| Name | Location | Description |
|---|---|---|
| check_plain | drupal/includes/bootstrap.inc | Encode special characters in a plain-text string for display as HTML. |
| conf_path | drupal/includes/bootstrap.inc | Find the appropriate configuration directory. |
| drupal_valid_http_host | drupal/includes/bootstrap.inc | Validate that $_SERVER['HTTP_HOST'] is safe. |