$variables Vs. $vars

Question

What is the difference between

function mythemes_preprocess_node(&$variables) { ... }

and

function mythemes_preprocess_node(&$vars) { ... }

in drupal 7. and what is the difference between preprocess and process functions. thanks.

Answer 1

There are no differences. The name of the argument variable is up to the function writer. You can call it $foobar, if you like :)