Documentation & API reference
Constants
Primary tabs
| Name | Location | Description |
Direct uses |
Strings |
|---|---|---|---|---|
| STREAM_WRAPPERS_ALL |
drupal/ |
Stream wrapper bit flag -- a filter that matches all wrappers. | ||
| DRUPAL_MINIMUM_PHP_MEMORY_LIMIT |
drupal/ |
Minimum recommended value of PHP memory_limit. | ||
| ERROR_REPORTING_HIDE |
drupal/ |
Error reporting level: display no errors. | ||
| SAVED_DELETED |
drupal/ |
Return status for saving which deleted an existing item. | ||
| MENU_IS_ROOT |
drupal/ |
Internal menu flag -- menu item is the root of the menu tree. | ||
| 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. | ||
| OPENID_NS_OPENID |
drupal/ |
OpenID namespace used in Yadis documents. | ||
| OPENID_NS_XRD |
drupal/ |
Extensible Resource Descriptor documents. | ||
| VIEWS_API_VERSION |
drupal/ |
Views API version string. | ||
| DRUPAL_USER_TIMEZONE_DEFAULT |
drupal/ |
New users will be set to the default time zone at registration. | ||
| DRUPAL_USER_TIMEZONE_EMPTY |
drupal/ |
New users will get an empty time zone at registration. | ||
| FIELD_BEHAVIOR_NONE |
drupal/ |
Value for field API indicating a widget doesn't accept default values. | ||
| IMAGE_STORAGE_MODULE |
drupal/ |
Image style constant to represent any module-based preset. | 1 | |
| LOCALE_TRANSLATION_USE_SOURCE_LOCAL |
drupal/ |
Translation update mode: Use local files only. | ||
| LOCALE_TRANSLATION_DEFAULT_SERVER_PATTERN |
drupal/ |
Default location of gettext file on the translation server. | ||
| LOCALE_TRANSLATION_DEFAULT_FILENAME |
drupal/ |
Default file name of translation files stored in the local file system. | ||
| FILTER_TYPE_TRANSFORM_REVERSIBLE |
drupal/ |
Reversible transformation filters. | ||
| REQUIRED_D7_SCHEMA_VERSION |
drupal/ |
Minimum schema version of Drupal 7 required for upgrade to Drupal 8. | 1 | |
| REQUIREMENT_INFO |
drupal/ |
Requirement severity -- Informational message only. | 1 | |
| REQUIREMENT_OK |
drupal/ |
Requirement severity -- Requirement successfully met. | 1 | |
| FILE_NOT_EXIST |
drupal/ |
File permission check -- File does not exist. | 1 | |
| STREAM_WRAPPERS_READ |
drupal/ |
Stream wrapper bit flag -- wrapper is readable (almost always true). | 1 | |
| STREAM_WRAPPERS_WRITE |
drupal/ |
Stream wrapper bit flag -- wrapper is writeable. | 1 | |
| STREAM_WRAPPERS_VISIBLE |
drupal/ |
Stream wrapper bit flag -- exposed in the UI and potentially web accessible. | 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_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… | 1 | 1 |
| ERROR_REPORTING_DISPLAY_SOME |
drupal/ |
Error reporting level: display errors and warnings. | 1 | |
| ERROR_REPORTING_DISPLAY_ALL |
drupal/ |
Error reporting level: display all messages. | 1 | |
| 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_PAGE_HEADER |
drupal/ |
Seventh bootstrap phase: set up the page header. | 1 | |
| UNICODE_ERROR |
drupal/ |
Indicates an error during check for PHP unicode support. | 1 | |
| CHECK_PLAIN |
drupal/ |
Flag for drupal_set_title(); text is not sanitized, so run check_plain(). | 1 | |
| JS_SETTING |
drupal/ |
The default group for JavaScript settings added to the page. | 1 | |
| DRUPAL_CACHE_GLOBAL |
drupal/ |
The block or element is the same for every user and page that it is visible. | 1 | |
| MENU_IS_LOCAL_ACTION |
drupal/ |
Internal menu flag -- menu item is a local action. | 1 | |
| MENU_ACCESS_DENIED |
drupal/ |
Internal menu status code -- Menu item access is denied. | 1 | |
| MENU_PREFERRED_LINK |
drupal/ |
Reserved key to identify the most specific menu link for a given path. | 1 | |
| OPENID_RAND_SOURCE |
drupal/ |
Random number generator; used for Diffie-Hellman key exchange computations. | 1 | |
| OPENID_NS_1_1 |
drupal/ |
OpenID Authentication 1.1 namespace URL; used for backwards-compatibility. | 1 | |
| OPENID_NS_1_0 |
drupal/ |
OpenID Authentication 1.0 namespace URL; used for backwards-compatibility. | 1 | |
| DRUPAL_USER_TIMEZONE_SELECT |
drupal/ |
New users will select their own timezone at registration. | 1 | |
| REGIONS_ALL |
drupal/ |
Return all regions. | 1 | |
| FIELD_BEHAVIOR_CUSTOM |
drupal/ |
Value for field API indicating a widget can receive several field values. | 1 | |
| FIELD_STORAGE_INSERT |
drupal/ |
Argument for an insert operation. | 1 | |
| PREG_CLASS_NUMBERS |
drupal/ |
Matches all 'N' Unicode character classes (numbers) | 1 | 1 |
| PREG_CLASS_PUNCTUATION |
drupal/ |
Matches all 'P' Unicode character classes (punctuation) | 1 | 1 |
| BLOCK_CUSTOM_DISABLED |
drupal/ |
Hides this block by default but lets individual users show it. | 1 |