WordPress at a glance
filter is not described

woocommerce_ajax_order_item filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_ajax_order_item', 'filter_function_name_8609', 10, 4 );
function filter_function_name_8609( $order_item, $item_id, $order, $product ){
	// filter...

	return $order_item;
}
$order_item
-
$item_id
-
$order
-
$product
-

Where the hook is called

WC_AJAX::maybe_add_order_item()
woocommerce_ajax_order_item
woocommerce/includes/class-wc-ajax.php 933
$item                    = apply_filters( 'woocommerce_ajax_order_item', $order->get_item( $item_id ), $item_id, $order, $product );

Where in WP core the hook is used WooCommerce

Usage not found.