Is hooks the same as theme functions drupal and what triggers what? [closed]

Question

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.

Closed 8 years ago.

I pretty much understand Drupal API hooks so no need to explain about that. I am interesting in theme hooks and theme functions.

It is impossible to get the full picture hope you can?

Answer 1

The more and more I read theme functions are pretty much functions that are triggered by Drupal by the hook implementation. theme functions has following naming convention:

mytheme_theme hook name; theme functions should not be called directly but has to be invorked by the theme() a specific function with two parameters 'hookname' and $vars either string or an Array.

If you have a preprocess function - lets call it mytheme_preprocess_theme hook name

It will be called before mytheme_theme hook name - behind the scene all preprocess functions are called before theme functions.

If verified by a developer @ Drupal's support forum.