woocommerce_ajax_order_items_added │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_ajax_order_items_added', 'wp_kama_woocommerce_ajax_order_items_added_action', 10, 2 );

/**
 * Function for `woocommerce_ajax_order_items_added` action-hook.
 * 
 * @param  $added_items 
 * @param  $order       
 *
 * @return void
 */
function wp_kama_woocommerce_ajax_order_items_added_action( $added_items, $order ){

	// action...
}

$added_items

-

$order

-

Where the hook is called

do_action( 'woocommerce_ajax_order_items_added', $added_items, $order );

Where the hook is used in WooCommerce