woocommerce_report_sales_by_category_get_products_in_category filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_report_sales_by_category_get_products_in_category', 'filter_function_name_9995', 10, 2 );
function filter_function_name_9995( $product_ids, $category_id ){
	// filter...

	return $product_ids;
}

$product_ids

-

$category_id

-

Where the hook is called

return array_unique( apply_filters( 'woocommerce_report_sales_by_category_get_products_in_category', $product_ids, $category_id ) );

Where in WP core the hook is used WooCommerce