Documentation & API reference
Constants
Primary tabs
| Name | Location | Description |
Direct uses |
Strings |
|---|---|---|---|---|
| TAXONOMY_HIERARCHY_MULTIPLE |
drupal/ |
Denotes that one or more terms in the vocabulary have multiple parents. | 5 | |
| LOCALE_CUSTOMIZED |
drupal/ |
Flag for locally customized interface translation. | 5 | |
| UPDATE_CURRENT |
drupal/ |
Project is up to date. | 5 | |
| UPDATE_NOT_FETCHED |
drupal/ |
There was a failure fetching available update data for this project. | 5 | |
| UPDATE_FETCH_PENDING |
drupal/ |
We need to (re)fetch available update data for this project. | 5 | |
| FILTER_TYPE_HTML_RESTRICTOR |
drupal/ |
HTML tag and attribute restricting filters. | 5 | |
| COMMENT_FORM_SEPARATE_PAGE |
drupal/ |
Comment form should be displayed on a separate page. | 5 | |
| FILE_EXIST |
drupal/ |
File permission check -- File exists. | 4 | |
| FILE_NOT_WRITABLE |
drupal/ |
File permission check -- File is not writable. | 4 | |
| STREAM_WRAPPERS_WRITE_VISIBLE |
drupal/ |
Stream wrapper type flag -- visible, readable and writeable. | 4 | 1 |
| DRUPAL_MINIMUM_PHP |
drupal/ |
Minimum supported version of PHP. | 4 | |
| DRUPAL_BOOTSTRAP_SESSION |
drupal/ |
Sixth bootstrap phase: initialize session handling. | 4 | |
| LANGUAGE_SYSTEM |
drupal/ |
Special system language code (only applicable to UI language). | 4 | |
| LANGUAGE_TYPE_URL |
drupal/ |
The type of language used for URLs. | 4 | |
| CONFIG_STAGING_DIRECTORY |
drupal/ |
$config_directories key for staging directory. | 4 | |
| JS_LIBRARY |
drupal/ |
The default group for JavaScript and jQuery libraries added to the page. | 4 | |
| MARK_NEW |
drupal/ |
Mark content as being new. | 4 | |
| MENU_LINKS_TO_PARENT |
drupal/ |
Internal menu flag -- menu item links back to its parent. | 4 | |
| MENU_MAX_PARTS |
drupal/ |
The maximum number of path elements for a menu callback | 4 | |
| FIELD_STORAGE_UPDATE |
drupal/ |
Argument for an update operation. | 4 | |
| NODE_NOT_PROMOTED |
drupal/ |
Denotes that the node is not promoted to the front page. | 4 | |
| NODE_NOT_STICKY |
drupal/ |
Denotes that the node is not sticky at the top of the page. | 4 | |
| NODE_ACCESS_IGNORE |
drupal/ |
Denotes that access is unaffected for a node. | 4 | |
| FILTER_TYPE_MARKUP_LANGUAGE |
drupal/ |
Non-HTML markup language filters that generate HTML. | 4 | |
| USE_ASSERTS |
drupal/ |
@file A PHP diff engine for phpwiki. (Taken from phpwiki-1.3.3) | 4 | 1 |
| INSTALL_TASK_SKIP |
drupal/ |
Do not run the task during the current installation request. | 3 | |
| INSTALL_TASK_RUN_IF_NOT_COMPLETED |
drupal/ |
Run the task on each installation request until the database is set up. | 3 | |
| FILE_EXECUTABLE |
drupal/ |
File permission check -- File is executable. | 3 | |
| FILE_NOT_READABLE |
drupal/ |
File permission check -- File is not readable. | 3 | |
| FILE_NOT_EXECUTABLE |
drupal/ |
File permission check -- File is not executable. | 3 | |
| PREG_CLASS_UNICODE_WORD_BOUNDARY |
drupal/ |
Matches Unicode characters that are word boundaries. | 3 | 1 |
| STREAM_WRAPPERS_LOCAL_NORMAL |
drupal/ |
Stream wrapper type flag -- visible, readable and writeable using local files. | 3 | 1 |
| WATCHDOG_DEBUG |
drupal/ |
Log message severity -- Debug-level messages. | 3 | |
| DRUPAL_BOOTSTRAP_DATABASE |
drupal/ |
Fourth bootstrap phase: initialize database layer. | 3 | |
| DRUPAL_KILOBYTE |
drupal/ |
The number of bytes in a kilobyte. | 3 | |
| LANGUAGE_LTR |
drupal/ |
Language written left to right. Possible value of $language->direction. | 3 | |
| UNICODE_SINGLEBYTE |
drupal/ |
Indicates that standard PHP (emulated) unicode support is being used. | 3 | |
| DRUPAL_CACHE_PER_PAGE |
drupal/ |
The block or element can change depending on the page being viewed. | 3 | |
| MAIL_LINE_ENDINGS |
drupal/ |
Auto-detect appropriate line endings for e-mails. | 3 | 1 |
| MARK_READ |
drupal/ |
Mark content as read. | 3 | |
| MARK_UPDATED |
drupal/ |
Mark content as being updated. | 3 | |
| MENU_VISIBLE_IN_TREE |
drupal/ |
Internal menu flag -- menu item is visible in the menu tree. | 3 | |
| MENU_IS_LOCAL_TASK |
drupal/ |
Internal menu flag -- menu item is a local task. | 3 | |
| MENU_NOT_FOUND |
drupal/ |
Internal menu status code -- Menu item was not found. | 3 | |
| OPENID_NS_2_0 |
drupal/ |
OpenID Authentication 2.0 namespace URL. | 3 | |
| OPENID_NS_SREG |
drupal/ |
OpenID Simple Registration extension. | 3 | |
| AGGREGATOR_CLEAR_NEVER |
drupal/ |
Denotes that a feed's items should never expire. | 3 | |
| FIELD_BEHAVIOR_DEFAULT |
drupal/ |
Value for field API concerning widget default and multiple value settings. | 3 | |
| FIELD_LOAD_REVISION |
drupal/ |
Load the version of an entity's field data specified in the entity. | 3 | 1 |
| NODE_STICKY |
drupal/ |
Denotes that the node is sticky at the top of the page. | 3 |