function hook_init

Perform setup tasks for non-cached page requests.

This hook is run at the beginning of the page request. It is typically used to set up global parameters that are needed later in the request. When this hook is called, the theme and all modules are already loaded in memory.

This hook is not run on cached pages.

To add CSS or JS files that should be present on all pages, modules should not implement this hook, but declare these files in their .info file.

See also

hook_boot()

Related topics

File

modules/system/system.api.php, line 1896

Code

function hook_init() {
    // Since this file should only be loaded on the front page, it cannot be
    // declared in the info file.
    if (drupal_is_front_page()) {
        drupal_add_css(drupal_get_path('module', 'foo') . '/foo.css');
    }
}