Documentation & API reference
Constants
Primary tabs
| Name | Location | Description |
Direct uses |
Strings |
|---|---|---|---|---|
| MENU_IS_ROOT |
drupal/ |
Internal menu flag -- menu item is the root of the menu tree. | 1 | |
| MENU_MODIFIED_BY_ADMIN |
drupal/ |
Internal menu flag -- menu item can be modified by administrator. | 1 | |
| MENU_CREATED_BY_ADMIN |
drupal/ |
Internal menu flag -- menu item was created by administrator. | 1 | |
| MENU_FOUND |
drupal/ |
Internal menu status code -- Menu item was found. | 1 | |
| STREAM_WRAPPERS_ALL |
drupal/ |
Stream wrapper bit flag -- a filter that matches all wrappers. | 1 | |
| DRUPAL_USER_TIMEZONE_EMPTY |
drupal/ |
New users will get an empty time zone at registration. | 1 | |
| OPENID_RAND_SOURCE |
drupal/ |
Random number generator; used for Diffie-Hellman key exchange computations. | 1 | |
| OPENID_NS_OPENID |
drupal/ |
OpenID namespace used in Yadis documents. | 1 | |
| OPENID_NS_XRD |
drupal/ |
Extensible Resource Descriptor documents. | 1 | |
| IMAGE_STORAGE_MODULE |
drupal/ |
Image style constant to represent any module-based preset. | 1 | |
| UNICODE_ERROR |
drupal/ |
Indicates an error during check for PHP unicode support. | 1 | 1 |
| FILE_NOT_EXIST |
drupal/ |
File permission check -- File does not exist. | 1 | 1 |
| REQUIRED_D6_SCHEMA_VERSION |
drupal/ |
Minimum schema version of Drupal 6 required for upgrade to Drupal 7. | 1 | 1 |
| LOCALE_LANGUAGE_NEGOTIATION_URL_FALLBACK |
drupal/ |
If no URL language is available language is determined using an already detected one. | 1 | 1 |
| LOCALE_LANGUAGE_NEGOTIATION_USER |
drupal/ |
The language is set based on the user language settings. | 1 | 1 |
| LOCALE_LANGUAGE_NEGOTIATION_SESSION |
drupal/ |
The language is set based on the request/session parameters. | 1 | 1 |
| LOCALE_JS_STRING |
drupal/ |
Regular expression pattern used to localize JavaScript strings. | 1 | 1 |
| LOCALE_JS_OBJECT |
drupal/ |
Regular expression pattern used to match simple JS object literal. | 1 | 1 |
| LOCALE_JS_OBJECT_CONTEXT |
drupal/ |
Regular expression to match an object containing a key 'context'. | 1 | 1 |
| LOCALE_IMPORT_OVERWRITE |
drupal/ |
Translation import mode overwriting all existing translations if new translated version available. | 1 | 1 |
| DRUPAL_CACHE_GLOBAL |
drupal/ |
The block or element is the same for every user and page that it is visible. | 1 | 1 |
| MENU_IS_LOCAL_ACTION |
drupal/ |
Internal menu flag -- menu item is a local action. | 1 | 1 |
| MENU_PREFERRED_LINK |
drupal/ |
Reserved key to identify the most specific menu link for a given path. | 1 | 1 |
| DRUPAL_MINIMUM_PHP_MEMORY_LIMIT |
drupal/ |
Minimum recommended value of PHP memory_limit. | 1 | 1 |
| ERROR_REPORTING_HIDE |
drupal/ |
Error reporting level: display no errors. | 1 | 1 |
| DRUPAL_BOOTSTRAP_PAGE_CACHE |
drupal/ |
Second bootstrap phase: try to serve a cached page. | 1 | 1 |
| DRUPAL_BOOTSTRAP_PAGE_HEADER |
drupal/ |
Sixth bootstrap phase: set up the page header. | 1 | 1 |
| CHECK_PLAIN |
drupal/ |
Flag used to indicate that text is not sanitized, so run check_plain(). | 1 | 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_READ_VISIBLE |
drupal/ |
Stream wrapper type flag -- visible and read-only. | 1 | 1 |
| UPDATE_DEFAULT_URL |
drupal/ |
URL to check for updates, if a given project doesn't define its own. | 1 | 1 |
| UPDATE_MAX_FETCH_ATTEMPTS |
drupal/ |
Maximum number of attempts to fetch available update data from a given host. | 1 | 1 |
| UPDATE_MAX_FETCH_TIME |
drupal/ |
Maximum number of seconds to try fetching available update data at a time. | 1 | 1 |
| FIELD_STORAGE_INSERT |
drupal/ |
Argument for an insert operation. | 1 | 1 |
| SEARCH_TYPE |
drupal/ |
1 | 1 | |
| SEARCH_TYPE_2 |
drupal/ |
1 | 1 | |
| SEARCH_TYPE_JPN |
drupal/ |
1 | 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 |
| DRUPAL_USER_TIMEZONE_SELECT |
drupal/ |
New users will select their own timezone at registration. | 1 | 1 |
| DRUPAL_WEIGHT_SELECT_MAX |
drupal/ |
Maximum number of values in a weight select element. | 1 | 1 |
| ARCHIVE_TAR_ATT_SEPARATOR |
drupal/ |
1 | 1 | |
| ARCHIVE_TAR_END_BLOCK |
drupal/ |
1 | 1 | |
| SIMPLETEST_MINIMUM_PHP_MEMORY_LIMIT |
drupal/ |
Minimum value of PHP memory_limit for SimpleTest. | 1 | 1 |
| OPENID_SHA1_BLOCKSIZE |
drupal/ |
SHA-1 hash block size; used for Diffie-Hellman key exchange computations. | 1 | 1 |
| OPENID_NS_1_1 |
drupal/ |
OpenID Authentication 1.1 namespace URL; used for backwards-compatibility. | 1 | 1 |
| OPENID_NS_1_0 |
drupal/ |
OpenID Authentication 1.0 namespace URL; used for backwards-compatibility. | 1 | 1 |