woocommerce_order_refunded │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_order_refunded', 'wp_kama_woocommerce_order_refunded_action', 10, 2 );

/**
 * Function for `woocommerce_order_refunded` action-hook.
 * 
 * @param  $order_id  
 * @param  $refund_id 
 *
 * @return void
 */
function wp_kama_woocommerce_order_refunded_action( $order_id, $refund_id ){

	// action...
}

$order_id

-

$refund_id

-

Where the hook is called

do_action( 'woocommerce_order_refunded', $order->get_id(), $refund->get_id() );

Where the hook is used in WooCommerce