get_option( string $option, mixed $default = false )

Retrieves an option value based on an option name.

Description

If the option does not exist or does not have a value, then the return value will be false. This is useful to check whether you need to install an option and is commonly used during installation of plugin options and to test whether upgrading is required.

If the option was serialized then it will be unserialized when it is returned.

Any scalar values will be returned as strings. You may coerce the return type of a given option by registering an ‘option_$option’ filter callback.

Parameters

$option

(string) (Required) Name of option to retrieve. Expected to not be SQL-escaped.

$default

(mixed) (Optional) Default value to return if the option does not exist.

Default value: false

Return

(mixed) Value set for the option.

Source

File: wp-includes/option.php 

function get_option( $option, $default = false ) {
	global $wpdb;

	$option = trim( $option );
	if ( empty( $option ) )
		return false;

	/**
	 * Filters the value of an existing option before it is retrieved.
	 *
	 * The dynamic portion of the hook name, `$option`, refers to the option name.
	 *
	 * Passing a truthy value to the filter will short-circuit retrieving
	 * the option value, returning the passed value instead.
	 *
	 * @since WP-1.5.0
	 * @since WP-4.4.0 The `$option` parameter was added.
	 * @since WP-4.9.0 The `$default` parameter was added.
	 *
	 *
	 * @param bool|mixed $pre_option The value to return instead of the option value. This differs from
	 *                               `$default`, which is used as the fallback value in the event the option
	 *                               doesn't exist elsewhere in get_option(). Default false (to skip past the
	 *                               short-circuit).
	 * @param string     $option     Option name.
	 * @param mixed      $default    The fallback value to return if the option does not exist.
	 *                               Default is false.
	 */
	$pre = apply_filters( "pre_option_{$option}", false, $option, $default );

	if ( false !== $pre )
		return $pre;

	if ( defined( 'WP_SETUP_CONFIG' ) )
		return false;

	// Distinguish between `false` as a default, and not passing one.
	$passed_default = func_num_args() > 1;

	if ( ! wp_installing() ) {
		// prevent non-existent options from triggering multiple queries
		$notoptions = wp_cache_get( 'notoptions', 'options' );
		if ( isset( $notoptions[ $option ] ) ) {
			/**
			 * Filters the default value for an option.
			 *
			 * The dynamic portion of the hook name, `$option`, refers to the option name.
			 *
			 * @since WP-3.4.0
			 * @since WP-4.4.0 The `$option` parameter was added.
			 * @since WP-4.7.0 The `$passed_default` parameter was added to distinguish between a `false` value and the default parameter value.
			 *
			 * @param mixed  $default The default value to return if the option does not exist
			 *                        in the database.
			 * @param string $option  Option name.
			 * @param bool   $passed_default Was `get_option()` passed a default value?
			 */
			return apply_filters( "default_option_{$option}", $default, $option, $passed_default );
		}

		$alloptions = wp_load_alloptions();

		if ( isset( $alloptions[$option] ) ) {
			$value = $alloptions[$option];
		} else {
			$value = wp_cache_get( $option, 'options' );

			if ( false === $value ) {
				$row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) );

				// Has to be get_row instead of get_var because of funkiness with 0, false, null values
				if ( is_object( $row ) ) {
					$value = $row->option_value;
					wp_cache_add( $option, $value, 'options' );
				} else { // option does not exist, so we must cache its non-existence
					if ( ! is_array( $notoptions ) ) {
						 $notoptions = array();
					}
					$notoptions[$option] = true;
					wp_cache_set( 'notoptions', $notoptions, 'options' );

					/** This filter is documented in wp-includes/option.php */
					return apply_filters( "default_option_{$option}", $default, $option, $passed_default );
				}
			}
		}
	} else {
		$suppress = $wpdb->suppress_errors();
		$row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) );
		$wpdb->suppress_errors( $suppress );
		if ( is_object( $row ) ) {
			$value = $row->option_value;
		} else {
			/** This filter is documented in wp-includes/option.php */
			return apply_filters( "default_option_{$option}", $default, $option, $passed_default );
		}
	}

	// If home is not set use siteurl.
	if ( 'home' == $option && '' == $value )
		return get_option( 'siteurl' );

	if ( in_array( $option, array('siteurl', 'home', 'category_base', 'tag_base') ) )
		$value = untrailingslashit( $value );

	/**
	 * Filters the value of an existing option.
	 *
	 * The dynamic portion of the hook name, `$option`, refers to the option name.
	 *
	 * @since WP-1.5.0 As 'option_' . $setting
	 * @since WP-3.0.0
	 * @since WP-4.4.0 The `$option` parameter was added.
	 *
	 * @param mixed  $value  Value of the option. If stored serialized, it will be
	 *                       unserialized prior to being returned.
	 * @param string $option Option name.
	 */
	return apply_filters( "option_{$option}", maybe_unserialize( $value ), $option );
}

Expand Source Code View on GitHub

Related

Uses

Uses
Uses Description
wp-includes/wp-db.php: wpdb::get_row()

Retrieve one row from the database.
wp-includes/wp-db.php: wpdb::prepare()

Prepares a SQL query for safe execution. Uses sprintf()-like syntax.
wp-includes/wp-db.php: wpdb::suppress_errors()

Whether to suppress database errors.
wp-includes/plugin.php: apply_filters()

Call the functions added to a filter hook.
wp-includes/option.php: wp_load_alloptions()

Loads and caches all autoloaded options, if available or all options.
wp-includes/option.php: get_option()

Retrieves an option value based on an option name.
wp-includes/option.php: pre_option_{$option}

Filters the value of an existing option before it is retrieved.
wp-includes/option.php: default_option_{$option}

Filters the default value for an option.
wp-includes/option.php: option_{$option}

Filters the value of an existing option.
wp-includes/cache.php: wp_cache_get()

Retrieves the cache contents from the cache by key and group.
wp-includes/cache.php: wp_cache_set()

Saves the data to the cache.
wp-includes/cache.php: wp_cache_add()

Adds data to the cache, if the cache key doesn’t already exist.
wp-includes/formatting.php: untrailingslashit()

Removes trailing forward slashes and backslashes if they exist.
wp-includes/load.php: wp_installing()

Check or set whether ClassicPress is in “installation” mode.
wp-includes/functions.php: maybe_unserialize()

Unserialize value only if it was serialized.
Show 10 more uses Hide more uses

Used By

Used By
Used By Description
wp-login.php: retrieve_password()

Handles sending password retrieval email to user.
wp-includes/deprecated.php: wp_richedit_pre()

Formats text for the rich text editor.
wp-includes/deprecated.php: wp_htmledit_pre()

Formats text for the HTML editor.
wp-includes/deprecated.php: get_current_theme()

Retrieve current theme name.
wp-includes/deprecated.php: get_boundary_post_rel_link()

Get boundary post relational link.
wp-includes/deprecated.php: get_parent_post_rel_link()

Get parent post relational link.
wp-includes/deprecated.php: make_url_footnote()

Strip HTML and put links at the bottom of stripped content.
wp-includes/deprecated.php: get_settings()

Get value based on option.
wp-includes/deprecated.php: get_links()

Gets the links associated with category by id.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::update()

Create/update the nav_menu term for this setting.
wp-includes/customize/class-wp-customize-date-time-control.php: WP_Customize_Date_Time_Control::content_template()

Renders a JS template for the content of date time control.
wp-includes/customize/class-wp-customize-date-time-control.php: WP_Customize_Date_Time_Control::get_timezone_info()

Get timezone info.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::value()

Get the instance data for a given widget setting.
wp-includes/general-template.php: get_login_image_html()

Return the HTML for the image on the login screen. This is either a link showing the ClassicPress logo (the default) or the site’s custom login image (if enabled).
wp-includes/general-template.php: get_language_attributes()

Gets the language attributes for the html tag.
wp-includes/general-template.php: noindex()

Displays a noindex meta tag if required by the blog configuration.
wp-includes/general-template.php: wp_no_robots()

Display a noindex meta tag.
wp-includes/general-template.php: get_the_modified_time()

Retrieve the time at which the post was last modified.
wp-includes/general-template.php: get_the_date()

Retrieve the date on which the post was written.
wp-includes/general-template.php: get_the_modified_date()

Retrieve the date on which the post was last modified.
wp-includes/general-template.php: get_the_time()

Retrieve the time at which the post was written.
wp-includes/general-template.php: wp_get_archives()

Display archive links based on type and format.
wp-includes/general-template.php: get_calendar()

Display calendar with days that have posts as links.
wp-includes/general-template.php: wp_register()

Display the Registration or Admin link.
wp-includes/general-template.php: get_bloginfo()

Retrieves information about the current site.
wp-includes/general-template.php: get_site_icon_url()

Returns the Site Icon URL.
wp-includes/script-loader.php: wp_localize_jquery_ui_datepicker()

Localizes the jQuery UI datepicker.
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/rest-api/class-wp-rest-server.php: WP_REST_Server::get_index()

Retrieves the site index.
wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php: WP_REST_Comments_Controller::create_item_permissions_check()

Checks if a given request has access to create a comment.
wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php: WP_REST_Comments_Controller::create_item()

Creates a comment.
wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php: WP_REST_Comments_Controller::get_item_schema()

Retrieves the comment’s schema, conforming to JSON Schema.
wp-includes/rest-api/class-wp-rest-server.php: WP_REST_Server::serve_request()

Handles serving an API request.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::get_item_schema()

Retrieves the user’s schema, conforming to JSON Schema.
wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php: WP_REST_Settings_Controller::get_item()

Retrieves the settings.
wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php: WP_REST_Settings_Controller::update_item()

Updates settings for the settings object.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::prepare_item_for_response()

Prepares a single post output for response.
wp-includes/widgets/class-wp-widget-rss.php: WP_Widget_RSS::widget()

Outputs the content for the current RSS widget instance.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::get_items()

Retrieves a collection of posts.
wp-includes/widgets/class-wp-widget-recent-comments.php: WP_Widget_Recent_Comments::widget()

Outputs the content for the current Recent Comments widget instance.
wp-includes/class-wp-post-type.php: WP_Post_Type::add_rewrite_rules()

Adds the necessary rewrite rules for the post type.
wp-includes/class-wp-taxonomy.php: WP_Taxonomy::set_props()

Sets taxonomy properties.
wp-includes/class-wp-taxonomy.php: WP_Taxonomy::add_rewrite_rules()

Adds the necessary rewrite rules for the taxonomy.
wp-includes/class-wp-post-type.php: WP_Post_Type::set_props()

Sets post type properties.
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::preview_sidebars_widgets()

When previewing, ensures the proper previewing widgets are used.
wp-includes/media.php: wp_enqueue_media()

Enqueues all scripts, styles, settings, and templates necessary to use all media JS APIs.
wp-includes/media.php: image_constrain_size_for_editor()

Scale down the default size of an image.
wp-includes/l10n.php: get_locale()

Retrieves the current locale.
wp-includes/class-wp-query.php: WP_Query::get_queried_object()

Retrieve queried object.
wp-includes/class-wp-query.php: WP_Query::is_front_page()

Is the query for the front page of the site?
wp-includes/class-wp-query.php: WP_Query::parse_query()

Parse a query string and set query type booleans.
wp-includes/class-wp-query.php: WP_Query::get_posts()

Retrieve the posts based on query variables.
wp-includes/pluggable.php: get_avatar()

Retrieve the avatar <img> tag for a user, email address, MD5 hash, comment, or post.
wp-includes/default-constants.php: wp_plugin_directory_constants()

Defines plugin directory ClassicPress constants
wp-includes/default-constants.php: wp_cookie_constants()

Defines cookie related ClassicPress constants
wp-includes/default-constants.php: wp_ssl_constants()

Defines cookie related ClassicPress constants
wp-includes/pluggable.php: wp_notify_postauthor()

Notify an author (and/or others) of a comment/trackback/pingback on a post.
wp-includes/pluggable.php: wp_notify_moderator()

Notifies the moderator of the site about a new comment that is awaiting approval.
wp-includes/pluggable.php: wp_password_change_notification()

Notify the blog admin of a user changing password, normally via email.
wp-includes/pluggable.php: wp_new_user_notification()

Email login credentials to a newly-registered user.
wp-includes/pluggable.php: wp_set_auth_cookie()

Log in a user by setting authentication cookies.
wp-includes/class-wp-widget.php: WP_Widget::get_settings()

Retrieves the settings for all instances of the widget class.
wp-includes/nav-menu.php: _wp_auto_add_pages_to_menu()

Automatically add newly published page objects to menus with that as an option.
wp-includes/nav-menu.php: _wp_menus_changed()

Handle menu config after theme change.
wp-includes/bookmark-template.php: _walk_bookmarks()

The formatted output of a list of bookmarks.
wp-includes/comment.php: wp_handle_comment_submission()

Handles the submission of a comment, usually posted to wp-comments-post.php via a comment form.
wp-includes/comment.php: privacy_ping_filter()

Check whether blog is public before returning sites.
wp-includes/comment.php: trackback()

Send a Trackback.
wp-includes/comment.php: weblog_ping()

Send a pingback.
wp-includes/comment.php: _close_comments_for_old_posts()

Close comments on old posts on the fly, without any extra DB queries. Hooked to the_posts.
wp-includes/comment.php: _close_comments_for_old_post()

Close comments on an old post. Hooked to comments_open and pings_open.
wp-includes/comment.php: generic_ping()

Sends pings to all of the ping site services.
wp-includes/comment.php: wp_new_comment_notify_postauthor()

Send a notification of a new comment to the post author.
wp-includes/comment.php: get_page_of_comment()

Calculate what page number a comment will appear on for comment paging.
wp-includes/comment.php: wp_blacklist_check()

Does comment contain blacklisted characters or words.
wp-includes/comment.php: get_comment_pages_count()

Calculate the total number of comment pages.
wp-includes/class-wp-ajax-response.php: WP_Ajax_Response::send()

Display XML formatted responses.
wp-includes/class-walker-page.php: Walker_Page::start_el()

Outputs the beginning of the current element in the tree.
wp-includes/nav-menu-template.php: _wp_menu_item_classes_by_context()

Add the class property classes for the current context, if applicable.
wp-includes/comment.php: check_comment()

Check whether a comment passes internal checks to be allowed to add.
wp-includes/comment.php: get_default_comment_status()

Gets the default comment status for a post type.
wp-includes/admin-bar.php: wp_admin_bar_edit_menu()

Provide an edit link for posts and terms.
wp-includes/ms-default-constants.php: ms_cookie_constants()

Defines Multisite cookie constants.
wp-includes/cron.php: _get_cron_array()

Retrieve cron info array option.
wp-includes/embed.php: _oembed_rest_pre_serve_request()

Hooks into the REST API output to print XML instead of JSON.
wp-includes/embed.php: get_post_embed_url()

Retrieves the URL to embed a specific post in an iframe.
wp-includes/link-template.php: get_privacy_policy_url()

Retrieves the URL to the privacy policy page.
wp-includes/link-template.php: get_the_privacy_policy_link()

Returns the privacy policy link with formatting, when applicable.
wp-includes/link-template.php: wp_get_shortlink()

Returns a shortlink for a post, page, attachment, or site.
wp-includes/link-template.php: get_avatar_data()

Retrieves default data about the avatar.
wp-includes/link-template.php: wp_get_canonical_url()

Returns the canonical URL for a post.
wp-includes/link-template.php: get_home_url()

Retrieves the URL for a given site where the front end is accessible.
wp-includes/link-template.php: get_site_url()

Retrieves the URL for a given site where ClassicPress application files (e.g. wp-blog-header.php or the wp-admin/ folder) are accessible.
wp-includes/link-template.php: get_comments_pagenum_link()

Retrieves the comments page number link.
wp-includes/link-template.php: get_adjacent_post_link()

Retrieves the adjacent post link.
wp-includes/link-template.php: get_adjacent_post_rel_link()

Retrieves the adjacent post relational link.
wp-includes/link-template.php: get_post_type_archive_link()

Retrieves the permalink for a post type archive.
wp-includes/link-template.php: get_post_type_archive_feed_link()

Retrieves the permalink for a post type archive feed.
wp-includes/link-template.php: get_post_comments_feed_link()

Retrieves the permalink for the post comments feed.
wp-includes/link-template.php: get_author_feed_link()

Retrieves the feed link for a given author.
wp-includes/link-template.php: get_term_feed_link()

Retrieves the feed link for a term.
wp-includes/link-template.php: get_permalink()

Retrieves the full permalink for the current post or post ID.
wp-includes/link-template.php: get_page_link()

Retrieves the permalink for the current page or page ID.
wp-includes/link-template.php: get_attachment_link()

Retrieves the permalink for an attachment.
wp-includes/capabilities.php: map_meta_cap()

Map meta capabilities to primitive capabilities.
wp-includes/class-wp-site.php: WP_Site::get_details()

Retrieves the details for this site.
wp-includes/ms-blogs.php: get_blog_option()

Retrieve option value for a given blog id based on name of option.
wp-includes/class-http.php: WP_Http::block_request()

Block requests through the proxy.
wp-includes/ms-blogs.php: get_blog_details()

Retrieve the details for a blog from the blogs table and blog options.
wp-includes/http.php: wp_http_validate_url()

Validate a URL for safe use in the HTTP API.
wp-includes/user.php: wp_send_user_request()

Send a confirmation request email to confirm an action.
wp-includes/user.php: _wp_privacy_send_request_confirmation_notification()

Notify the site administrator via email when a request is confirmed.
wp-includes/user.php: _wp_privacy_send_erasure_fulfillment_notification()

Notify the user when their erasure request is fulfilled.
wp-includes/user.php: send_confirmation_on_profile_email()

Send a confirmation request email when a change of user email address is attempted.
wp-includes/user.php: register_new_user()

Handles registering a new user.
wp-includes/user.php: wp_insert_user()

Insert a user into the database.
wp-includes/user.php: wp_update_user()

Update a user in the database.
wp-includes/user.php: get_blogs_of_user()

Get the sites a user belongs to.
wp-includes/class-wp-theme.php: WP_Theme::get_allowed_on_site()

Returns array of stylesheet names of themes allowed on the site.
wp-includes/theme.php: check_theme_switched()

Checks if a theme has been changed and runs ‘after_switch_theme’ hook on the next WP load.
wp-includes/theme.php: get_uploaded_header_images()

Get the header images uploaded for the current theme.
wp-includes/theme.php: get_theme_mods()

Retrieve all theme modifications.
wp-includes/theme.php: set_theme_mod()

Update theme modification value for the current theme.
wp-includes/theme.php: remove_theme_mod()

Remove theme modification name from current theme list.
wp-includes/theme.php: remove_theme_mods()

Remove theme modifications option for current theme.
wp-includes/theme.php: get_theme_root_uri()

Retrieve URI for themes directory.
wp-includes/theme.php: get_raw_theme_root()

Get the raw theme root relative to the content directory with no filters applied.
wp-includes/theme.php: switch_theme()

Switches the theme.
wp-includes/theme.php: get_template()

Retrieve name of the current theme.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_newComment()

Create new comment.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_getOptions()

Retrieve blog options value from list.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::blogger_getUsersBlogs()

Retrieve blogs that user owns.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::pingback_ping()

Retrieves a pingback and registers it.
wp-includes/theme.php: get_stylesheet()

Retrieve name of the current stylesheet.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getUsersBlogs()

Retrieve the blogs of the user.
wp-includes/plugin.php: register_uninstall_hook()

Set the uninstallation hook for a plugin.
wp-includes/category-template.php: wp_list_categories()

Display or retrieve the HTML list of categories.
wp-includes/option.php: get_network_option()

Retrieve a network’s option value based on the option name.
wp-includes/option.php: set_transient()

Set/update the value of a transient.
wp-includes/option.php: update_option()

Update the value of an option that was already added.
wp-includes/option.php: add_option()

Add a new option.
wp-includes/option.php: get_transient()

Get the value of a transient.
wp-includes/rewrite.php: url_to_postid()

Examine a URL and try to determine the post ID it represents.
wp-includes/option.php: get_option()

Retrieves an option value based on an option name.
wp-includes/option.php: form_option()

Print option value after sanitizing for forms.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::update_stashed_theme_mod_settings()

Update stashed theme mod settings.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::customize_pane_settings()

Print JavaScript settings for parent window.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::register_controls()

Register some default controls.
wp-includes/rewrite.php: wp_resolve_numeric_slug_conflicts()

Resolve numeric slugs that collide with date permalinks.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::setup_theme()

Start preview and customize theme.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::import_theme_starter_content()

Import theme starter content into the customized state.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::unsanitized_post_values()

Get dirty pre-sanitized setting values in the current customized state.
wp-includes/post-template.php: wp_list_pages()

Retrieve or display list of pages (or hierarchical post type items) in list (li) format.
wp-includes/post-template.php: wp_page_menu()

Displays or retrieves a list of pages with an optional home link.
wp-includes/post-template.php: _wp_link_page()

Helper function for wp_link_pages().
wp-includes/class-wp-rewrite.php: WP_Rewrite::generate_rewrite_rules()

Generates rewrite rules from a permalink structure.
wp-includes/class-wp-rewrite.php: WP_Rewrite::wp_rewrite_rules()

Retrieves the rewrite rules.
wp-includes/class-wp-rewrite.php: WP_Rewrite::init()

Sets up the object’s properties.
wp-includes/class-wp-rewrite.php: WP_Rewrite::set_category_base()

Sets the category base for the category permalink.
wp-includes/class-wp-rewrite.php: WP_Rewrite::set_tag_base()

Sets the tag base for the tag permalink.
wp-includes/class-wp-http-proxy.php: WP_HTTP_Proxy::send_through_proxy()

Whether URL should be sent through the proxy server.
wp-includes/canonical.php: redirect_canonical()

Redirects incoming links to the proper URL based on the site url.
wp-includes/rest-api.php: get_rest_url()

Retrieves the URL to a REST endpoint on a site.
wp-includes/post.php: _publish_post_hook()

Hook to schedule pings and enclosures when a post is published.
wp-includes/post.php: wp_unique_post_slug()

Computes a unique slug for the post, when given the desired slug and some post details.
wp-includes/post.php: wp_set_post_categories()

Set categories for a post.
wp-includes/post.php: wp_insert_post()

Insert or update a post.
wp-includes/post.php: stick_post()

Make a post sticky.
wp-includes/post.php: unstick_post()

Un-stick a post.
wp-includes/post.php: _reset_front_page_settings_for_post()

Reset the page_on_front, show_on_front, and page_for_post settings when a linked page is deleted or trashed.
wp-includes/post.php: is_sticky()

Check if post is sticky.
wp-includes/class-wp-customize-nav-menus.php: WP_Customize_Nav_Menus::customize_register()

Add the customizer settings and controls.
wp-includes/class-wp.php: WP::send_headers()

Sends additional HTTP headers for caching, content type, etc.
wp-includes/ms-functions.php: get_space_allowed()

Returns the upload quota for the current blog.
wp-includes/ms-functions.php: maybe_add_existing_user_to_blog()

Add a new user to a blog by visiting /newbloguser/{key}/.
wp-includes/ms-functions.php: global_terms()

Maintains a canonical list of terms by syncing terms created for each blog with the global terms table.
wp-includes/ms-functions.php: wpmu_welcome_notification()

Notify a user that their blog activation has been successful.
wp-includes/ms-functions.php: wpmu_welcome_user_notification()

Notify a user that their account activation has been successful.
wp-includes/ms-functions.php: wpmu_signup_blog_notification()

Send a confirmation request email to a user when they sign up for a new site. The new site will not become active until the confirmation link is clicked.
wp-includes/ms-functions.php: wpmu_signup_user_notification()

Send a confirmation request email to a user when they sign up for a new user account (without signing up for a site at the same time). The user account will not become active until the confirmation link is clicked.
wp-includes/ms-functions.php: newblog_notify_siteadmin()

Notifies the network admin that a new site has been activated.
wp-includes/class-wp-roles.php: WP_Roles::remove_role()

Remove role by name.
wp-includes/class-wp-roles.php: WP_Roles::get_roles_data()

Gets the available roles data.
wp-includes/formatting.php: esc_textarea()

Escaping for textarea values.
wp-includes/formatting.php: sanitize_option()

Sanitises various option values based on the nature of the option.
wp-includes/formatting.php: wp_trim_words()

Trims text to a certain number of words.
wp-includes/formatting.php: format_for_editor()

Formats text for the editor.
wp-includes/formatting.php: get_gmt_from_date()

Returns a date in the GMT equivalent.
wp-includes/formatting.php: get_date_from_gmt()

Converts a GMT date into the correct format for the blog.
wp-includes/formatting.php: iso8601_to_datetime()

Converts an iso8601 date to MySQL DateTime format used by post_date[_gmt].
wp-includes/formatting.php: convert_smilies()

Convert text equivalent of smilies to images.
wp-includes/formatting.php: balanceTags()

Balances tags if forced to, or if the ‘use_balanceTags’ option is set to true.
wp-includes/formatting.php: wp_check_invalid_utf8()

Checks for invalid UTF8 in a string.
wp-includes/load.php: wp_get_active_and_valid_plugins()

Retrieve an array of active and valid plugin files.
wp-includes/load.php: wp_set_internal_encoding()

Set internal encoding.
wp-includes/feed.php: fetch_feed()

Build SimplePie object based on RSS or Atom feed from URL.
wp-includes/update.php: wp_update_plugins()

Check plugin versions against the latest versions hosted on WordPress.org.
wp-includes/update.php: wp_update_themes()

Check theme versions against the latest versions hosted on WordPress.org.
wp-includes/feed.php: get_the_category_rss()

Retrieve all of the post categories, formatted for use in feeds.
wp-includes/taxonomy.php: wp_get_split_terms()

Get data about terms that previously shared a single term_id, but have since been split.
wp-includes/taxonomy.php: wp_term_is_shared()

Determine whether a term is shared between multiple taxonomies.
wp-includes/taxonomy.php: _wp_batch_split_terms()

Splits a batch of shared taxonomy terms.
wp-includes/taxonomy.php: wp_unique_term_slug()

Will make slug unique, if it isn’t already.
wp-includes/taxonomy.php: wp_delete_term()

Removes a term from the database.
wp-includes/taxonomy.php: delete_term_meta()

Removes metadata matching criteria from a term.
wp-includes/taxonomy.php: get_term_meta()

Retrieves metadata for a term.
wp-includes/taxonomy.php: update_term_meta()

Updates term metadata.
wp-includes/taxonomy.php: update_termmeta_cache()

Updates metadata cache for list of term IDs.
wp-includes/taxonomy.php: has_term_meta()

Get all meta data, including meta IDs, for the given term ID.
wp-includes/taxonomy.php: add_term_meta()

Adds metadata to a term.
wp-includes/revision.php: _wp_upgrade_revisions_of_post()

Upgrade the revisions author, add the current post as a revision and set the revisions version to 1
wp-includes/taxonomy.php: create_initial_taxonomies()

Creates the initial taxonomies.
wp-includes/comment-template.php: wp_list_comments()

List comments.
wp-includes/comment-template.php: comment_form()

Outputs a complete commenting form for use within a template.
wp-includes/comment-template.php: comments_template()

Load the comment template specified in $file.
wp-includes/comment-template.php: get_comment_reply_link()

Retrieve HTML content for reply to comment link.
wp-includes/comment-template.php: get_post_reply_link()

Retrieve HTML content for reply to post link.
wp-includes/comment-template.php: get_comment_time()

Retrieve the comment time of the current comment.
wp-includes/comment-template.php: get_trackback_url()

Retrieve The current post’s trackback URL.
wp-includes/comment-template.php: get_comment_link()

Retrieve the link to a given comment.
wp-includes/comment-template.php: get_comment_date()

Retrieve the comment date of the current comment.
wp-includes/widgets.php: wp_widgets_init()

Registers all of the default ClassicPress widgets on startup.
wp-includes/widgets.php: wp_convert_widget_settings()

Convert the widget settings from single to multi-widget format.
wp-includes/widgets.php: wp_widget_rss_output()

Display the RSS entries in a list.
wp-includes/widgets.php: is_dynamic_sidebar()

Whether the dynamic sidebar is enabled and used by theme.
wp-includes/widgets.php: wp_get_sidebars_widgets()

Retrieve full list of sidebars and their widget instance IDs.
wp-includes/class-wp-customize-setting.php: WP_Customize_Setting::get_root_value()

Get the root value for a setting, especially for multidimensional ones.
wp-includes/functions.php: wp_site_admin_email_change_notification()

Send an email to the old site admin email address when the site admin email address changes.
wp-includes/functions.php: wp_timezone_override_offset()

gmt_offset modification for smart timezone handling.
wp-includes/functions.php: smilies_init()

Convert smiley code to the icon graphic file equivalent.
wp-includes/functions.php: wp_send_json()

Send a JSON response back to an Ajax request.
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/functions.php: do_robots()

Display the robots.txt file content.
wp-admin/custom-background.php: Custom_Background::handle_upload()

Handle an Image upload for the background image.
wp-admin/custom-background.php: Custom_Background::wp_set_background_image()
wp-includes/functions.php: current_time()

Retrieve the current time based on specified type.
wp-includes/functions.php: date_i18n()

Retrieve the date in localized format, based on timestamp.
wp-includes/functions.php: get_weekstartend()

Get the week start and end from the datetime or date string from MySQL.
wp-admin/includes/class-wp-screen.php: WP_Screen::render_meta_boxes_preferences()

Render the meta boxes preferences.
wp-admin/includes/class-wp-site-icon.php: WP_Site_Icon::delete_attachment_data()

Deletes the Site Icon when the image file is deleted.
wp-admin/includes/class-wp-site-icon.php: WP_Site_Icon::get_post_metadata()

Adds custom image sizes when meta data for an image is requested, that happens to be used as Site Icon.
wp-admin/includes/image.php: wp_generate_attachment_metadata()

Generate post thumbnail attachment meta data.
wp-admin/includes/class-wp-plugins-list-table.php: WP_Plugins_List_Table::prepare_items()
wp-admin/includes/misc.php: update_option_new_admin_email()

Send a confirmation request email when a change of site admin email address is attempted.
wp-admin/includes/misc.php: WP_Privacy_Policy_Content::text_change_check()

Quick check if any privacy info has changed.
wp-admin/includes/misc.php: WP_Privacy_Policy_Content::_policy_page_updated()

Update the cached policy info when the policy page is updated.
wp-admin/includes/misc.php: WP_Privacy_Policy_Content::get_suggested_policy_text()

Check for updated, added or removed privacy policy information from plugins.
wp-admin/includes/misc.php: WP_Privacy_Policy_Content::notice()

Add a notice with a link to the guide when editing the privacy policy page.
wp-admin/includes/misc.php: update_recently_edited()

Update the “recently-edited” file for the plugin or theme editor.
wp-admin/includes/media.php: media_upload_max_image_resize()

Displays the checkbox to scale images.
wp-admin/includes/media.php: wp_media_insert_url_form()

Creates the form for external url
wp-admin/includes/media.php: media_upload_form()

Outputs the legacy media upload form.
wp-admin/includes/media.php: get_attachment_fields_to_edit()

Retrieves the attachment fields to edit form fields.
wp-admin/includes/class-wp-ms-themes-list-table.php: WP_MS_Themes_List_Table::column_name()

Handles the name column output.
wp-admin/includes/class-wp-comments-list-table.php: WP_Comments_List_Table::__construct()

Constructor.
wp-admin/includes/template.php: iframe_header()

Generic Iframe header for use with Thickbox
wp-admin/includes/template.php: _post_states()
wp-admin/includes/template.php: _media_states()
wp-admin/includes/template.php: _wp_admin_html_begin()
wp-admin/includes/template.php: get_settings_errors()

Fetch settings errors registered by add_settings_error()
wp-admin/includes/image-edit.php: wp_save_image()

Saves image to post along with enqueued changes in $_REQUEST[‘history’]
wp-admin/includes/schema.php: populate_network()

Populate network settings.
wp-admin/includes/network.php: allow_subdomain_install()

Allow subdomain installation
wp-admin/includes/network.php: get_clean_basedomain()

Get base domain of network.
wp-admin/includes/network.php: network_step1()

Prints step 1 for Network installation process.
wp-admin/includes/network.php: network_step2()

Prints step 2 for Network installation process.
wp-admin/includes/nav-menu.php: wp_nav_menu_update_menu_items()

Saves nav menu items
wp-admin/includes/options.php: options_reading_blog_charset()

Render the site charset setting.
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::__construct()

Constructor.
wp-admin/includes/nav-menu.php: wp_nav_menu_item_post_type_meta_box()

Displays a meta box for a post type menu item.
wp-admin/includes/bookmark.php: wp_insert_link()

Inserts/updates links into/in the database.
wp-admin/includes/bookmark.php: wp_set_link_cats()

Update link with the specified link categories.
wp-admin/includes/ajax-actions.php: wp_ajax_delete_inactive_widgets()

Ajax handler for removing inactive widgets.
wp-admin/includes/upgrade.php: maybe_disable_link_manager()

Disables the Link Manager on upgrade if, at the time of upgrade, no links exist in the DB.
wp-admin/includes/upgrade.php: wp_install_defaults()

Creates the initial content for a newly-installed site.
wp-admin/includes/upgrade.php: wp_install_maybe_enable_pretty_permalinks()

Maybe enable pretty permalinks on installation.
wp-admin/includes/meta-boxes.php: page_attributes_meta_box()

Display page attributes form fields.
wp-admin/includes/class-wp-upgrader.php: WP_Upgrader::create_lock()

Creates a lock using ClassicPress options.
wp-admin/includes/class-wp-automatic-updater.php: WP_Automatic_Updater::send_email()

Sends an email upon the completion or failure of a background core update.
wp-admin/includes/user.php: WP_Privacy_Requests_Table::get_timestamp_as_date()

Convert timestamp for display.
wp-admin/includes/plugin.php: add_security_page()

Add submenu page to the Security main menu.
wp-admin/includes/plugin.php: activate_plugin()

Attempts activation of plugin in a “sandbox” and redirects on success.
wp-admin/includes/plugin.php: deactivate_plugins()

Deactivate a single plugin or multiple plugins.
wp-admin/includes/plugin.php: validate_active_plugins()

Validate active plugins
wp-admin/includes/plugin.php: is_uninstallable_plugin()

Whether the plugin can be uninstalled.
wp-admin/includes/plugin.php: uninstall_plugin()

Uninstall a single plugin.
wp-admin/includes/export.php: export_wp()

Generates the WXR export file for download.
wp-admin/includes/plugin.php: is_plugin_active()

Check whether a plugin is active.
wp-admin/includes/file.php: request_filesystem_credentials()

Displays a form to the user to request for their FTP/SSH details in order to connect to the filesystem.
wp-admin/includes/file.php: wp_privacy_send_personal_data_export_email()

Send an email to the user with a link to the personal data export file
wp-admin/includes/class-wp-themes-list-table.php: WP_Themes_List_Table::prepare_items()
wp-admin/includes/class-wp-ms-sites-list-table.php: WP_MS_Sites_List_Table::column_blogname()

Handles the site name column output.
wp-admin/includes/file.php: get_home_path()

Get the absolute filesystem path to the root of the ClassicPress installation
wp-admin/includes/file.php: wp_edit_theme_plugin_file()

Attempt to edit a file for a theme or plugin.
wp-admin/includes/post.php: get_sample_permalink_html()

Returns the HTML of the sample permalink slug editor.
wp-admin/includes/post.php: _fix_attachment_links()

Replace hrefs of attachment anchors with up-to-date permalinks.
wp-admin/includes/post.php: wp_edit_posts_query()

Run the wp query to fetch the posts for listing on the edit posts page
wp-admin/includes/post.php: get_default_post_to_edit()

Default post information to use when populating the “Write Post” form.
wp-admin/includes/dashboard.php: wp_dashboard_rss_output()

Display generic dashboard RSS widget feed.
wp-admin/includes/dashboard.php: wp_dashboard_cached_rss_widget()

Checks to see if all of the feed url in $check_urls are cached.
wp-admin/includes/dashboard.php: wp_dashboard_rss_control()

The RSS dashboard widget control.
wp-admin/includes/dashboard.php: wp_dashboard_right_now()

Dashboard widget that displays some basic stats about the site.
wp-admin/includes/revision.php: wp_prepare_revisions_for_js()

Prepare revisions for JavaScript.
wp-admin/includes/ms.php: wpmu_delete_blog()

Delete a site.
wp-admin/includes/ms.php: upload_space_setting()

Displays the site upload space quota setting form on the Edit Site Settings screen.
wp-trackback.php: trackback_response()

Response to a trackback.
Show 301 more used by Hide more used by

Changelog

Changelog
Version Description
WP-1.5.0 Introduced.