WooCommerce: Check if Product ID is in the Order

Once a customer places an order, you might want to know if such order contains a given product ID. you can use this for tracking purposes, redirect to a custom thank you page or run your custom functions.

Either way, checking this is quite simple thanks to the “woocommerce_thankyou” hook which runs on the order received page. Enjoy!

PHP Snippet: Check if Order Contains Product ID

/**
 * @snippet       WooCommerce: Check if Product ID is in the Order
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 3.8
 * @donate $9     https://businessbloomer.com/bloomer-armada/
 */
   
add_action( 'woocommerce_thankyou', 'bbloomer_check_order_product_id' );
  
function bbloomer_check_order_product_id( $order_id ){
$order = wc_get_order( $order_id );
$items = $order->get_items(); 
foreach ( $items as $item_id => $item ) {
   $product_id = $item->get_variation_id() ? $item->get_variation_id() : $item->get_product_id();
   if ( $product_id === XYZ ) {
       // do something
   }
}
}