WordPress at a glance
function is not described

woocommerce_add_order_item() WC 1.0

Deprecated from version 3.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

No Hooks.

Return

null. Nothing.

Usage

woocommerce_add_order_item( $order_id, $item );
$order_id (required)
-
$item (required)
-

Changelog

Deprecated 3.0

Code of woocommerce_add_order_item() WC 5.3.0

<?php
function woocommerce_add_order_item( $order_id, $item ) {
	wc_deprecated_function( __FUNCTION__, '3.0', 'wc_add_order_item' );
	return wc_add_order_item( $order_id, $item );
}