Documentation & API reference
Constants
Primary tabs
| Name | Location | Description | Direct uses |
Strings |
|---|---|---|---|---|
| DRUPAL_CACHE_GLOBAL |
drupal/ |
The block or element is the same for every user and page that it is visible. | 1 | |
| LOCALE_PLURAL_DELIMITER |
drupal/ |
The delimiter used to split plural strings. | 8 | |
| MENU_IS_ROOT |
drupal/ |
Internal menu flag -- menu item is the root of the menu tree. | ||
| MENU_VISIBLE_IN_TREE |
drupal/ |
Internal menu flag -- menu item is visible in the menu tree. | 4 | |
| MENU_VISIBLE_IN_BREADCRUMB |
drupal/ |
Internal menu flag -- menu item is visible in the breadcrumb. | 9 | |
| MENU_LINKS_TO_PARENT |
drupal/ |
Internal menu flag -- menu item links back to its parent. | 4 | |
| MENU_MODIFIED_BY_ADMIN |
drupal/ |
Internal menu flag -- menu item can be modified by administrator. | ||
| MENU_CREATED_BY_ADMIN |
drupal/ |
Internal menu flag -- menu item was created by administrator. | ||
| MENU_IS_LOCAL_TASK |
drupal/ |
Internal menu flag -- menu item is a local task. | 3 | |
| MENU_IS_LOCAL_ACTION |
drupal/ |
Internal menu flag -- menu item is a local action. | 1 | |
| MENU_CALLBACK |
drupal/ |
Menu type -- A hidden, internal callback, typically used for API calls. | 35 | |
| MENU_CONTEXT_NONE |
drupal/ |
Internal menu flag: Invisible local task. | 2 | |
| MENU_CONTEXT_PAGE |
drupal/ |
Internal menu flag: Local task should be displayed in page context. | 9 | |
| MENU_CONTEXT_INLINE |
drupal/ |
Internal menu flag: Local task should be displayed inline. | 11 | |
| MENU_NOT_FOUND |
drupal/ |
Internal menu status code -- Menu item was not found. | 2 | |
| MENU_ACCESS_DENIED |
drupal/ |
Internal menu status code -- Menu item access is denied. | 1 | |
| MENU_SITE_OFFLINE |
drupal/ |
Internal menu status code -- Menu item inaccessible because site is offline. | 4 | |
| MENU_SITE_ONLINE |
drupal/ |
Internal menu status code -- Everything is working fine. | 4 | |
| MENU_MAX_PARTS |
drupal/ |
The maximum number of path elements for a menu callback | 4 | |
| MENU_MAX_DEPTH |
drupal/ |
The maximum depth of a menu links tree - matches the number of p columns. | 18 | |
| MENU_PREFERRED_LINK |
drupal/ |
Reserved key to identify the most specific menu link for a given path. | 1 | |
| INSTALL_TASK_SKIP |
drupal/ |
Do not run the task during the current installation request. | 3 | |
| INSTALL_TASK_RUN_IF_REACHED |
drupal/ |
Run the task on each installation request that reaches it. | 2 | |
| INSTALL_TASK_RUN_IF_NOT_COMPLETED |
drupal/ |
Run the task on each installation request until the database is set up. | 3 | |
| DRUPAL_MINIMUM_PHP |
drupal/ |
Minimum supported version of PHP. | 5 | |
| DRUPAL_MINIMUM_PHP_MEMORY_LIMIT |
drupal/ |
Minimum recommended value of PHP memory_limit. | 1 | |
| ERROR_REPORTING_HIDE |
drupal/ |
Error reporting level: display no errors. | ||
| ERROR_REPORTING_DISPLAY_SOME |
drupal/ |
Error reporting level: display errors and warnings. | 1 | |
| ERROR_REPORTING_DISPLAY_ALL |
drupal/ |
Error reporting level: display all messages. | 2 | |
| ERROR_REPORTING_DISPLAY_VERBOSE |
drupal/ |
Error reporting level: display all messages, plus backtrace information. | 2 | |
| WATCHDOG_EMERGENCY |
drupal/ |
Log message severity -- Emergency: system is unusable. | 1 | |
| WATCHDOG_ALERT |
drupal/ |
Log message severity -- Alert: action must be taken immediately. | 1 | |
| WATCHDOG_CRITICAL |
drupal/ |
Log message severity -- Critical conditions. | ||
| WATCHDOG_ERROR |
drupal/ |
Log message severity -- Error conditions. | 25 | |
| WATCHDOG_WARNING |
drupal/ |
Log message severity -- Warning conditions. | 18 | |
| WATCHDOG_NOTICE |
drupal/ |
Log message severity -- Normal but significant conditions. | 34 | |
| WATCHDOG_INFO |
drupal/ |
Log message severity -- Informational messages. | 6 | |
| WATCHDOG_DEBUG |
drupal/ |
Log message severity -- Debug-level messages. | 2 | |
| DRUPAL_BOOTSTRAP_CONFIGURATION |
drupal/ |
First bootstrap phase: initialize configuration. | 4 | |
| DRUPAL_BOOTSTRAP_KERNEL |
drupal/ |
Second bootstrap phase, initalize a kernel. | 1 | |
| DRUPAL_BOOTSTRAP_PAGE_CACHE |
drupal/ |
Third bootstrap phase: try to serve a cached page. | 1 | |
| DRUPAL_BOOTSTRAP_DATABASE |
drupal/ |
Fourth bootstrap phase: initialize database layer. | 3 | |
| DRUPAL_BOOTSTRAP_VARIABLES |
drupal/ |
Fifth bootstrap phase: initialize the variable system. | 4 | |
| DRUPAL_BOOTSTRAP_SESSION |
drupal/ |
Sixth bootstrap phase: initialize session handling. | 3 | |
| DRUPAL_BOOTSTRAP_CODE |
drupal/ |
Eighth bootstrap phase: load code for subsystems and modules. | 3 | |
| DRUPAL_BOOTSTRAP_FULL |
drupal/ |
Final bootstrap phase: initialize language, path, theme, and modules. | 7 | |
| DRUPAL_ANONYMOUS_RID |
drupal/ |
Role ID for anonymous users; should match what's in the "role" table. | 46 | |
| DRUPAL_AUTHENTICATED_RID |
drupal/ |
Role ID for authenticated users; should match what's in the "role" table. | 34 | |
| DRUPAL_KILOBYTE |
drupal/ |
The number of bytes in a kilobyte. | 3 | |
| CHECK_PLAIN |
drupal/ |
Flag for drupal_set_title(); text is not sanitized, so run check_plain(). | 1 |