Documentation & API reference
Constants
Primary tabs
| Name | Location | Description | Direct uses |
Strings |
|---|---|---|---|---|
| NODE_NOT_PUBLISHED |
drupal/ |
Node is not published. | 6 | 1 |
| NODE_PUBLISHED |
drupal/ |
Node is published. | 6 | 1 |
| NODE_NOT_PROMOTED |
drupal/ |
Node is not promoted to front page. | 3 | 1 |
| NODE_PROMOTED |
drupal/ |
Node is promoted to front page. | 3 | 1 |
| NODE_NOT_STICKY |
drupal/ |
Node is not sticky at top of the page. | 3 | 1 |
| NODE_STICKY |
drupal/ |
Node is sticky at top of the page. | 3 | 1 |
| NODE_NEW_LIMIT |
drupal/ |
Nodes changed before this time are always marked as read. | 3 | 1 |
| NODE_ACCESS_ALLOW |
drupal/ |
Modules should return this value from hook_node_access() to allow access to a node. | 3 | 1 |
| NODE_ACCESS_DENY |
drupal/ |
Modules should return this value from hook_node_access() to deny access to a node. | 1 | 1 |
| NODE_ACCESS_IGNORE |
drupal/ |
Modules should return this value from hook_node_access() to not affect node access. | 2 | 1 |
| USERNAME_MAX_LENGTH |
drupal/ |
Maximum length of username text field. | 6 | 1 |
| EMAIL_MAX_LENGTH |
drupal/ |
Maximum length of user e-mail text field. | 3 | 1 |
| USER_REGISTER_ADMINISTRATORS_ONLY |
drupal/ |
Only administrators can create user accounts. | 4 | 1 |
| USER_REGISTER_VISITORS |
drupal/ |
Visitors can create their own accounts. | 17 | 1 |
| USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL |
drupal/ |
Visitors can create accounts, but they don't become active without administrative approval. | 12 | 1 |
| RDF_DEFAULT_BUNDLE |
drupal/ |
RDF bundle flag: Default bundle. | 6 | 1 |
| TRANSLATION_ENABLED |
drupal/ |
Identifies a content type which has translation support enabled. | 1 | 1 |
| COMMENT_NOT_PUBLISHED |
drupal/ |
Comment is awaiting approval. | 13 | 1 |
| COMMENT_PUBLISHED |
drupal/ |
Comment is published. | 19 | 1 |
| COMMENT_MODE_FLAT |
drupal/ |
Comments are displayed in a flat list - expanded. | 6 | 1 |
| COMMENT_MODE_THREADED |
drupal/ |
Comments are displayed as a threaded list - expanded. | 17 | 1 |
| COMMENT_ANONYMOUS_MAYNOT_CONTACT |
drupal/ |
Anonymous posters cannot enter their contact information. | 2 | 1 |
| COMMENT_ANONYMOUS_MAY_CONTACT |
drupal/ |
Anonymous posters may leave their contact information. | 2 | 1 |
| COMMENT_ANONYMOUS_MUST_CONTACT |
drupal/ |
Anonymous posters are required to leave their contact information. | 1 | 1 |
| COMMENT_FORM_SEPARATE_PAGE |
drupal/ |
Comment form should be displayed on a separate page. | 4 | 1 |
| COMMENT_FORM_BELOW |
drupal/ |
Comment form should be shown below post or list of comments. | 8 | 1 |
| COMMENT_NODE_HIDDEN |
drupal/ |
Comments for this node are hidden. | 9 | 1 |
| COMMENT_NODE_CLOSED |
drupal/ |
Comments for this node are closed. | 5 | 1 |
| COMMENT_NODE_OPEN |
drupal/ |
Comments for this node are open. | 13 | 1 |
| BLOCK_REGION_NONE |
drupal/ |
Denotes that a block is not enabled in any region and should not be shown. | 7 | 1 |
| BLOCK_CUSTOM_FIXED |
drupal/ |
Users cannot control whether or not they see this block. | 2 | 1 |
| BLOCK_CUSTOM_ENABLED |
drupal/ |
Shows this block by default, but lets individual users hide it. | 2 | 1 |
| BLOCK_CUSTOM_DISABLED |
drupal/ |
Hides this block by default but lets individual users show it. | 1 | 1 |
| BLOCK_VISIBILITY_NOTLISTED |
drupal/ |
Shows this block on every page except the listed pages. | 1 | 1 |
| BLOCK_VISIBILITY_LISTED |
drupal/ |
Shows this block on only the listed pages. | 3 | 1 |
| BLOCK_VISIBILITY_PHP |
drupal/ |
Shows this block if the associated PHP code returns TRUE. | 2 | 1 |
| IMAGE_STORAGE_NORMAL |
drupal/ |
Image style constant for user presets in the database. | 3 | 1 |
| IMAGE_STORAGE_OVERRIDE |
drupal/ |
Image style constant for user presets that override module-defined presets. | 3 | 1 |
| IMAGE_STORAGE_DEFAULT |
drupal/ |
Image style constant for module-defined presets in code. | 3 | 1 |
| IMAGE_STORAGE_EDITABLE |
drupal/ |
Image style constant to represent an editable preset. | 2 | 1 |
| IMAGE_STORAGE_MODULE |
drupal/ |
Image style constant to represent any module-based preset. | 1 | |
| IMAGE_DERIVATIVE_TOKEN |
drupal/ |
The name of the query parameter for image derivative tokens. | 1 | 1 |
| POSTGRESQL_NEXTID_LOCK |
drupal/ |
The name by which to obtain a lock for retrieving the next insert id. | 1 | 1 |
| FILE_URL_TEST_CDN_1 |
drupal/ |
@file Helper module for the file tests. | 2 | 1 |
| FILE_URL_TEST_CDN_2 |
drupal/ |
3 | 1 | |
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Defines the root directory of the Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Root directory of Drupal installation. | 162 | 9 |
| DRUPAL_ROOT |
drupal/ |
Root directory of Drupal installation. | 162 | 9 |