Documentation & API reference
Constants
Primary tabs
| Name | Location | Description |
Direct uses |
Strings |
|---|---|---|---|---|
| MENU_MAX_MENU_NAME_LENGTH_UI |
drupal/ |
Maximum length of menu name as entered by the user. Database length is 32 and we add a menu- prefix. | 3 | |
| FILE_URL_TEST_CDN_2 |
drupal/ |
3 | ||
| 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 |
| FILE_WRITABLE |
drupal/ |
File permission check -- File is writable. | 5 | |
| DRUPAL_BOOTSTRAP_VARIABLES |
drupal/ |
Fifth bootstrap phase: initialize the variable system. | 5 | |
| DRUPAL_BOOTSTRAP_CODE |
drupal/ |
Eighth bootstrap phase: load code for subsystems and modules. | 5 | |
| LANGUAGE_RTL |
drupal/ |
Language written right to left. Possible value of $language->direction. | 5 | |
| CONFIG_ACTIVE_DIRECTORY |
drupal/ |
$config_directories key for active directory. | 5 | |
| JS_DEFAULT |
drupal/ |
The default group for module JavaScript code added to the page. | 5 | |
| DRUPAL_CACHE_PER_ROLE |
drupal/ |
The block or element can change depending on the user's roles. | 5 | |
| RESPONSIVE_PRIORITY_MEDIUM |
drupal/ |
A responsive table class; hide table cell on narrow devices. | 5 | |
| REGIONS_VISIBLE |
drupal/ |
Return only visible regions. | 5 | |
| NODE_PROMOTED |
drupal/ |
Denotes that the node is promoted to the front page. | 5 | |
| USERNAME_MAX_LENGTH |
drupal/ |
Maximum length of username text field. | 5 | |
| USER_REGISTER_VISITORS |
drupal/ |
Visitors can create their own accounts. | 5 | |
| TAXONOMY_HIERARCHY_SINGLE |
drupal/ |
Denotes that one or more terms in the vocabulary has a single parent. | 5 | |
| 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_READABLE |
drupal/ |
File permission check -- File is readable. | 6 | |
| LANGUAGE_NEGOTIATION_SELECTED |
drupal/ |
No language negotiation. The default language is used. | 6 | |
| FILE_MODIFY_PERMISSIONS |
drupal/ |
Flag used by file_prepare_directory() -- file permissions may be changed. | 6 | |
| DRUPAL_BOOTSTRAP_CONFIGURATION |
drupal/ |
First bootstrap phase: initialize configuration. | 6 | |
| LANGUAGE_DEFAULT |
drupal/ |
Language code referring to the default language of data, e.g. of an entity. | 6 | |
| RESPONSIVE_PRIORITY_LOW |
drupal/ |
A responsive table class; only show table cell on wide devices. | 6 | |
| MENU_NORMAL_ITEM |
drupal/ |
Menu type -- A "normal" menu item that's shown in menu and breadcrumbs. | 6 | 1 |
| MENU_SITE_ONLINE |
drupal/ |
Internal menu status code -- Everything is working fine. | 6 | |
| NODE_NOT_PUBLISHED |
drupal/ |
Denotes that the node is not published. | 6 | |
| SHORTCUT_DEFAULT_SET_NAME |
drupal/ |
The name of the default shortcut set. | 6 |