Documentation & API reference
Functions
Primary tabs
Name |
Location | Description | Direct uses | Strings |
|---|---|---|---|---|
| drupal_retrieve_form |
drupal/ |
Retrieves the structured array that defines a given form. | 3 | |
| drupal_rewrite_settings |
drupal/ |
Replaces values in settings.php with values in the submitted array. | 1 | |
| drupal_rmdir |
drupal/ |
Removes a directory. | 6 | |
| drupal_save_session |
drupal/ |
Determines whether to save session data of the current request. | 16 | |
| drupal_schema_fields_sql |
drupal/ |
Retrieves a list of fields from a table schema. | 1 | |
| drupal_schema_field_types |
drupal/ |
Retrieves the type for every field in a table schema. | 1 | |
| drupal_send_headers |
drupal/ |
Sends the HTTP response headers that were previously set, adding defaults. | 4 | |
| drupal_serve_page_from_cache |
drupal/ |
Sets HTTP headers in preparation for a cached page response. | 2 | |
| drupal_session_commit |
drupal/ |
Commits the current session, if necessary. | 4 | 1 |
| drupal_session_destroy_uid |
drupal/ |
Ends a specific user's session(s). | 2 | |
| drupal_session_initialize |
drupal/ |
Initializes the session handler, starting a session if needed. | 1 | |
| drupal_session_regenerate |
drupal/ |
Called when an anonymous user becomes authenticated or vice-versa. | 3 | |
| drupal_session_start |
drupal/ |
Starts a session forcefully, preserving already set session data. | 4 | |
| drupal_session_started |
drupal/ |
Returns whether a session has been started. | 3 | |
| drupal_settings_initialize |
drupal/ |
Sets the base URL, cookie domain, and session name from configuration. | 1 | |
| drupal_set_breadcrumb |
drupal/ |
Sets the breadcrumb trail for the current page. | 8 | |
| drupal_set_installed_schema_version |
drupal/ |
Update the installed version information for a module. | 7 | |
| drupal_set_message |
drupal/ |
Sets a message to display to the user. | 267 | |
| drupal_set_page_content |
drupal/ |
Sets the main page content value for later use. | 5 | |
| drupal_set_time_limit |
drupal/ |
Attempts to set the PHP maximum execution time. | 5 | |
| drupal_set_title |
drupal/ |
Sets the title of the current page. | 67 | |
| drupal_site_offline |
drupal/ |
Delivers a "site is under maintenance" message to the browser. | ||
| drupal_sort_css_js |
drupal/ |
Sorts CSS and JavaScript resources. | 2 | |
| drupal_sort_title |
drupal/ |
Array sorting callback; sorts elements by 'title' key. | 1 | |
| drupal_sort_weight |
drupal/ |
Sorts a structured array by the 'weight' element. | 8 | |
| drupal_static |
drupal/ |
Provides central static variable storage. | 184 | |
| drupal_static_reset |
drupal/ |
Resets one or all centrally stored static variable(s). | 111 | |
| drupal_strip_dangerous_protocols |
drupal/ |
Strips dangerous protocols (e.g. 'javascript:') from a URI. | 7 | |
| drupal_strlen |
drupal/ |
Counts the number of characters in a UTF-8 string. | 21 | |
| drupal_strtolower |
drupal/ |
Lowercase a UTF-8 string. | 49 | |
| drupal_strtoupper |
drupal/ |
Uppercase a UTF-8 string. | 5 | 1 |
| drupal_substr |
drupal/ |
Cuts off a piece of a string based on character indices and counts. | 12 | 1 |
| drupal_system_listing |
drupal/ |
Returns information about system object files (modules, themes, etc.). | 7 | 1 |
| drupal_tempnam |
drupal/ |
Creates a file with a unique filename in the specified directory. | 6 | |
| drupal_theme_access |
drupal/ |
Determines if a theme is available to use. | 6 | 1 |
| drupal_theme_initialize |
drupal/ |
Initializes the theme system by loading the theme. | 15 | |
| drupal_theme_rebuild |
drupal/ |
Forces the system to rebuild the theme registry. | 8 | |
| drupal_truncate_bytes |
drupal/ |
Truncates a UTF-8-encoded string safely to a number of bytes. | 1 | |
| drupal_ucfirst |
drupal/ |
Capitalizes the first letter of a UTF-8 string. | 6 | |
| drupal_uninstall_modules |
drupal/ |
Uninstalls a given list of disabled modules. | 5 | |
| drupal_uninstall_schema |
drupal/ |
Removes all tables defined in a module's hook_schema(). | 1 | |
| drupal_unlink |
drupal/ |
Deletes a file. | 18 | |
| drupal_unpack |
drupal/ |
Unserializes and appends elements from a serialized string. | ||
| drupal_validate_form |
drupal/ |
Validates user-submitted form data in the $form_state array. | 1 | |
| drupal_validate_utf8 |
drupal/ |
Checks whether a string is valid UTF-8. | 1 | |
| drupal_valid_http_host |
drupal/ |
Validates that a hostname (for example $_SERVER['HTTP_HOST']) is safe. | 2 | |
| drupal_valid_path |
drupal/ |
Checks a path exists and the current user has access to it. | 4 | |
| drupal_valid_test_ua |
drupal/ |
Returns the test prefix if this is an internal request from SimpleTest. | 8 | |
| drupal_valid_token |
drupal/ |
Validates a token based on $value, the user session, and the private key. | 16 | |
| drupal_var_export |
drupal/ |
Drupal-friendly var_export(). |