Documentation & API reference
Constants
Primary tabs
| Name | Location | Description | Direct uses |
Strings |
|---|---|---|---|---|
| WATCHDOG_EMERGENCY |
drupal/ |
Log message severity -- Emergency: system is unusable. | 2 | 1 |
| WATCHDOG_ALERT |
drupal/ |
Log message severity -- Alert: action must be taken immediately. | 2 | 1 |
| WATCHDOG_CRITICAL |
drupal/ |
Log message severity -- Critical conditions. | 2 | 1 |
| WATCHDOG_ERROR |
drupal/ |
Log message severity -- Error conditions. | 27 | 1 |
| WATCHDOG_WARNING |
drupal/ |
Log message severity -- Warning conditions. | 21 | 1 |
| WATCHDOG_NOTICE |
drupal/ |
Log message severity -- Normal but significant conditions. | 30 | 1 |
| WATCHDOG_INFO |
drupal/ |
Log message severity -- Informational messages. | 9 | 1 |
| WATCHDOG_DEBUG |
drupal/ |
Log message severity -- Debug-level messages. | 3 | 1 |
| DRUPAL_BOOTSTRAP_CONFIGURATION |
drupal/ |
First bootstrap phase: initialize configuration. | 5 | 1 |
| DRUPAL_BOOTSTRAP_PAGE_CACHE |
drupal/ |
Second bootstrap phase: try to serve a cached page. | 1 | 1 |
| DRUPAL_BOOTSTRAP_DATABASE |
drupal/ |
Third bootstrap phase: initialize database layer. | 3 | 1 |
| DRUPAL_BOOTSTRAP_VARIABLES |
drupal/ |
Fourth bootstrap phase: initialize the variable system. | 5 | 1 |
| DRUPAL_BOOTSTRAP_SESSION |
drupal/ |
Fifth bootstrap phase: initialize session handling. | 4 | 1 |
| DRUPAL_BOOTSTRAP_PAGE_HEADER |
drupal/ |
Sixth bootstrap phase: set up the page header. | 1 | 1 |
| DRUPAL_BOOTSTRAP_LANGUAGE |
drupal/ |
Seventh bootstrap phase: find out language of the page. | 2 | 1 |
| DRUPAL_BOOTSTRAP_FULL |
drupal/ |
Final bootstrap phase: Drupal is fully loaded; validate and fix input data. | 14 | 1 |
| DRUPAL_ANONYMOUS_RID |
drupal/ |
Role ID for anonymous users; should match what's in the "role" table. | 33 | 1 |
| DRUPAL_AUTHENTICATED_RID |
drupal/ |
Role ID for authenticated users; should match what's in the "role" table. | 16 | 1 |
| DRUPAL_KILOBYTE |
drupal/ |
The number of bytes in a kilobyte. | 3 | 1 |
| LANGUAGE_NONE |
drupal/ |
The language code used when no language is explicitly assigned. | 156 | 1 |
| LANGUAGE_TYPE_CONTENT |
drupal/ |
The type of language used to define the content language. | 7 | 1 |
| LANGUAGE_TYPE_INTERFACE |
drupal/ |
The type of language used to select the user interface. | 14 | 1 |
| LANGUAGE_TYPE_URL |
drupal/ |
The type of language used for URLs. | 4 | 1 |
| LANGUAGE_LTR |
drupal/ |
Language written left to right. Possible value of $language->direction. | 9 | 1 |
| LANGUAGE_RTL |
drupal/ |
Language written right to left. Possible value of $language->direction. | 6 | 1 |
| REQUEST_TIME |
drupal/ |
Time of the current request in seconds elapsed since the Unix Epoch. | 103 | 1 |
| CHECK_PLAIN |
drupal/ |
Flag used to indicate that text is not sanitized, so run check_plain(). | 1 | 1 |
| PASS_THROUGH |
drupal/ |
Flag used to indicate that text has already been sanitized. | 35 | 1 |
| REGISTRY_RESET_LOOKUP_CACHE |
drupal/ |
Signals that the registry lookup cache should be reset. | 2 | 1 |
| REGISTRY_WRITE_LOOKUP_CACHE |
drupal/ |
Signals that the registry lookup cache should be written to storage. | 2 | 1 |
| DRUPAL_PHP_FUNCTION_PATTERN |
drupal/ |
Regular expression to match PHP function names. | 7 | 1 |
| STREAM_WRAPPERS_ALL |
drupal/ |
Stream wrapper bit flag -- a filter that matches all wrappers. | 1 | |
| STREAM_WRAPPERS_LOCAL |
drupal/ |
Stream wrapper bit flag -- refers to a local file system location. | 3 | 1 |
| STREAM_WRAPPERS_READ |
drupal/ |
Stream wrapper bit flag -- wrapper is readable (almost always true). | 1 | 1 |
| STREAM_WRAPPERS_WRITE |
drupal/ |
Stream wrapper bit flag -- wrapper is writeable. | 1 | 1 |
| STREAM_WRAPPERS_VISIBLE |
drupal/ |
Stream wrapper bit flag -- exposed in the UI and potentially web accessible. | 1 | 1 |
| STREAM_WRAPPERS_HIDDEN |
drupal/ |
Stream wrapper type flag -- not visible in the UI or accessible via web, but readable and writable. E.g. the temporary directory for uploads. | 1 | 1 |
| STREAM_WRAPPERS_LOCAL_HIDDEN |
drupal/ |
Stream wrapper type flag -- hidden, readable and writeable using local files. | 2 | 1 |
| STREAM_WRAPPERS_WRITE_VISIBLE |
drupal/ |
Stream wrapper type flag -- visible, readable and writeable. | 6 | 1 |
| STREAM_WRAPPERS_READ_VISIBLE |
drupal/ |
Stream wrapper type flag -- visible and read-only. | 1 | 1 |
| STREAM_WRAPPERS_NORMAL |
drupal/ |
Stream wrapper type flag -- the default when 'type' is omitted from hook_stream_wrappers(). This does not include STREAM_WRAPPERS_LOCAL, because PHP grants a greater trust level to local files (for example, they can be used in an… | 2 | 1 |
| STREAM_WRAPPERS_LOCAL_NORMAL |
drupal/ |
Stream wrapper type flag -- visible, readable and writeable using local files. | 2 | 1 |
| UPDATE_DEFAULT_URL |
drupal/ |
URL to check for updates, if a given project doesn't define its own. | 1 | 1 |
| UPDATE_NOT_SECURE |
drupal/ |
Project is missing security update(s). | 8 | 1 |
| UPDATE_REVOKED |
drupal/ |
Current release has been unpublished and is no longer available. | 6 | 1 |
| UPDATE_NOT_SUPPORTED |
drupal/ |
Current release is no longer supported by the project maintainer. | 6 | 1 |
| UPDATE_NOT_CURRENT |
drupal/ |
Project has a new release available, but it is not a security release. | 7 | 1 |
| UPDATE_CURRENT |
drupal/ |
Project is up to date. | 5 | 1 |
| UPDATE_NOT_CHECKED |
drupal/ |
Project's status cannot be checked. | 6 | 1 |
| UPDATE_UNKNOWN |
drupal/ |
No available update data was found for project. | 7 | 1 |