Documentation & API reference
Constants
Primary tabs
| Name | Location | Description |
Direct uses |
Strings |
|---|---|---|---|---|
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Root directory of Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Root directory of Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Root directory of Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
162 | 9 | |
| DRUPAL_ROOT |
drupal/ |
162 | 9 | |
| DRUPAL_ROOT |
drupal/ |
Root directory of Drupal installation. | 162 | 9 |
| LANGUAGE_NONE |
drupal/ |
The language code used when no language is explicitly assigned. | 156 | 1 |
| REQUEST_TIME |
drupal/ |
Time of the current request in seconds elapsed since the Unix Epoch. | 103 | 1 |
| MENU_CALLBACK |
drupal/ |
Menu type -- A hidden, internal callback, typically used for API calls. | 36 | 1 |
| PASS_THROUGH |
drupal/ |
Flag used to indicate that text has already been sanitized. | 35 | 1 |
| DRUPAL_ANONYMOUS_RID |
drupal/ |
Role ID for anonymous users; should match what's in the "role" table. | 33 | 1 |
| WATCHDOG_NOTICE |
drupal/ |
Log message severity -- Normal but significant conditions. | 30 | 1 |
| FIELD_CARDINALITY_UNLIMITED |
drupal/ |
Value for field API indicating a field accepts an unlimited number of values. | 28 | 1 |
| WATCHDOG_ERROR |
drupal/ |
Log message severity -- Error conditions. | 27 | 1 |
| MENU_LOCAL_TASK |
drupal/ |
Menu type -- A task specific to the parent item, usually rendered as a tab. | 25 | 1 |
| FILE_CREATE_DIRECTORY |
drupal/ |
Flag used by file_prepare_directory() -- create directory if not present. | 22 | 1 |
| FILE_EXISTS_REPLACE |
drupal/ |
Flag for dealing with existing files: Replace the existing file. | 22 | 1 |
| FILE_STATUS_PERMANENT |
drupal/ |
Indicates that the file is permanent and should not be deleted. | 22 | 1 |
| MENU_DEFAULT_LOCAL_TASK |
drupal/ |
Menu type -- The "default" local task, which is initially active. | 22 | 1 |
| REQUIREMENT_ERROR |
drupal/ |
Requirement severity -- Error condition; abort installation. | 21 | 1 |
| WATCHDOG_WARNING |
drupal/ |
Log message severity -- Warning conditions. | 21 | 1 |
| FILE_EXISTS_RENAME |
drupal/ |
Flag for dealing with existing files: Appends number until name is unique. | 19 | 1 |
| COMMENT_PUBLISHED |
drupal/ |
Comment is published. | 19 | 1 |
| MENU_ACCESS_DENIED |
drupal/ |
Menu status code -- Access denied. | 18 | 1 |
| USER_REGISTER_VISITORS |
drupal/ |
Visitors can create their own accounts. | 17 | 1 |
| COMMENT_MODE_THREADED |
drupal/ |
Comments are displayed as a threaded list - expanded. | 17 | 1 |
| MENU_LOCAL_ACTION |
drupal/ |
Menu type -- An action specific to the parent, usually rendered as a link. | 16 | 1 |
| MENU_MAX_DEPTH |
drupal/ |
The maximum depth of a menu links tree - matches the number of p columns. | 16 | 1 |
| DRUPAL_AUTHENTICATED_RID |
drupal/ |
Role ID for authenticated users; should match what's in the "role" table. | 16 | 1 |
| DRUPAL_NO_CACHE |
drupal/ |
The block should not get cached. | 15 | 1 |
| MENU_NOT_FOUND |
drupal/ |
Menu status code -- Not found. | 15 | 1 |
| DRUPAL_BOOTSTRAP_FULL |
drupal/ |
Final bootstrap phase: Drupal is fully loaded; validate and fix input data. | 14 | 1 |
| LANGUAGE_TYPE_INTERFACE |
drupal/ |
The type of language used to select the user interface. | 14 | 1 |
| REQUIREMENT_WARNING |
drupal/ |
Requirement severity -- Warning condition; proceed but flag warning. | 13 | 1 |
| FIELD_LOAD_CURRENT |
drupal/ |
Age argument for loading the most recent version of an entity's field data with field_attach_load(). | 13 | 1 |
| DRUPAL_OPTIONAL |
drupal/ |
Optional option on forms and settings | 13 | 1 |
| COMMENT_NOT_PUBLISHED |
drupal/ |
Comment is awaiting approval. | 13 | 1 |
| COMMENT_NODE_OPEN |
drupal/ |
Comments for this node are open. | 13 | 1 |
| FILE_EXISTS_ERROR |
drupal/ |
Flag for dealing with existing files: Do nothing and return FALSE. | 12 | 1 |
| SAVED_NEW |
drupal/ |
Return status for saving which involved creating a new item. | 12 | 1 |
| SAVED_UPDATED |
drupal/ |
Return status for saving which involved an update to an existing item. | 12 | 1 |
| USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL |
drupal/ |
Visitors can create accounts, but they don't become active without administrative approval. | 12 | 1 |
| MENU_SUGGESTED_ITEM |
drupal/ |
Menu type -- A normal menu item, hidden until enabled by an administrator. | 11 | 1 |
| DRUPAL_CORE_COMPATIBILITY |
drupal/ |
Core API compatibility. | 11 | 1 |
| DRUPAL_DISABLED |
drupal/ |
Disabled option on forms and settings | 11 | 1 |
| MAINTENANCE_MODE |
drupal/ |
Global flag to identify update.php and authorize.php runs. | 10 | 20 |
| MAINTENANCE_MODE |
drupal/ |
Global flag to indicate the site is in installation mode. | 10 | 20 |