Title: Version 4.4
Author: Subrata Sarkar
Published: February 18, 2019

---

# Version 4.4

## In this article

 * [Highlights](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#highlights)
    - [The Finer Points](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#the-finer-points)
    - [For Developers](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#for-developers)
 * [What’s New](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#whats-new)
    - [General](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#general)
    - [Posts](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#posts)
    - [Media](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#media)
    - [Comments](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#comments)
    - [Appearance](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#appearance)
    - [Users](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#users)
    - [Install Process](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#install-process)
    - [Multisite](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#multisite)
    - [Accessibility](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#accessibility)
 * [Under The Hood](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#under-the-hood)
    - [General](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#general-2)
    - [Embeds](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#embeds)
    - [JavaScript](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#javascript)
    - [Bug Fixes](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#bug-fixes)
    - [Multisite](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#multisite-2)
    - [Classes](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#classes)
    - [Functions](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#functions)
    - [Actions & Filters](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#actions-filters)
    - [External Libraries](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#external-libraries)
    - [Miscellaneous](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#miscellaneous)

[ Back to top](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#wp--skip-link--target)

On December 8, 2015, WordPress **Version 4.4**, named for jazz musician Clifford
Brown, was released to the public. For more information on this enhancement and 
bug-fix release, read the [WordPress Blog](https://wordpress.org/news/2015/12/clifford/),
and see the [Changelog for 4.4](https://codex.wordpress.org/Changelog/4.4).

For **Version 4.4**, the database version (**db_version** in **wp_options**) changed
to 35700, and the [Trac](https://core.trac.wordpress.org/) revision was 35842.

 * [View Closed Tickets](https://trac.wordpress.org/query?status=closed&milestone=4.4)

## 󠀁[Highlights](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#highlights)󠁿

[⌊twenty-sixteen White Desktop⌉⌊twenty-sixteen White Desktop⌉[

 * **New Default Theme – [Twenty Sixteen](https://wordpress.org/themes/twentysixteen/)**
    - Modern take on the classic blog design
    - Flexible header and fun color schemes will make your content shine
    - Mobile-first and responsive

### 󠀁[The Finer Points](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#the-finer-points)󠁿

[⌊Responsive devices⌉⌊Responsive devices⌉[

 * **Responsive images:**

WordPress now takes a smarter approach to displaying appropriate image sizes on 
any device, ensuring a perfect fit every time. You don’t need to do anything to 
your theme, it just works.

[⌊WP embed preview⌉⌊WP embed preview⌉[

 * **Embed your WordPress content:**

Now you can embed your posts on other sites, even other WordPress sites. Simply 
drop a post URL into the editor and see an instant embed preview, complete with 
the title, excerpt, and featured image if you’ve set one. We’ll even include your
site icon and links for comments and sharing.

[[

 * **Even more [embed](https://codex.wordpress.org/Embeds) providers:**

In addition to post embeds, WordPress 4.4 also adds support for five new oEmbed 
providers: Cloudup, Reddit Comments, ReverbNation, Speaker Deck, and VideoPress.

### 󠀁[For Developers](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#for-developers)󠁿

 * **REST API infrastructure:** Infrastructure for the REST API has been integrated
   into core, the first part of a multi-stage rollout. Inclusion of core endpoints
   is targeted for an upcoming release. To get a sneak peek of the core endpoints,
   and for more information on extending the REST API, check out the official [WordPress REST API](https://wordpress.org/plugins/rest-api/)
   plugin.
 * **Term meta:** Terms now support metadata, just like posts. See [add_term_meta()](https://developer.wordpress.org/reference/functions/add_term_meta/),
   [get_term_meta()](https://developer.wordpress.org/reference/functions/get_term_meta/),
   and [update_term_meta()](https://developer.wordpress.org/reference/functions/update_term_meta/)
   for more information.
 * **Comment query improvements:** Comment queries now have cache handling to improve
   performance. New arguments in [WP_Comment_Query](https://developer.wordpress.org/reference/classes/wp_comment_query)
   make crafting robust comment queries simpler.
 * **Term, comment, and network objects:** New [WP_Term](https://developer.wordpress.org/reference/classes/wp_term/),
   [WP_Comment](https://developer.wordpress.org/reference/classes/wp_comment/), 
   and [WP_Network](https://developer.wordpress.org/reference/classes/wp_network/)
   objects make interacting with terms, comments, and networks more predictable 
   and intuitive in code.

## 󠀁[What’s New](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#whats-new)󠁿

### 󠀁[General](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#general)󠁿

 * [Developer reference](https://developer.wordpress.org/reference) – Improvements
   to inline code documentation.
 * [i18n support](https://core.trac.wordpress.org/query?component=I18N&resolution=fixed&milestone=4.4&col=id&col=summary&col=owner&col=reporter&order=summary)–
   Improvements to translation strings all over the core.
 * Admin page headings were adjusted from H3 to H2 tags to reinforce page hierarchy
 * Improvements to how list tables are displayed on all size screens

### 󠀁[Posts](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#posts)󠁿

 * The post/page permalink UI was simplified, linking the permalink and removing
   the “View” button

### 󠀁[Media](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#media)󠁿

### 󠀁[Comments](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#comments)󠁿

 * The “View Comment” link was relocated from the Status meta box in the comment-
   editing screen
 * Many comment functions can now accept a full object instead of ‘comment_ID’ to
   reduce cache/db lookups
 * Orphaned comments now fall back to the ‘edit_posts’ capability

### 󠀁[Appearance](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#appearance)󠁿

 * Site icons will now fall back to the ‘full’ size URL when the ‘thumbnail’ size
   doesn’t exist

### 󠀁[Users](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#users)󠁿

### 󠀁[Install Process](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#install-process)󠁿

### 󠀁[Multisite](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#multisite)󠁿

 * The language chooser was added to the new site form on wp-signup.php
 * Sites may no longer be created with the following reserved slugs: wp-admin, wp-
   content, wp-includes, or wp-json

### 󠀁[Accessibility](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#accessibility)󠁿

## 󠀁[Under The Hood](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#under-the-hood)󠁿

### 󠀁[General](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#general-2)󠁿

 * Unclosed HTML elements in shortcode attributes were disallowed
 * HTML was removed from all translatable text strings
 * Rewrite rules are now flushed on theme switch
 * Most core classes were moved to their own files

### 󠀁[Embeds](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#embeds)󠁿

 * Add oEmbed support for Cloudup.
 * Add oEmbed support for Reddit Comments.
 * Add oEmbed support for ReverbNation.
 * Add oEmbed support for Speaker Deck.
 * Add oEmbed support for VideoPress.
 * Remove oEmbed support for Blip.

### 󠀁[JavaScript](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#javascript)󠁿

 * Customizer: Ensure persistence of unchanged active state for controls, sections,
   and panels
 * Customizer: Fixed logic for determining the container element when focusing on
   a panel, section, or control
 * Customizer: Fixed clearing of a color control’s setting by using proper empty
   value

### 󠀁[Bug Fixes](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#bug-fixes)󠁿

 * Fail gracefully when checking mapped capabilities against unregistered post types
 * Visibility was restored for the Tags auto-suggest tooltip in Quick Edit
 * The $public_only parameter was added to [count_user_posts()](https://developer.wordpress.org/reference/functions/count_user_posts)
 * Cron: Events are now rejected when the provided $timestamp value is not a valid
   timestamp
 * Users with no role are now redirected to the home page on login instead of their
   profile-editing screen

### 󠀁[Multisite](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#multisite-2)󠁿

 * A network can now be retrieved by its ID through [WP_Network::get_instance()](https://developer.wordpress.org/reference/classes/wp_network/)
 * A network can now be created or completed by passing arguments to [WP_Network](https://developer.wordpress.org/reference/classes/wp_network/)
 * Network-level capabilities were clarified and some long-time bugs were fixed

### 󠀁[Classes](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#classes)󠁿

#### 󠀁[What’s New](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#whats-new-2)󠁿

 * [WP_Comment](https://developer.wordpress.org/reference/classes/wp_comment)

 * [WP_Comment_Query->$found_comments](https://developer.wordpress.org/reference/classes/wp_comment_query/)
 * [WP_Comment_Query->$max_num_pages](https://developer.wordpress.org/reference/classes/wp_comment_query/)
 * [WP_Comment_Query->$meta_query_clauses](https://developer.wordpress.org/reference/classes/wp_comment_query/)
 * [WP_Comment_Query->$sql_clauses](https://developer.wordpress.org/reference/classes/wp_comment_query/)
 * [WP_Comment_Query::fill_descendants()](https://developer.wordpress.org/reference/classes/wp_comment_query/fill_descendants/)
 * [WP_Comment_Query::get_comment_ids()](https://developer.wordpress.org/reference/classes/wp_comment_query/get_comment_ids/)

 * [WP_Customize_Manager->$autofocus](https://developer.wordpress.org/reference/classes/wp_customize_manager/)
 * [WP_Customize_Manager->$preview_url](https://developer.wordpress.org/reference/classes/wp_customize_manager/)
 * [WP_Customize_Manager->$return_url](https://developer.wordpress.org/reference/classes/wp_customize_manager/)
 * [WP_Customize_Manager::customize_pane_settings()](https://developer.wordpress.org/reference/classes/wp_customize_manager/customize_pane_settings/)
 * [WP_Customize_Manager::get_autofocus()](https://developer.wordpress.org/reference/classes/wp_customize_manager/get_autofocus)
 * [WP_Customize_Manager::get_document_title_template()](https://developer.wordpress.org/reference/classes/wp_customize_manager/get_document_title_template)
 * [WP_Customize_Manager::get_preview_url()](https://developer.wordpress.org/reference/classes/wp_customize_manager/get_preview_url/)
 * [WP_Customize_Manager::get_return_url()](https://developer.wordpress.org/reference/classes/wp_customize_manager/get_return_url)
 * [WP_Customize_Manager::is_ios()](https://developer.wordpress.org/reference/classes/wp_customize_manageris_ios/)
 * [WP_Customize_Manager::set_autofocus()](https://developer.wordpress.org/reference/classes/wp_customize_managerset_autofocus/)
 * [WP_Customize_Manager::set_preview_url()](https://developer.wordpress.org/reference/classes/wp_customize_manager/set_preview_url/)
 * [WP_Customize_Manager::set_return_url()](https://developer.wordpress.org/reference/classes/wp_customize_manager/set_return_url/)

 * [WP_Customize_Setting->$is_multidimensional_aggregated](https://developer.wordpress.org/reference/classes/wp_customize_setting/)
 * [WP_Customize_Setting->$is_previewed](https://developer.wordpress.org/reference/classes/wp_customize_setting/)
 * [WP_Customize_Setting::$aggregated_multidimensionals](https://developer.wordpress.org/reference/classes/wp_customize_setting/)
 * [WP_Customize_Setting::_multidimensional_preview_filter()](https://developer.wordpress.org/reference/classes/wp_customize_setting/_multidimensional_preview_filter)
 * [WP_Customize_Setting::aggregate_multidimensional()](https://developer.wordpress.org/reference/classes/wp_customize_setting/aggregate_multidimensional/)
 * [get_root_value/ WP_Customize_Setting::get_root_value()](https://developer.wordpress.org/reference/classes/wp_customize_setting)
 * [id_data/ WP_Customize_Setting::id_data()](https://developer.wordpress.org/reference/classes/wp_customize_setting)
 * [set_root_value/ WP_Customize_Setting::set_root_value()](https://developer.wordpress.org/reference/classes/wp_customize_setting)

 * [WP_Customize_Widgets::get_widget_control_parts()](https://developer.wordpress.org/reference/classes/wp_customize_widgets/get_widget_control_parts/)
 * [WP_Customize_Widgets::is_panel_active()](https://developer.wordpress.org/reference/classes/wp_customize_widgets/is_panel_active/)
 * [WP_Filesystem_SSH2::sftp_path()](https://developer.wordpress.org/reference/classes/wp_filesystem_ssh2/sftp_path/)
 * [WP_HTTP_Response](https://developer.wordpress.org/reference/classes/wp_http_response)
 * [WP_List_Table::get_primary_column()](https://developer.wordpress.org/reference/classes/wp_list_table/get_primary_column/)
 * [WP_Locale->$start_of_week](https://developer.wordpress.org/reference/classes/wp_locale)
 * [WP_MS_Sites_List_Table::column_id()](https://developer.wordpress.org/reference/classes/wp_ms_sites_list_table/column_id/)
 * [WP_MS_Users_List_Table::column_id()](https://developer.wordpress.org/reference/classes/wp_ms_users_list_table/column_id/)
 * [WP_Media_List_Table->$comment_pending_count](https://developer.wordpress.org/reference/classes/wp_media_list_table)
 * [WP_Network](https://developer.wordpress.org/reference/classes/wp_network)
 * [WP_Posts_List_Table::get_edit_link()](https://developer.wordpress.org/reference/classes/wp_posts_list_table/get_edit_link/)

 * [WP_Query->$is_embed](https://developer.wordpress.org/reference/classes/wp_query)
 * [WP_Query->$updated_comment_meta_cache](https://developer.wordpress.org/reference/classes/wp_query)
 * [WP_Query->$updated_term_meta_cache](https://developer.wordpress.org/reference/classes/wp_query)
 * [WP_Query::is_embed()](https://developer.wordpress.org/reference/classes/wp_queryis_embed/)
 * [WP_Query::lazyload_comment_meta()](https://developer.wordpress.org/reference/classes/wp_query/lazyload_comment_meta/)
 * [WP_Query::lazyload_term_meta()](https://developer.wordpress.org/reference/classes/wp_query/lazyload_term_meta/)
 * [WP_REST_Request](https://developer.wordpress.org/reference/classes/wp_rest_request)
 * [WP_REST_Response](https://developer.wordpress.org/reference/classes/wp_rest_response)
 * [WP_REST_Server](https://developer.wordpress.org/reference/classes/wp_rest_server)

 * [WP_Screen->$_screen_reader_content](https://developer.wordpress.org/reference/classes/wp_screen)
 * [WP_Screen::get_screen_reader_content()](https://developer.wordpress.org/reference/classes/wp_screen/get_screen_reader_content/)
 * [WP_Screen::get_screen_reader_text()](https://developer.wordpress.org/reference/classes/wp_screen/get_screen_reader_text/)
 * [WP_Screen::remove_screen_reader_content()](https://developer.wordpress.org/reference/classes/wp_screen/remove_screen_reader_content/)
 * [WP_Screen::render_list_table_columns_preferences()](https://developer.wordpress.org/reference/classes/wp_screen/render_list_table_columns_preferences/)
 * [WP_Screen::render_meta_boxes_preferences()](https://developer.wordpress.org/reference/classes/wp_screen/render_meta_boxes_preferences/)
 * [WP_Screen::render_screen_reader_content()](https://developer.wordpress.org/reference/classes/wp_screen/render_screen_reader_content/)
 * [WP_Screen::render_view_mode()](https://developer.wordpress.org/reference/classes/wp_screen/render_view_mode/)
 * [WP_Screen::set_screen_reader_content()](https://developer.wordpress.org/reference/classes/wp_screen/set_screen_reader_content/)
 * [WP_Term](https://developer.wordpress.org/reference/classes/wp_term)
 * [>$update WP_Theme](https://developer.wordpress.org/reference/classes/wp_theme-)

 * [WP_User::__unset()](https://developer.wordpress.org/reference/classes/wp_user::__unset())
 * [>$request WP_User_Query](https://developer.wordpress.org/reference/classes/wp_user_query-)
 * [WP_User_Query::fill_query_vars()](https://developer.wordpress.org/reference/classes/wp_user_query/fill_query_vars/)
 * [WP_Users_List_Table::get_role_list()](https://developer.wordpress.org/reference/classes/wp_users_list_table/get_role_list/)
 * [WP_Widget_Calendar::$instance](https://developer.wordpress.org/reference/classes/wp_widget_calendar)
 * [WP_Widget_Tag_Cloud::_get_current_taxonomy()](https://developer.wordpress.org/reference/classes/wp_widget_tag_cloud/_get_current_taxonomy/)
 * [WP_oEmbed_Controller](https://developer.wordpress.org/reference/classes/wp_oembed_controller)
 * [wpdb->$termmeta](https://developer.wordpress.org/reference/classes/wpdb)

#### 󠀁[Deprecated](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#deprecated)󠁿

### 󠀁[Functions](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#functions)󠁿

#### 󠀁[What’s New](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#whats-new-3)󠁿

 * [_prime_comment_caches()](https://developer.wordpress.org/reference/functions/_prime_comment_caches)
 * [add_network_option()](https://developer.wordpress.org/reference/functions/add_network_option)
 * [add_term_meta()](https://developer.wordpress.org/reference/functions/add_term_meta)
 * [delete_network_option()](https://developer.wordpress.org/reference/functions/delete_network_option)
 * [delete_term_meta()](https://developer.wordpress.org/reference/functions/delete_term_meta)
 * [enqueue_embed_scripts()](https://developer.wordpress.org/reference/functions/enqueue_embed_scripts)
 * [get_header_image_tag()](https://developer.wordpress.org/reference/functions/get_header_image_tag)
 * [get_html_split_regex()](https://developer.wordpress.org/reference/functions/get_html_split_regex)
 * [get_network_option()](https://developer.wordpress.org/reference/functions/get_network_option)
 * [get_oembed_endpoint_url()](https://developer.wordpress.org/reference/functions/get_oembed_endpoint_url)
 * [get_oembed_response_data()](https://developer.wordpress.org/reference/functions/get_oembed_response_data)
 * [get_oembed_response_data_rich()](https://developer.wordpress.org/reference/functions/get_oembed_response_data_rich)
 * [get_password_reset_key()](https://developer.wordpress.org/reference/functions/get_password_reset_key)
 * [get_post_embed_html()](https://developer.wordpress.org/reference/functions/get_post_embed_html)
 * [get_post_embed_url()](https://developer.wordpress.org/reference/functions/get_post_embed_url)
 * [get_preview_post_link()](https://developer.wordpress.org/reference/functions/get_preview_post_link)
 * [get_rest_url()](https://developer.wordpress.org/reference/functions/get_rest_url)
 * [get_shortcode_atts_regex()](https://developer.wordpress.org/reference/functions/get_shortcode_atts_regex)
 * [get_subdirectory_reserved_names()](https://developer.wordpress.org/reference/functions/get_subdirectory_reserved_names)
 * [get_term_meta()](https://developer.wordpress.org/reference/functions/get_term_meta)
 * [get_the_author_posts_link()](https://developer.wordpress.org/reference/functions/get_the_author_posts_link)
 * [get_the_comments_navigation()](https://developer.wordpress.org/reference/functions/get_the_comments_navigation)
 * [get_the_comments_pagination()](https://developer.wordpress.org/reference/functions/get_the_comments_pagination)
 * [get_the_post_thumbnail_url()](https://developer.wordpress.org/reference/functions/get_the_post_thumbnail_url)
 * [is_embed()](https://developer.wordpress.org/reference/functions/is_embed)
 * [is_post_type_viewable()](https://developer.wordpress.org/reference/functions/is_post_type_viewable)
 * [is_registered_sidebar()](https://developer.wordpress.org/reference/functions/is_registered_sidebar)
 * [map_deep()](https://developer.wordpress.org/reference/functions/map_deep)
 * [print_embed_comments_button()](https://developer.wordpress.org/reference/functions/print_embed_comments_button)
 * [print_embed_scripts()](https://developer.wordpress.org/reference/functions/print_embed_scripts)
 * [print_embed_sharing_button()](https://developer.wordpress.org/reference/functions/print_embed_sharing_button)
 * [print_embed_sharing_dialog()](https://developer.wordpress.org/reference/functions/print_embed_sharing_dialog)
 * [print_embed_styles()](https://developer.wordpress.org/reference/functions/print_embed_styles)
 * [register_rest_route()](https://developer.wordpress.org/reference/functions/register_rest_route)
 * [rest_api_default_filters()](https://developer.wordpress.org/reference/functions/rest_api_default_filters)
 * [rest_api_init()](https://developer.wordpress.org/reference/functions/rest_api_init)
 * [rest_api_loaded()](https://developer.wordpress.org/reference/functions/rest_api_loaded)
 * [rest_api_register_rewrites()](https://developer.wordpress.org/reference/functions/rest_api_register_rewrites)
 * [rest_cookie_check_errors()](https://developer.wordpress.org/reference/functions/rest_cookie_check_errors)
 * [rest_cookie_collect_status()](https://developer.wordpress.org/reference/functions/rest_cookie_collect_status)
 * [rest_do_request()](https://developer.wordpress.org/reference/functions/rest_do_request)
 * [rest_ensure_request()](https://developer.wordpress.org/reference/functions/rest_ensure_request)
 * [rest_ensure_response()](https://developer.wordpress.org/reference/functions/rest_ensure_response)
 * [rest_get_date_with_gmt()](https://developer.wordpress.org/reference/functions/rest_get_date_with_gmt)
 * [rest_get_url_prefix()](https://developer.wordpress.org/reference/functions/rest_get_url_prefix)
 * [rest_handle_deprecated_argument()](https://developer.wordpress.org/reference/functions/rest_handle_deprecated_argument)
 * [rest_handle_deprecated_function()](https://developer.wordpress.org/reference/functions/rest_handle_deprecated_function)
 * [rest_handle_options_request()](https://developer.wordpress.org/reference/functions/rest_handle_options_request)
 * [rest_output_link_header()](https://developer.wordpress.org/reference/functions/rest_output_link_header)
 * [rest_output_link_wp_head()](https://developer.wordpress.org/reference/functions/rest_output_link_wp_head)
 * [rest_output_rsd()](https://developer.wordpress.org/reference/functions/rest_output_rsd)
 * [rest_parse_date()](https://developer.wordpress.org/reference/functions/rest_parse_date)
 * [rest_send_allow_header()](https://developer.wordpress.org/reference/functions/rest_send_allow_header)
 * [rest_send_cors_headers()](https://developer.wordpress.org/reference/functions/rest_send_cors_headers)
 * [rest_url()](https://developer.wordpress.org/reference/functions/rest_url)
 * [signup_get_available_languages()](https://developer.wordpress.org/reference/functions/signup_get_available_languages)
 * [strip_fragment_from_url()](https://developer.wordpress.org/reference/functions/strip_fragment_from_url)
 * [stripslashes_from_strings_only()](https://developer.wordpress.org/reference/functions/stripslashes_from_strings_only)
 * [the_comments_navigation()](https://developer.wordpress.org/reference/functions/the_comments_navigation)
 * [the_comments_pagination()](https://developer.wordpress.org/reference/functions/the_comments_pagination)
 * [the_excerpt_embed()](https://developer.wordpress.org/reference/functions/the_excerpt_embed)
 * [the_header_image_tag()](https://developer.wordpress.org/reference/functions/the_header_image_tag)
 * [the_post_thumbnail_url()](https://developer.wordpress.org/reference/functions/the_post_thumbnail_url)
 * [update_network_option()](https://developer.wordpress.org/reference/functions/update_network_option)
 * [update_term_meta()](https://developer.wordpress.org/reference/functions/update_term_meta)
 * [update_termmeta_cache()](https://developer.wordpress.org/reference/functions/update_termmeta_cache)
 * [urldecode_deep()](https://developer.wordpress.org/reference/functions/urldecode_deep)
 * [wp_ajax_delete_inactive_widgets()](https://developer.wordpress.org/reference/functions/wp_ajax_delete_inactive_widgets)
 * [wp_ajax_generate_password()](https://wordpress.org/documentation/wordpress-version/version-4-4/ht_tps://developer.wordpress.org/reference/functions/wp_ajax_generate_password?output_format=md)
 * [wp_ajax_save_wporg_username()](https://developer.wordpress.org/reference/functions/wp_ajax_save_wporg_username)
 * [wp_calculate_image_sizes()](https://developer.wordpress.org/reference/functions/wp_calculate_image_sizes)
 * [wp_calculate_image_srcset()](https://developer.wordpress.org/reference/functions/wp_calculate_image_srcset)
 * [wp_embed_excerpt_attachment()](https://developer.wordpress.org/reference/functions/wp_embed_excerpt_attachment)
 * [wp_embed_excerpt_attachment()](https://developer.wordpress.org/reference/functions/wp_embed_excerpt_more)
 * [wp_filter_oembed_result()](https://developer.wordpress.org/reference/functions/wp_filter_oembed_result)
 * [wp_get_attachment_image_sizes()](https://developer.wordpress.org/reference/functions/wp_get_attachment_image_sizes)
 * [wp_get_attachment_image_srcset()](https://developer.wordpress.org/reference/functions/wp_get_attachment_image_srcset)
 * [wp_get_attachment_image_url()](https://developer.wordpress.org/reference/functions/wp_get_attachment_image_url)
 * [wp_get_document_title()](https://developer.wordpress.org/reference/functions/wp_get_document_title)
 * [wp_get_server_protocol()](https://developer.wordpress.org/reference/functions/wp_get_server_protocol)
 * [wp_get_users_with_no_role()](https://developer.wordpress.org/reference/functions/wp_get_users_with_no_role)
 * [wp_handle_comment_submission()](https://developer.wordpress.org/reference/functions/wp_handle_comment_submission)
 * [wp_image_add_srcset_and_sizes()](https://developer.wordpress.org/reference/functions/wp_image_add_srcset_and_sizes)
 * [wp_installing()](https://developer.wordpress.org/reference/functions/wp_installing)
 * [wp_is_numeric_array()](https://developer.wordpress.org/reference/functions/wp_is_numeric_array)
 * [wp_make_content_images_responsive()](https://developer.wordpress.org/reference/functions/wp_make_content_images_responsive)
 * [wp_maybe_decline_date()](https://developer.wordpress.org/reference/functions/wp_maybe_decline_date)
 * [wp_new_comment_notify_moderator()](https://developer.wordpress.org/reference/functions/wp_new_comment_notify_moderator)
 * [wp_new_comment_notify_postauthor()](https://developer.wordpress.org/reference/functions/wp_new_comment_notify_postauthor)
 * [wp_oembed_add_discovery_links()](https://developer.wordpress.org/reference/functions/wp_oembed_add_discovery_links)
 * [wp_oembed_add_host_js()](https://developer.wordpress.org/reference/functions/wp_oembed_add_host_js)
 * [wp_oembed_ensure_format()](https://developer.wordpress.org/reference/functions/wp_oembed_ensure_format)
 * [wp_oembed_register_route()](https://developer.wordpress.org/reference/functions/wp_oembed_register_route)
 * [wp_parse_url()](https://developer.wordpress.org/reference/functions/wp_parse_url)
 * [wp_remote_retrieve_cookie()](https://developer.wordpress.org/reference/functions/wp_remote_retrieve_cookie)
 * [wp_remote_retrieve_cookie_value()](https://developer.wordpress.org/reference/functions/wp_remote_retrieve_cookie_value)
 * [wp_remote_retrieve_cookies()](https://developer.wordpress.org/reference/functions/wp_remote_retrieve_cookies)
 * [wp_removable_query_args()](https://developer.wordpress.org/reference/functions/wp_removable_query_args)
 * [wp_rest_server_class()](https://developer.wordpress.org/reference/functions/wp_rest_server_class)
 * [wp_send_new_user_notifications()](https://developer.wordpress.org/reference/functions/wp_send_new_user_notifications)
 * [wp_term_is_shared()](https://developer.wordpress.org/reference/functions/wp_term_is_shared)

#### 󠀁[Deprecated](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#deprecated-2)󠁿

 * [wp_get_http()](https://developer.wordpress.org/reference/functions/wp_get_http)

### 󠀁[Actions & Filters](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#actions-filters)󠁿

#### 󠀁[New Actions](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#new-actions)󠁿

 * [after_password_reset](https://developer.wordpress.org/reference/hooks/after_password_reset)
 * [after_signup_site](https://developer.wordpress.org/reference/hooks/after_signup_site)
 * [after_signup_user](https://developer.wordpress.org/reference/hooks/after_signup_user)
 * [attachment_updated](https://developer.wordpress.org/reference/hooks/attachment_updated)
 * [before_signup_header](https://developer.wordpress.org/reference/hooks/before_signup_header)
 * [clean_user_cache](https://developer.wordpress.org/reference/hooks/clean_user_cache)
 * [customize_post_value_set](https://developer.wordpress.org/reference/hooks/customize_post_value_set)
 * [customize_post_value_set_{$setting_id}](https://developer.wordpress.org/reference/hooks/customize_post_value_set_setting_id)
 * [delete_plugin](https://developer.wordpress.org/reference/hooks/delete_plugin)
 * [delete_widget](https://developer.wordpress.org/reference/hooks/delete_widget)
 * [deleted_plugin](https://developer.wordpress.org/reference/hooks/deleted_plugin)
 * [edit_user_created_user](https://developer.wordpress.org/reference/hooks/edit_user_created_user)
 * [embed_content](https://developer.wordpress.org/reference/hooks/embed_content)
 * [embed_content_meta](https://developer.wordpress.org/reference/hooks/embed_content_meta)
 * [embed_footer](https://developer.wordpress.org/reference/hooks/embed_footer)
 * [embed_head](https://developer.wordpress.org/reference/hooks/embed_head)
 * [enqueue_embed_scripts](https://developer.wordpress.org/reference/hooks/enqueue_embed_scripts)
 * [invite_user](https://developer.wordpress.org/reference/hooks/invite_user)
 * [manage_posts_extra_tablenav](https://developer.wordpress.org/reference/hooks/manage_posts_extra_tablenav)
 * [ms_network_not_found](https://developer.wordpress.org/reference/hooks/ms_network_not_found)
 * [network_site_new_created_user](https://developer.wordpress.org/reference/hooks/network_site_new_created_user)
 * [network_site_users_created_user](https://developer.wordpress.org/reference/hooks/network_site_users_created_user)
 * [network_user_new_created_user](https://developer.wordpress.org/reference/hooks/network_user_new_created_user)
 * [page_attributes_meta_box_template](https://developer.wordpress.org/reference/hooks/page_attributes_meta_box_template)
 * [post_submitbox_minor_actions](https://developer.wordpress.org/reference/hooks/post_submitbox_minor_actions)
 * [pre_auto_update](https://developer.wordpress.org/reference/hooks/pre_auto_update)
 * [register_new_user](https://developer.wordpress.org/reference/hooks/register_new_user)
 * [rest_api_init](https://developer.wordpress.org/reference/hooks/rest_api_init)
 * [wp_add_nav_menu_item](https://developer.wordpress.org/reference/hooks/wp_add_nav_menu_item)
 * [wp_mail_failed](https://developer.wordpress.org/reference/hooks/wp_mail_failed)
 * [wp_verify_nonce_failed](https://developer.wordpress.org/reference/hooks/wp_verify_nonce_failed)

#### 󠀁[New Filters](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#new-filters)󠁿

 * [admin_post_thumbnail_size](https://developer.wordpress.org/reference/hooks/admin_post_thumbnail_size)
 * [comment_excerpt_length](https://developer.wordpress.org/reference/hooks/comment_excerpt_length)
 * [comment_form_fields](https://developer.wordpress.org/reference/hooks/comment_form_fields)
 * [content_pagination](https://developer.wordpress.org/reference/hooks/content_pagination)
 * [customize_loaded_components](https://developer.wordpress.org/reference/hooks/customize_loaded_components)
 * [dashboard_recent_drafts_query_args](https://developer.wordpress.org/reference/hooks/dashboard_recent_drafts_query_args)
 * [dashboard_secondary_items](https://developer.wordpress.org/reference/hooks/dashboard_secondary_items)
 * [default_hidden_columns](https://developer.wordpress.org/reference/hooks/default_hidden_columns)
 * [document_title_parts](https://developer.wordpress.org/reference/hooks/document_title_parts)
 * [document_title_separator](https://developer.wordpress.org/reference/hooks/document_title_separator)
 * [duplicate_comment_id](https://developer.wordpress.org/reference/hooks/duplicate_comment_id)
 * [embed_html](https://developer.wordpress.org/reference/hooks/embed_html)
 * [embed_oembed_discover](https://developer.wordpress.org/reference/hooks/embed_oembed_discover)
 * [embed_site_title_html](https://developer.wordpress.org/reference/hooks/embed_site_title_html)
 * [embed_template](https://developer.wordpress.org/reference/hooks/embed_template)
 * [embed_thumbnail_image_shape](https://developer.wordpress.org/reference/hooks/embed_thumbnail_image_shape)
 * [embed_thumbnail_image_size](https://developer.wordpress.org/reference/hooks/embed_thumbnail_image_size)
 * [enclosure_links](https://developer.wordpress.org/reference/hooks/enclosure_links)
 * [expiration_of_site_transient_{$transient}](https://developer.wordpress.org/reference/hooks/expiration_of_site_transient_transient)
 * [expiration_of_transient_{$transient}](https://developer.wordpress.org/reference/hooks/expiration_of_transient_transient)
 * [export_wp_filename](https://developer.wordpress.org/reference/hooks/export_wp_filename)
 * [feed_links_show_comments_feed](https://developer.wordpress.org/reference/hooks/feed_links_show_comments_feed)
 * [feed_links_show_posts_feed](https://developer.wordpress.org/reference/hooks/feed_links_show_posts_feed)
 * [found_comments_query](https://developer.wordpress.org/reference/hooks/found_comments_query)
 * [get_header_image_tag](https://developer.wordpress.org/reference/hooks/get_header_image_tag)
 * [get_page_of_comment](https://developer.wordpress.org/reference/hooks/get_page_of_comment)
 * [get_page_uri](https://developer.wordpress.org/reference/hooks/get_page_uri)
 * [get_post_status](https://developer.wordpress.org/reference/hooks/get_post_status)
 * [get_role_list](https://developer.wordpress.org/reference/hooks/get_role_list)
 * [get_sample_permalink](https://developer.wordpress.org/reference/hooks/get_sample_permalink)
 * [get_terms_defaults](https://developer.wordpress.org/reference/hooks/get_terms_defaults)
 * [get_{$adjacent}_post_excluded_terms](https://developer.wordpress.org/reference/hooks/get_adjacent_post_excluded_terms)
 * [hidden_columns](https://developer.wordpress.org/reference/hooks/hidden_columns)
 * [illegal_user_logins](https://developer.wordpress.org/reference/hooks/illegal_user_logins)
 * [image_get_intermediate_size](https://developer.wordpress.org/reference/hooks/image_get_intermediate_size)
 * [insert_user_meta](https://developer.wordpress.org/reference/hooks/insert_user_meta)
 * [max_srcset_image_width](https://developer.wordpress.org/reference/hooks/max_srcset_image_width)
 * [mejs_settings](https://developer.wordpress.org/reference/hooks/mejs_settings)
 * [nav_menu_item_args](https://developer.wordpress.org/reference/hooks/nav_menu_item_args)
 * [nav_menu_item_title](https://developer.wordpress.org/reference/hooks/nav_menu_item_title)
 * [navigation_markup_template](https://developer.wordpress.org/reference/hooks/navigation_markup_template)
 * [network_admin_plugin_action_links](https://developer.wordpress.org/reference/hooks/network_admin_plugin_action_links)
 * [network_admin_plugin_action_links_{$plugin_file}](https://developer.wordpress.org/reference/hooks/network_admin_plugin_action_links_plugin_file)
 * [notify_moderator](https://developer.wordpress.org/reference/hooks/notify_moderator)
 * [notify_post_author](https://developer.wordpress.org/reference/hooks/notify_post_author)
 * [oembed_discovery_links](https://developer.wordpress.org/reference/hooks/oembed_discovery_links)
 * [oembed_endpoint_url](https://developer.wordpress.org/reference/hooks/oembed_endpoint_url)
 * [oembed_min_max_width](https://developer.wordpress.org/reference/hooks/oembed_min_max_width)
 * [oembed_response_data](https://developer.wordpress.org/reference/hooks/oembed_response_data)
 * [old_slug_redirect_url](https://developer.wordpress.org/reference/hooks/old_slug_redirect_url)
 * [plugin_action_links](https://developer.wordpress.org/reference/hooks/plugin_action_links)
 * [plugin_action_links_{$plugin_file}](https://developer.wordpress.org/reference/hooks/plugin_action_links_plugin_file)
 * [post_edit_category_parent_dropdown_args](https://developer.wordpress.org/reference/hooks/post_edit_category_parent_dropdown_args)
 * [post_embed_url](https://developer.wordpress.org/reference/hooks/post_embed_url)
 * [postmeta_form_keys](https://developer.wordpress.org/reference/hooks/postmeta_form_keys)
 * [pre_delete_post](https://developer.wordpress.org/reference/hooks/pre_delete_post)
 * [pre_get_document_title](https://developer.wordpress.org/reference/hooks/pre_get_document_title)
 * [pre_get_lastpostmodified](https://developer.wordpress.org/reference/hooks/pre_get_lastpostmodified)
 * [register_post_type_args](https://developer.wordpress.org/reference/hooks/register_post_type_args)
 * [register_taxonomy_args](https://developer.wordpress.org/reference/hooks/register_taxonomy_args)
 * [respond_link](https://developer.wordpress.org/reference/hooks/respond_link)
 * [rest_url](https://developer.wordpress.org/reference/hooks/rest_url)
 * [rest_url_prefix](https://developer.wordpress.org/reference/hooks/rest_url_prefix)
 * [screen_options_show_submit](https://developer.wordpress.org/reference/hooks/screen_options_show_submit)
 * [show_network_active_plugins](https://developer.wordpress.org/reference/hooks/show_network_active_plugins)
 * [signup_get_available_languages](https://developer.wordpress.org/reference/hooks/signup_get_available_languages)
 * [subdirectory_reserved_names](https://developer.wordpress.org/reference/hooks/subdirectory_reserved_names)
 * [submenu_file](https://developer.wordpress.org/reference/hooks/submenu_file)
 * [taxonomy_labels_{$taxonomy}](https://developer.wordpress.org/reference/hooks/taxonomy_labels_taxonomy)
 * [the_category_list](https://developer.wordpress.org/reference/hooks/the_category_list)
 * [the_excerpt_embed ](https://developer.wordpress.org/reference/hooks/the_excerpt_embed)
 * [update_right_now_text](https://developer.wordpress.org/reference/hooks/update_right_now_text)
 * [user_profile_picture_description](https://developer.wordpress.org/reference/hooks/user_profile_picture_description)
 * [users_list_table_query_args](https://developer.wordpress.org/reference/hooks/users_list_table_query_args)
 * [view_mode_post_types](https://developer.wordpress.org/reference/hooks/view_mode_post_types)
 * [wp_calculate_image_sizes](https://developer.wordpress.org/reference/hooks/wp_calculate_image_sizes)
 * [wp_calculate_image_srcset](https://developer.wordpress.org/reference/hooks/wp_calculate_image_srcset)
 * [wp_dropdown_users_args](https://developer.wordpress.org/reference/hooks/wp_dropdown_users_args)
 * [wp_http_ixr_client_headers](https://developer.wordpress.org/reference/hooks/wp_http_ixr_client_headers)
 * [wp_post_revision_title_expanded](https://developer.wordpress.org/reference/hooks/wp_post_revision_title_expanded)
 * [wp_prepare_revision_for_js](https://developer.wordpress.org/reference/hooks/wp_prepare_revision_for_js)
 * [wp_theme_editor_filetypes](https://developer.wordpress.org/reference/hooks/wp_theme_editor_filetypes)
 * [xmlrpc_chunk_parsing_size](https://developer.wordpress.org/reference/hooks/xmlrpc_chunk_parsing_size)

#### 󠀁[Deprecated](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#deprecated-3)󠁿

### 󠀁[External Libraries](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#external-libraries)󠁿

### 󠀁[Miscellaneous](https://wordpress.org/documentation/wordpress-version/version-4-4/?output_format=md#miscellaneous)󠁿

First published

February 18, 2019

Last updated