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Title Object type File name Summary
drupal_group_css function includes/common.inc Default callback to group CSS items.
drupal_hash_base64 function includes/bootstrap.inc Calculates a base-64 encoded, URL-safe sha-256 hash.
DRUPAL_HASH_COUNT constant includes/password.inc The standard log2 number of iterations for password stretching. This should
increase by 1 every Drupal version in order to counteract increases in the
speed and power of computers available to crack the hashes.
DRUPAL_HASH_LENGTH constant includes/password.inc The expected (and maximum) number of characters in a hashed password.
drupal_help_arg function includes/menu.inc Generates elements for the $arg array in the help hook.
drupal_hmac_base64 function includes/bootstrap.inc Calculates a base-64 encoded, URL-safe sha-256 hmac.
drupal_html_class function includes/common.inc Prepares a string for use as a valid class name.
drupal_html_id function includes/common.inc Prepares a string for use as a valid HTML ID and guarantees uniqueness.
drupal_html_to_text function includes/mail.inc Transforms an HTML string into plain text, preserving its structure.
drupal_http_build_query function includes/common.inc Parses an array into a valid, rawurlencoded query string.
drupal_http_header_attributes function includes/common.inc Formats an attribute string for an HTTP header.
drupal_http_request function includes/common.inc Performs an HTTP request.
drupal_implode_tags function includes/common.inc Implodes an array of tags into a string.
drupal_installation_attempted function includes/bootstrap.inc Returns TRUE if a Drupal installation is currently being attempted.
drupal_install_fix_file function includes/install.inc Attempts to fix file permissions.
drupal_install_mkdir function includes/install.inc Creates a directory with the specified permissions.
drupal_install_profile_distribution_name function includes/install.inc Loads the installation profile, extracting its defined distribution name.
drupal_install_schema function includes/common.inc Creates all tables defined in a module's hook_schema().
drupal_install_system function includes/install.inc Installs the system module.
drupal_is_cli function includes/bootstrap.inc Detects whether the current script is running in a command-line environment.
drupal_is_denied function includes/bootstrap.inc Checks to see if an IP address has been blocked.
drupal_is_front_page function includes/path.inc Check if the current page is the front page.
drupal_is_https function includes/bootstrap.inc Checks whether an HTTPS request is being served.
drupal_json_decode function includes/common.inc Converts an HTML-safe JSON string into its PHP equivalent.
drupal_json_encode function includes/common.inc Converts a PHP variable into its JavaScript equivalent.
drupal_json_encode_helper function includes/json-encode.inc Encodes a PHP variable to HTML-safe JSON for PHP versions below 5.3.0.
drupal_json_output function includes/common.inc Returns data in JSON format.
drupal_js_defaults function includes/common.inc Constructs an array of the defaults that are used for JavaScript items.
DRUPAL_KILOBYTE constant includes/bootstrap.inc The number of bytes in a kilobyte.
drupal_language_initialize function includes/bootstrap.inc Initializes all the defined language types.
drupal_language_types function includes/bootstrap.inc Returns a list of the built-in language types.
drupal_load function includes/bootstrap.inc Includes a file with the provided type and name.
drupal_load_stylesheet function includes/common.inc Loads the stylesheet and resolves all @import commands.
drupal_load_stylesheet_content function includes/common.inc Processes the contents of a stylesheet for aggregation.
drupal_load_updates function includes/install.inc Loads .install files for installed modules to initialize the update system.
drupal_lookup_path function includes/path.inc Given an alias, return its Drupal system URL if one exists. Given a Drupal
system URL return one of its aliases if such a one exists. Otherwise,
return FALSE.
drupal_mail function includes/mail.inc Composes and optionally sends an e-mail message.
drupal_mail_format_display_name function includes/mail.inc Return a RFC-2822 compliant "display-name" component.
drupal_mail_system function includes/mail.inc Returns an object that implements the MailSystemInterface interface.
drupal_maintenance_theme function includes/bootstrap.inc Enables use of the theme system without requiring database access.
drupal_map_assoc function includes/common.inc Forms an associative array from a linear array.
drupal_match_path function includes/path.inc Check if a path matches any pattern in a set of patterns.
DRUPAL_MAXIMUM_TEMP_FILE_AGE constant modules/system/system.module Maximum age of temporary files in seconds.
DRUPAL_MAX_HASH_COUNT constant includes/password.inc The maximum allowed log2 number of iterations for password stretching.
DRUPAL_MINIMUM_PHP constant includes/bootstrap.inc Minimum supported version of PHP.
DRUPAL_MINIMUM_PHP_MEMORY_LIMIT constant includes/bootstrap.inc Minimum recommended value of PHP memory_limit.
DRUPAL_MIN_HASH_COUNT constant includes/password.inc The minimum allowed log2 number of iterations for password stretching.
drupal_mkdir function includes/file.inc Creates a directory, optionally creating missing components in the path to
the directory.
drupal_move_uploaded_file function includes/file.inc Moves an uploaded file to a new location.
drupal_multilingual function includes/bootstrap.inc Returns TRUE if there is more than one language enabled.

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