Documentation & API reference
Constants
Primary tabs
| Name |
Location |
Description | Direct uses | Strings |
|---|---|---|---|---|
| DRUPAL_AUTHENTICATED_RID |
drupal/ |
Role ID for authenticated users; should match what's in the "role" table. | 25 | |
| DRUPAL_KILOBYTE |
drupal/ |
The number of bytes in a kilobyte. | 3 | |
| LANGUAGE_SYSTEM |
drupal/ |
Special system language code (only applicable to UI language). | 4 | |
| LANGUAGE_NOT_SPECIFIED |
drupal/ |
The language code used when no language is explicitly assigned (yet). | 187 | |
| LANGUAGE_NOT_APPLICABLE |
drupal/ |
The language code used when the marked object has no linguistic content. | 2 | |
| LANGUAGE_MULTIPLE |
drupal/ |
The language code used when multiple languages could be applied. | 2 | |
| LANGUAGE_DEFAULT |
drupal/ |
Language code referring to the default language of data, e.g. of an entity. | 6 | |
| LANGUAGE_CONFIGURABLE |
drupal/ |
The language state when referring to configurable languages. | 7 | |
| LANGUAGE_LOCKED |
drupal/ |
The language state when referring to locked languages. | 7 | |
| LANGUAGE_ALL |
drupal/ |
The language state used when referring to all languages. | 22 | |
| LANGUAGE_SITE_DEFAULT |
drupal/ |
The language state used when referring to the site's default language. | 2 | |
| LANGUAGE_TYPE_CONTENT |
drupal/ |
The type of language used to define the content language. | 12 | |
| LANGUAGE_TYPE_INTERFACE |
drupal/ |
The type of language used to select the user interface. | 55 | |
| LANGUAGE_TYPE_URL |
drupal/ |
The type of language used for URLs. | 4 | |
| LANGUAGE_LTR |
drupal/ |
Language written left to right. Possible value of $language->direction. | 3 | |
| LANGUAGE_RTL |
drupal/ |
Language written right to left. Possible value of $language->direction. | 5 | |
| UNICODE_ERROR |
drupal/ |
Indicates an error during check for PHP unicode support. | 1 | |
| UNICODE_SINGLEBYTE |
drupal/ |
Indicates that standard PHP (emulated) unicode support is being used. | 3 | |
| UNICODE_MULTIBYTE |
drupal/ |
Indicates that full unicode support with the PHP mbstring extension is being used. | 7 | |
| REQUEST_TIME |
drupal/ |
Time of the current request in seconds elapsed since the Unix Epoch. | 130 | 1 |
| CHECK_PLAIN |
drupal/ |
Flag for drupal_set_title(); text is not sanitized, so run check_plain(). | 1 | |
| PASS_THROUGH |
drupal/ |
Flag for drupal_set_title(); text has already been sanitized. | 36 | |
| DRUPAL_PHP_FUNCTION_PATTERN |
drupal/ |
Regular expression to match PHP function names. | 10 | |
| CONFIG_ACTIVE_DIRECTORY |
drupal/ |
$config_directories key for active directory. | 5 | |
| CONFIG_STAGING_DIRECTORY |
drupal/ |
$config_directories key for staging directory. | 4 | |
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 136 | 7 |
| MAINTENANCE_MODE |
drupal/ |
Global flag to identify update.php and authorize.php runs. | 7 | 17 |