When using hook_form_alter() and additional submit functions, can one reference a php file for...

Drupal: When using hook_form_alter() and additional submit functions, can one reference a php file for the submit callback?

Helpful? Please support me on Patreon: https://www.patreon.com/roelvandepaar

With thanks & praise to God, and with thanks to the many people who have made this project possible! | Content (except music & images) licensed under CC BY-SA https://meta.stackexchange.com/help/licensing | Music: https://www.bensound.com/licensing | Images: https://stocksnap.io/license & others | With thanks to user starsinmypockets (drupal.stackexchange.com/users/1216), user Rob (drupal.stackexchange.com/users/316), user kiamlaluno (drupal.stackexchange.com/users/199), user Berdir (drupal.stackexchange.com/users/31), and the Stack Exchange Network (drupal.stackexchange.com/questions/5592). Trademarks are property of their respective owners. Disclaimer: All information is provided "AS IS" without warranty of any kind. You are responsible for your own actions. Please contact me if anything is amiss at Roel D.OT VandePaar A.T gmail.com

drupalformshooks