Documentation & API reference
Functions
Primary tabs
| Name | Location | Description |
Direct uses |
Strings |
|---|---|---|---|---|
| t |
drupal/ |
Translates a string to the current language or to a given language. | 1,903 | 28 |
| variable_get |
drupal/ |
Returns a persistent variable. | 639 | 1 |
| variable_set |
drupal/ |
Sets a persistent variable. | 387 | |
| url |
drupal/ |
Generates an internal or external URL. | 303 | 14 |
| drupal_set_message |
drupal/ |
Sets a message to display to the user. | 267 | |
| format_string |
drupal/ |
Formats a string for HTML display by replacing variable placeholders. | 253 | 1 |
| theme |
drupal/ |
Generates themed output. | 218 | 38 |
| check_plain |
drupal/ |
Encodes special characters in a plain-text string for display as HTML. | 188 | 10 |
| drupal_static |
drupal/ |
Provides central static variable storage. | 184 | |
| drupal_get_path |
drupal/ |
Returns the path to a system item (module, theme, etc.). | 170 | 1 |
| user_access |
drupal/ |
Determine whether the user has a given privilege. | 154 | 13 |
| module_invoke_all |
drupal/ |
Invokes a hook in all enabled modules that implement it. | 147 | |
| l |
drupal/ |
Formats an internal or external URL link as an HTML anchor tag. | 141 | 2 |
| db_query |
drupal/ |
Executes an arbitrary query string against the active database. | 128 | 2 |
| watchdog |
drupal/ |
Logs a system message. | 124 | 9 |
| db_select |
drupal/ |
Returns a new SelectQuery object for the active database. | 113 | |
| drupal_static_reset |
drupal/ |
Resets one or all centrally stored static variable(s). | 111 | |
| drupal_alter |
drupal/ |
Passes alterable variables to specific hook_TYPE_alter() implementations. | 92 | 3 |
| drupal_render |
drupal/ |
Renders HTML given a structured array tree. | 91 | 1 |
| node_load |
drupal/ |
Loads a node object from the database. | 87 | |
| form_set_error |
drupal/ |
Files an error against a form element. | 85 | 1 |
| variable_del |
drupal/ |
Unsets a persistent variable. | 81 | |
| field_create_field |
drupal/ |
Creates a field. | 81 | |
| field_create_instance |
drupal/ |
Creates an instance of a field, binding it to a bundle. | 81 | |
| cache_clear_all |
drupal/ |
Expires data from the cache. | 80 | 2 |
| module_invoke |
drupal/ |
Invokes a hook in a particular module. | 70 | |
| module_implements |
drupal/ |
Determines which modules are implementing a hook. | 69 | 4 |
| element_children |
drupal/ |
Identifies the children of an element array, optionally sorted by weight. | 68 | |
| drupal_set_title |
drupal/ |
Sets the title of the current page. | 67 | |
| field_info_field |
drupal/ |
Returns data about an individual field, given a field name. | 62 | |
| db_change_field |
drupal/ |
Changes a field definition. | 57 | |
| format_date |
drupal/ |
Formats a date, using a date type or a custom date format string. | 56 | |
| user_load |
drupal/ |
Loads a user object. | 55 | |
| cache_get |
drupal/ |
Returns data from the persistent cache. | 54 | 1 |
| cache_set |
drupal/ |
Stores data in the persistent cache. | 51 | |
| format_plural |
drupal/ |
Formats a string containing a count of items. | 51 | |
| drupal_add_js |
drupal/ |
Adds a JavaScript file, setting, or inline code to the page. | 51 | 8 |
| drupal_strtolower |
drupal/ |
Lowercase a UTF-8 string. | 49 | |
| drupal_get_form |
drupal/ |
Returns a renderable form array for a given form ID. | 49 | 32 |
| drupal_realpath |
drupal/ |
Resolves the absolute filepath of a local URI or filepath. | 47 | |
| language_list |
drupal/ |
Returns a list of installed languages, indexed by the specified key. | 47 | 14 |
| module_load_include |
drupal/ |
Loads a module include file. | 46 | |
| field_info_instance |
drupal/ |
Returns an array of instance data for a specific field and bundle. | 46 | |
| drupal_goto |
drupal/ |
Sends the user to a different page. | 45 | 4 |
| module_exists |
drupal/ |
Determines whether a given module exists. | 43 | |
| confirm_form |
drupal/ |
Generates a form array for a confirmation form. | 43 | |
| field_test_create_stub_entity |
drupal/ |
Creates a basic test_entity entity. | 43 | 1 |
| drupal_add_css |
drupal/ |
Adds a cascading stylesheet to the stylesheet queue. | 42 | 3 |
| entity_extract_ids |
drupal/ |
Helper function to extract id, vid, and bundle name from an entity. | 42 | |
| drupal_attributes |
drupal/ |
Converts an associative array to an XML/HTML tag attribute string. | 41 |