wpdb;
11
12 $results = $wpdb->get_col("
13 SELECT order_items.order_id
14 FROM {$wpdb->prefix}woocommerce_order_items as order_items
15 LEFT JOIN {$wpdb->prefix}woocommerce_order_itemmeta as order_item_meta ON order_items.order_item_id = order_item_meta.order_item_id
16 LEFT JOIN {$wpdb->posts} AS posts ON order_items.order_id = posts.ID
17 WHERE posts.post_type = 'shop_order'
18 AND posts.post_status IN ( '" . implode( "','", $order_status ) . "' )
19 AND order_items.order_item_type = 'line_item'
20 AND order_item_meta.meta_key = '_product_id'
21 AND order_item_meta.meta_value = '$product_id'
22 ");
23
24 return $results;
25}
26