Attach different CSS styles on a node basing on publishing date or other PHP properties

Question

I want to attach a different CSS style to a node, basing on the node publishing date or some PHP properties.
What would be the best way to do this?

Answer 1

You are asking the wrong question. The question you should have asked is "how do I add a class on a node depending on some properties?". Using different set of CSS files to control styling a an element is just a no-no.

The answer to the correct question depends on whether you are targeting Drupal 6 or Drupal 7:

• On Drupal 6, you will generally have to implement the logic your own node template;
• On Drupal 7 (or on Drupal 6 if you are using an intelligent base theme like Zen), you would implement a hook_preprocess_node() in your theme and add classes to the 'classes_array' variable

Answer 2

Create a module, then in the

hook_init()

do your php calculations and include css with

drupal_add_css()

and js with

drupal_add_js().