Common functions that many Drupal modules will need to reference.
The functions that are critical and need to be available even when serving a cached page are instead located in bootstrap.inc.
File
core/includes/common.inc
Functions
| Name | Description |
|---|---|
| archiver_get_archiver | Creates the appropriate archiver for the specified file. |
| archiver_get_extensions | Returns a string of supported archive extensions. |
| base_path | Returns the base URL path (i.e., directory) of the Drupal installation. |
| check_url Deprecated | Strips dangerous protocols from a URI and encodes it for output to HTML. |
| date_iso8601 | Returns an ISO8601 formatted date based on the given date. |
| debug | Outputs debug information. |
| drupal_attach_tabledrag | Assists in attaching the tableDrag JavaScript behavior to a themed table. |
| drupal_check_incompatibility | Checks whether a version is compatible with a given dependency. |
| drupal_clear_css_cache Deprecated | Deletes old cached CSS files. |
| drupal_clear_js_cache Deprecated | Deletes old cached JavaScript files and variables. |
| drupal_flush_all_caches | Flushes all persistent caches, resets all variables, and rebuilds all data structures. |
| drupal_get_destination Deprecated | Prepares a 'destination' URL query parameter. |
| drupal_get_filetransfer_info | Assembles the Drupal FileTransfer registry. |
| drupal_get_updaters | Assembles the Drupal Updater registry. |
| drupal_http_header_attributes | Formats an attribute string for an HTTP header. |
| drupal_js_defaults | Constructs an array of the defaults that are used for JavaScript assets. |
| drupal_pre_render_link Deprecated | Pre-render callback: Renders a link into #markup. |
| drupal_pre_render_links | Pre-render callback: Collects child links into a single array. |
| drupal_process_states | Adds JavaScript to change the state of an element based on another element. |
| drupal_render Deprecated | Renders HTML given a structured array tree. |
| drupal_render_children Deprecated | Renders children of an element and concatenates them. |
| drupal_render_root Deprecated | Renders final HTML given a structured array tree. |
| drupal_set_time_limit | Attempts to set the PHP maximum execution time. |
| element_info Deprecated | Retrieves the default properties for the defined element type. |
| element_info_property Deprecated | Retrieves a single property for the defined element type. |
| format_date Deprecated | Formats a date, using a date type or a custom date format string. |
| format_size | Generates a string representation for the given byte count. |
| hide | Hides an element from later rendering. |
| render | Renders an element. |
| show | Shows a hidden element for later rendering. |
| valid_email_address Deprecated | Verifies the syntax of the given email address. |
| _drupal_flush_css_js | Changes the dummy query string added to all CSS and JavaScript files. |
Constants
| Name | Description |
|---|---|
| CSS_AGGREGATE_DEFAULT | The default aggregation group for CSS files added to the page. |
| CSS_AGGREGATE_THEME | The default aggregation group for theme CSS files added to the page. |
| CSS_BASE | The default weight for CSS rules that style HTML elements ("base" styles). |
| CSS_COMPONENT | The default weight for CSS rules that style design components (and their associated states and themes.) |
| CSS_LAYOUT | The default weight for CSS rules that layout a page. |
| CSS_STATE | The default weight for CSS rules that style states and are not included with components. |
| CSS_THEME | The default weight for CSS rules that style themes and are not included with components. |
| JS_DEFAULT | The default group for module JavaScript code added to the page. |
| JS_LIBRARY | The default group for JavaScript and jQuery libraries added to the page. |
| JS_SETTING | The default group for JavaScript settings added to the page. |
| JS_THEME | The default group for theme JavaScript code added to the page. |
| LOCALE_PLURAL_DELIMITER Deprecated | The delimiter used to split plural strings. |
| SAVED_DELETED | Return status for saving which deleted an existing item. |
| SAVED_NEW | Return status for saving which involved creating a new item. |
| SAVED_UPDATED | Return status for saving which involved an update to an existing item. |
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