__clear_multi_author_cache() – Helper function to clear the cache for number of authors.
__return_empty_array() – Returns an empty array.
_access_denied_splash() – Displays an access denied message when a user tries to view a site’s dashboard they do not have access to.
_add_post_type_submenus() – Add submenus for post types.
_add_themes_utility_last() – Adds the (theme) ‘Editor’ link to the bottom of the Appearance menu.
_admin_bar_bump_cb() – Default admin bar callback.
_admin_menu – action
_admin_notice_post_locked() – Outputs the HTML for the notice to say that someone else is editing or has taken over editing of this post.
_admin_search_query() – Displays the search query.
_ajax_wp_die_handler() – Kills WordPress execution and displays Ajax response with an error message.
_autop_newline_preservation_helper() – Newline preservation help function for wpautop
_cleanup_image_add_caption() – Private preg_replace callback used in image_add_caption()
_delete_attachment_theme_mod() – Checks an attachment being deleted to see if it’s a header or background image.
_deprecated_argument() – Mark a function argument as deprecated and inform when it has been used.
_filter_query_attachment_filenames() – Filter the SQL clauses of an attachment query to include filenames.
_fix_attachment_links() – Replace hrefs of attachment anchors with up-to-date permalinks.
_get_additional_user_keys() – Returns a list of meta keys to be (maybe) populated in wp_update_user().
_get_admin_bar_pref() – Retrieve the admin bar display preference of a user.
_get_cron_array() – Retrieve cron info array option.
_get_post_ancestors() – Retrieve post ancestors.
_links_add_base() – Callback to add a base url to relative links in passed content.
_links_add_target() – Callback to add a target attribute to all links in passed content.
_network_admin_menu – action
_redirect_to_about_wordpress() – Redirect to the About WordPress page after a successful upgrade.
_remove_qs_args_if_not_in_url() – Removes arguments from a query string if they are not present in a URL DO NOT use this in plugin code.
_set_cron_array() – Updates the CRON option with the new CRON array.
_thickbox_path_admin_subfolder() – Thickbox image paths for Network Admin.
_upgrade_cron_array() – Upgrade a Cron info array.
_user_admin_menu – action
_wp_add_global_attributes() – Helper function to add global attributes to a tag in the allowed html list.
_wp_admin_bar_init() – Instantiate the admin bar object and set it up as a global for access elsewhere.
_wp_admin_html_begin() –
_wp_ajax_add_hierarchical_term() – Ajax handler for adding a hierarchical term.
_wp_ajax_delete_comment_response() – Sends back current comment total and new page links if they need to be updated.
_wp_ajax_menu_quick_search() – Prints the appropriate response to a menu quick search.
_wp_auto_add_pages_to_menu() – Automatically add newly published page objects to menus with that as an option.
_wp_call_all_hook() – Call the ‘all’ hook, which will process the functions hooked into it.
_wp_credits_add_profile_link() – Retrieve the link to a contributor’s WordPress.org profile page.
_WP_Dependency::add_data() – Add handle data.
_wp_get_allowed_postdata() – Returns only allowed post data fields
_wp_get_attachment_relative_path() – Get the attachment path relative to the upload directory.
_wp_keep_alive_customize_changeset_dependent_auto_drafts() – Make sure that auto-draft posts get their post_date bumped or status changed to draft to prevent premature garbage-collection.
_wp_privacy_account_request_confirmed_message() – Return request confirmation message HTML.
_wp_privacy_account_request_confirmed() – Update log when privacy request is confirmed.
_wp_privacy_action_request_types() – Get all user privacy request types.
_wp_register_meta_args_whitelist() – Filter out `register_meta()` args based on a whitelist.
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
. $editor_id_attr . ); // Prepare the content for the Visual or Text editor, only when TinyMCE is used (back-compat). if ( self::$this_tinymce ) { add_filter( , , 10, 2 ); } /** * Filters the default editor content. * * @since 2.1.0 * * @param string $content Default editor content. * @param string $default_editor The default editor for the current user. * Either or . */ $content = apply_filters( , $content, $default_editor ); // Remove the filter as the next editor on the same page may not need it. if ( self::$this_tinymce ) { remove_filter( , ); } // Back-compat for the `htmledit_pre` and `richedit_pre` filters if ( === $default_editor && has_filter( ) ) { // TODO: needs _deprecated_filter(), use _deprecated_function() as substitute for now _deprecated_function( – filter
$taxonomy_add_form – action
$taxonomy_add_form_fields – action
$taxonomy_pre_add_form – action
$taxonomy_row_actions – filter
absint() – Convert a value to non-negative integer.
activate_$file – action
activate_$plugin – action
activate_blog – action
activate_header – action
activate_plugin – action
activate_plugin() – Attempts activation of plugin in a "sandbox" and redirects on success.
activate_plugins() – Activate multiple plugins.
activate_sitewide_plugin() – Deprecated functionality for activating a network-only plugin.
activate_wp_head – action
activated_plugin – action
activity_box_end – action
add_$meta_type_meta – action
add_$meta_type_metadata – filter
add_action() – Hooks a function on to a specific action.
add_admin_bar_menus – action
add_attachment – action
add_blog_metadata – filter
add_blog_option() – Add a new option for a given blog id.
add_category_form_pre – action
add_clean_index() – Adds an index to a specified table.
add_comment_meta() – Add meta data field to a comment.
add_comments_page() – Add submenu page to the Comments main menu.
add_contextual_help() – Add contextual help text for a page.
add_cssclass() –
add_custom_background() – Add callbacks for background image display.
add_custom_image_header() – Add callbacks for image header display.
add_dashboard_page() – Add submenu page to the Dashboard main menu.
add_editor_style() – Add callback for custom TinyMCE editor stylesheets.
add_existing_user_to_blog() – Add a user to a blog based on details from maybe_add_existing_user_to_blog().
add_feed() – Add a new feed type like /atom1/.
add_filter() – Hook a function or method to a specific filter action.
add_image_size() – Register a new image size.
add_inline_data – action
add_link – action
add_link_category_form_pre – action
add_link() – Add a link to using values provided in $_POST.
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