Documentation & API reference
Functions
Primary tabs
| Name |
Location |
Description | Direct uses | Strings |
|---|---|---|---|---|
| drupal_encode_path |
drupal/ |
Encodes a Drupal path for use in a URL. | 4 | |
| drupal_goto |
drupal/ |
Sends the user to a different Drupal page. | 40 | 4 |
| _external_url_is_local |
drupal/ |
Determines if an external URL points to this Drupal installation. | 1 | |
| drupal_http_request |
drupal/ |
Performs an HTTP request. | 19 | |
| _drupal_http_use_proxy |
drupal/ |
Helper function for determining hosts excluded from needing a proxy. | 1 | |
| valid_email_address |
drupal/ |
Verifies the syntax of the given e-mail address. | 4 | |
| valid_url |
drupal/ |
Verifies the syntax of the given URL. | 7 | |
| valid_number_step |
drupal/ |
Verifies that a number is a multiple of a given step. | 3 | |
| drupal_strip_dangerous_protocols |
drupal/ |
Strips dangerous protocols (e.g. 'javascript:') from a URI. | 8 | |
| check_url |
drupal/ |
Strips dangerous protocols from a URI and encodes it for output to HTML. | 22 | |
| filter_xss_admin |
drupal/ |
Applies a very permissive XSS/HTML filter for admin-only use. | 39 | 1 |
| filter_xss |
drupal/ |
Filters HTML to prevent cross-site-scripting (XSS) vulnerabilities. | 26 | |
| _filter_xss_split |
drupal/ |
Processes an HTML tag. | 1 | 1 |
| _filter_xss_attributes |
drupal/ |
Processes a string of HTML attributes. | 1 | |
| filter_xss_bad_protocol |
drupal/ |
Processes an HTML attribute value and strips dangerous protocols from URLs. | 1 | |
| format_rss_channel |
drupal/ |
Formats an RSS channel. | 2 | |
| format_rss_item |
drupal/ |
Formats a single RSS item. | 2 | |
| format_xml_elements |
drupal/ |
Formats XML elements. | 7 | |
| format_plural |
drupal/ |
Formats a string containing a count of items. | 64 | |
| parse_size |
drupal/ |
Parses a given byte count. | 7 | |
| format_size |
drupal/ |
Generates a string representation for the given byte count. | 17 | |
| format_interval |
drupal/ |
Formats a time interval with the requested granularity. | 36 | 9 |
| format_date |
drupal/ |
Formats a date, using a date type or a custom date format string. | 65 | |
| date_iso8601 |
drupal/ |
Returns an ISO8601 formatted date based on the given date. | 5 | |
| _format_date_callback |
drupal/ |
Translates a formatted date string. | 1 | 1 |
| url |
drupal/ |
Generates an internal or external URL. | 302 | 23 |
| url_is_external |
drupal/ |
Returns TRUE if a path is external to Drupal (e.g. http://example.com). | 7 | |
| drupal_http_header_attributes |
drupal/ |
Formats an attribute string for an HTTP header. | 1 | |
| l |
drupal/ |
Formats an internal or external URL link as an HTML anchor tag. | 138 | 31 |
| drupal_exit |
drupal/ |
Performs end-of-request tasks. | 12 | |
| drupal_map_assoc |
drupal/ |
Forms an associative array from a linear array. | 51 | |
| drupal_set_time_limit |
drupal/ |
Attempts to set the PHP maximum execution time. | 4 | |
| drupal_get_path |
drupal/ |
Returns the path to a system item (module, theme, etc.). | 178 | 1 |
| base_path |
drupal/ |
Returns the base URL path (i.e., directory) of the Drupal installation. | 28 | |
| drupal_add_html_head_link |
drupal/ |
Adds a LINK tag with a distinct 'rel' attribute to the page's HEAD. | 9 | |
| drupal_add_css |
drupal/ |
Adds a cascading stylesheet to the stylesheet queue. | 35 | 4 |
| drupal_get_css |
drupal/ |
Returns a themed representation of all stylesheets to attach to the page. | 15 | |
| drupal_sort_css_js |
drupal/ |
Sorts CSS and JavaScript resources. | 2 | |
| drupal_group_css |
drupal/ |
Grouping callback: Groups CSS items by their types, media, and browsers. | 1 | |
| drupal_aggregate_css |
drupal/ |
Aggregation callback: Aggregates CSS files and inline content. | 1 | |
| drupal_pre_render_styles |
drupal/ |
Pre-render callback: Adds the elements needed for CSS tags to be rendered. | 1 | |
| drupal_build_css_cache |
drupal/ |
Aggregates and optimizes CSS files into a cache file in the files directory. | 1 | |
| _drupal_build_css_path |
drupal/ |
Prefixes all paths within a CSS file for drupal_build_css_cache(). | 2 | 2 |
| drupal_load_stylesheet |
drupal/ |
Loads the stylesheet and resolves all @import commands. | 4 | |
| drupal_load_stylesheet_content |
drupal/ |
Processes the contents of a stylesheet for aggregation. | 3 | |
| _drupal_load_stylesheet |
drupal/ |
Loads stylesheets recursively and returns contents with corrected paths. | 1 | |
| drupal_clear_css_cache |
drupal/ |
Deletes old cached CSS files. | 3 | 1 |
| drupal_delete_file_if_stale |
drupal/ |
Deletes files modified more than a set time ago. | 2 | |
| drupal_clean_css_identifier |
drupal/ |
Prepares a string for use as a CSS identifier (element, class, or ID name). | 15 | 1 |
| drupal_html_class |
drupal/ |
Prepares a string for use as a valid class name. | 17 |