How to access product attributes from php (woocommerce)?

Question

Web development

There is a form:

How to create a product attribute (economy class or business) so that when you add it to the form above, products with this attribute are displayed.

Answer 1

Since in the standard form the attributes are written as a serialized array in the database, I recommend saving the attributes in simple custom fields when saving the product (the "Update" button in the admin panel). Then we search for custom fields www.onwordpress.ru/search-custom-fields-wordpress.html