| wp-includes/https-migration.php: wp_update_https_migration_required() | Updates the ‘https_migration_required’ option if needed when the given URL has been updated from HTTP to HTTPS. |
| wp-includes/functions.php: clean_dirsize_cache() | Cleans directory size cache used by recurse_dirsize(). |
| wp-admin/includes/class-wp-debug-data.php: WP_Debug_Data::get_sizes() | Fetch the sizes of the WordPress directories: wordpress (ABSPATH), plugins, themes, and uploads. |
| wp-admin/includes/class-wp-debug-data.php: WP_Debug_Data::debug_data() | Static function for generating site debug data when required. |
| wp-includes/ms-site.php: wp_initialize_site() | Runs the initialization routine for a given site. |
| wp-includes/l10n.php: load_script_textdomain() | Loads the script translated strings. |
| wp-includes/rest-api/class-wp-rest-request.php: WP_REST_Request::from_url() | Retrieves a WP_REST_Request object from a full URL. |
| wp-includes/functions.php: _wp_upload_dir() | A non-filtered, non-cached version of wp_upload_dir() that doesn’t check the path. |
| wp-includes/rest-api.php: rest_api_loaded() | Loads the REST API. |
| wp-admin/includes/class-wp-ms-sites-list-table.php: WP_MS_Sites_List_Table::handle_row_actions() | Generates and displays row action links. |
| wp-admin/includes/class-wp-ms-sites-list-table.php: WP_MS_Sites_List_Table::column_cb() | Handles the checkbox column output. |
| wp-admin/includes/class-wp-ms-sites-list-table.php: WP_MS_Sites_List_Table::column_blogname() | Handles the site name column output. |
| wp-signup.php: confirm_another_blog_signup() | Confirm a new site signup. |
| wp-admin/includes/class-wp-automatic-updater.php: WP_Automatic_Updater::is_vcs_checkout() | Check for version control checkouts. |
| wp-admin/includes/class-wp-filesystem-ssh2.php: WP_Filesystem_SSH2::mkdir() | Creates a directory. |
| wp-admin/includes/class-wp-filesystem-ftpext.php: WP_Filesystem_FTPext::mkdir() | Creates a directory. |
| wp-admin/includes/class-wp-filesystem-base.php: WP_Filesystem_Base::search_for_folder() | Locates a folder on the remote filesystem. |
| wp-admin/includes/class-wp-filesystem-direct.php: WP_Filesystem_Direct::mkdir() | Creates a directory. |
| wp-includes/formatting.php: url_shorten() | Shorten a URL, to be used as link text. |
| wp-admin/includes/upgrade.php: get_alloptions_110() | Retrieve all options as it was for 1.2. |
| wp-admin/includes/post.php: get_sample_permalink() | Get a sample permalink based off of the post name. |
| wp-admin/includes/class-wp-comments-list-table.php: WP_Comments_List_Table::column_author() | |
| wp-admin/includes/class-wp-filesystem-ftpsockets.php: WP_Filesystem_ftpsockets::mkdir() | Creates a directory. |
| wp-admin/includes/file.php: unzip_file() | Unzips a specified ZIP file to a location on the filesystem via the WordPress Filesystem Abstraction. |
| wp-admin/includes/file.php: _unzip_file_ziparchive() | Attempts to unzip an archive using the ZipArchive class. |
| wp-admin/includes/file.php: _unzip_file_pclzip() | Attempts to unzip an archive using the PclZip library. |
| wp-includes/theme.php: register_theme_directory() | Registers a directory that contains themes. |
| wp-includes/formatting.php: trailingslashit() | Appends a trailing slash. |
| wp-includes/functions.php: _config_wp_home() | Retrieve the WordPress home page URL. |
| wp-includes/functions.php: _config_wp_siteurl() | Retrieve the WordPress site URL. |
| wp-includes/widgets/class-wp-widget-rss.php: WP_Widget_RSS::widget() | Outputs the content for the current RSS widget instance. |
| wp-includes/link-template.php: user_trailingslashit() | Retrieves a trailing-slashed string if the site is set for adding trailing slashes. |
| wp-includes/option.php: get_option() | Retrieves an option value based on an option name. |
| wp-includes/nav-menu-template.php: _wp_menu_item_classes_by_context() | Adds the class property classes for the current context, if applicable. |
| wp-includes/canonical.php: wp_redirect_admin_locations() | Redirects a variety of shorthand URLs to the admin. |
| wp-includes/canonical.php: redirect_canonical() | Redirects incoming links to the proper URL based on the site url. |
| wp-includes/functions.php: recurse_dirsize() | Get the size of a directory recursively. |
| wp-includes/ms-deprecated.php: install_blog() | Install an empty blog. |