Add elements to a page before it is rendered.

Use this hook when you want to add elements at the page level. For your additions to be printed, they have to be placed below a top level array key of the $page array that has the name of a region of the active theme.

By default, valid region keys are 'page_top', 'header', 'sidebar_first', 'content', 'sidebar_second' and 'page_bottom'. To get a list of all regions of the active theme, use system_region_list($theme). Note that $theme is a global variable.

If you want to alter the elements added by other modules or if your module depends on the elements of other modules, use hook_page_alter() instead which runs after this hook.

Parameters

$page: Nested array of renderable elements that make up the page.

See also

hook_page_alter()

drupal_render_page()

Related topics

File

modules/system/system.api.php, line 905

Hooks provided by Drupal core and the System module.

Code

function hook_page_build(&$page) {
  if (menu_get_object('node', 1)) {
    // We are on a node detail page. Append a standard disclaimer to the
    // content region.
    $page['content']['disclaimer'] = array(
      '#markup' => t('Acme, Inc. is not responsible for the contents of this sample code.'),
      '#weight' => 25,
    );
  }
}