Documentation & API reference
Functions
Primary tabs
| Name |
Location |
Description | Direct uses | Strings |
|---|---|---|---|---|
| variable_del |
drupal/ |
Unsets a persistent variable. | 17 | |
| drupal_page_get_cache |
drupal/ |
Retrieves the current page from the cache. | 2 | |
| drupal_page_is_cacheable |
drupal/ |
Determines the cacheability of the current page. | 5 | |
| bootstrap_invoke_all |
drupal/ |
Invokes a bootstrap hook in all bootstrap modules that implement it. | ||
| drupal_load |
drupal/ |
Includes a file with the provided type and name. | 4 | |
| drupal_add_http_header Deprecated |
drupal/ |
Sets an HTTP response header for the current page. | 13 | |
| drupal_get_http_header Deprecated |
drupal/ |
Gets the HTTP response headers for the current page. | 3 | |
| _drupal_set_preferred_header_name Deprecated |
drupal/ |
Sets the preferred name for the HTTP header. | 2 | |
| drupal_send_headers Deprecated |
drupal/ |
Sends the HTTP response headers that were previously set, adding defaults. | 1 | |
| drupal_page_header Deprecated |
drupal/ |
Sets HTTP headers in preparation for a page response. | 1 | |
| drupal_serve_page_from_cache |
drupal/ |
Sets HTTP headers in preparation for a cached page response. | 3 | |
| bootstrap_hooks |
drupal/ |
Defines the critical hooks that force modules to always be loaded. | 1 | |
| t |
drupal/ |
Translates a string to the current language or to a given language. | 2,614 | 59 |
| format_string |
drupal/ |
Formats a string for HTML display by replacing variable placeholders. | 331 | |
| check_plain |
drupal/ |
Encodes special characters in a plain-text string for display as HTML. | 255 | 14 |
| drupal_validate_utf8 |
drupal/ |
Checks whether a string is valid UTF-8. | ||
| request_uri |
drupal/ |
Returns the equivalent of Apache's $_SERVER['REQUEST_URI'] variable. | 8 | |
| watchdog_exception |
drupal/ |
Logs an exception. | 12 | |
| watchdog |
drupal/ |
Logs a system message. | 115 | 4 |
| drupal_set_message |
drupal/ |
Sets a message to display to the user. | 270 | |
| drupal_get_messages |
drupal/ |
Returns all messages that have been set with drupal_set_message(). | 5 | |
| drupal_get_title |
drupal/ |
Gets the title of the current page. | 9 | |
| drupal_set_title |
drupal/ |
Sets the title of the current page. | 76 | |
| drupal_anonymous_user |
drupal/ |
Generates a default anonymous $user object. | 10 | |
| drupal_bootstrap |
drupal/ |
Ensures Drupal is bootstrapped to the specified phase. | 11 | |
| drupal_handle_request |
drupal/ |
Handles an entire PHP request. | 3 | |
| cache |
drupal/ |
Instantiates and statically caches the correct class for a cache bin. | 3 | 41 |
| cache_invalidate_tags Deprecated |
drupal/ |
Marks cache items from all bins with any of the specified tags as invalid. | 25 | 1 |
| drupal_get_query_array |
drupal/ |
Splits a URL-encoded query string into an array. | 4 | |
| drupal_http_build_query Deprecated |
drupal/ |
Parses an array into a valid, rawurlencoded query string. | 10 | |
| drupal_get_destination |
drupal/ |
Prepares a 'destination' URL query parameter for use with drupal_goto(). | 42 | 1 |
| drupal_parse_url |
drupal/ |
Parses a system URL string into an associative array suitable for url(). | 8 | |
| 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. | 28 | 4 |
| _external_url_is_local |
drupal/ |
Determines if an external URL points to this Drupal installation. | 1 | |
| _drupal_http_use_proxy |
drupal/ |
Helper function for determining hosts excluded from needing a proxy. | ||
| valid_email_address |
drupal/ |
Verifies the syntax of the given e-mail address. | 4 | |
| valid_url Deprecated |
drupal/ |
Verifies the syntax of the given URL. | 3 | |
| 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. | 5 | |
| check_url |
drupal/ |
Strips dangerous protocols from a URI and encodes it for output to HTML. | 21 | |
| filter_xss_admin |
drupal/ |
Applies a very permissive XSS/HTML filter for admin-only use. | 43 | 1 |
| filter_xss |
drupal/ |
Filters HTML to prevent cross-site-scripting (XSS) vulnerabilities. | 23 | |
| filter_xss_bad_protocol |
drupal/ |
Processes an HTML attribute value and strips dangerous protocols from URLs. | ||
| 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. | 68 | |
| parse_size |
drupal/ |
Parses a given byte count. | 7 | |
| format_size |
drupal/ |
Generates a string representation for the given byte count. | 17 |