DrupalAPI.de

1. drupal
   1. drupal6 core.php
   2. drupal7

Perform setup tasks. See also, hook_boot.

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

For example, this hook is a typical place for modules to add CSS or JS that should be present on every page. This hook is not run on cached pages - though CSS or JS added this way will be present on a cached page.

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Hooks

Allow modules to interact with the Drupal core.

Code

modules/system/system.api.php, line 369

<?php
function hook_init() {
  drupal_add_css(drupal_get_path('module', 'book') . '/book.css');
}
?>