woocommerce_product_on_backorder │ action-hook │ WC 3.0

Action fires when an item in an order is backordered.

Usage

add_action( 'woocommerce_product_on_backorder', 'wp_kama_woocommerce_product_on_backorder_action' );

/**
 * Function for `woocommerce_product_on_backorder` action-hook.
 * 
 * @param array $args 
 *
 * @return void
 */
function wp_kama_woocommerce_product_on_backorder_action( $args ){

	// action...
}

$args(array)

-

• product(WC_Product)
  The product that is on backorder.

• order_id(int)
  The ID of the order.

• quantity(int|float)
  The amount of product on backorder.

Changelog

Where the hook is called

do_action(
	'woocommerce_product_on_backorder',
	array(
		'product'  => wc_get_product( $change['product']->get_id() ),
		'order_id' => $order->get_id(),
		'quantity' => abs( $change['from'] - $change['to'] ),
	)
);

Where the hook is used in WooCommerce