How to use WooCommerce functions in your file?

Question

WordPress

Created a handler.php file in one of the plugins, wrote there
print_r(WC());
Doesn't work.
I generally need to apply the set_quantity action in it, how to do this?

global $woocommerce tried.

Answer 1

Here, there is an answer to your question - https://stackoverflow.com/questions/47973325/use-w...
https://stackoverflow.com/questions/15304926/how-t...