__clear_multi_author_cache() – Helper function to clear the cache for number of authors.
__construct() – Create a new cache object
_admin_bar_bump_cb() – Default admin bar callback.
_c() – Retrieve translated string with vertical bar context
_canonical_charset() – Retrieve a canonical form of the provided charset appropriate for passing to PHP functions such as htmlspecialchars() and charset html attributes.
_cleanup_header_comment() – Strip close comment and close php tags from file headers used by WP.
_cleanup_image_add_caption() – Private preg_replace callback used in image_add_caption()
_clear_modified_cache_on_transition_comment_status() – Clear the lastcommentmodified cached value when a comment status is changed.
_close_comments_for_old_post() – Close comments on an old post. Hooked to comments_open and pings_open.
_close_comments_for_old_posts() – Close comments on old posts on the fly, without any extra DB queries. Hooked to the_posts.
_config_wp_home() – Retrieve the WordPress home page URL.
_config_wp_siteurl() – Retrieve the WordPress site URL.
_convert_urlencoded_to_entities() – Preview fix for JavaScript bug with foreign languages.
_copy_dir() – Copies a directory from one location to another via the WordPress Filesystem Abstraction.
_copy_image_file() – Copy an existing image file.
_count_posts_cache_key() – Return the cache key for wp_count_posts() based on the passed arguments.
_crop_image_resource() – Crops an image resource. Internal use only.
_custom_background_cb() – Default custom background callback.
_custom_header_background_just_in_time() – Registers the internal custom header and background routines.
_custom_logo_header_styles() – Adds CSS to hide header text for custom logo, based on Customizer setting.
_deprecated_constructor() – Marks a constructor as deprecated and informs when it has been used.
_device_can_upload() – Test if the current device has the capability to upload files.
_get_component_from_parsed_url_array() – Retrieve a specific component from a parsed URL array.
_get_cron_array() – Retrieve cron info array option.
_get_cron_lock() – Retrieves the cron lock.
_get_custom_object_labels() – Build an object with custom-something object (post type, taxonomy) labels out of a custom-something object
_get_non_cached_ids() – Retrieve ids that are not already present in the cache.
_get_plugin_from_callback() – Internal helper function to find the plugin from a meta box callback.
_get_term_children() – Get the subset of $terms that are descendants of $term_id.
_make_cat_compat() – Update category structure to old pre 2.3 from new taxonomy structure.
_make_email_clickable_cb() – Callback to convert email address match to HTML A element.
_make_url_clickable_cb() – Callback to convert URI match to HTML A element.
_make_web_ftp_clickable_cb() – Callback to convert URL match to HTML A element.
_maybe_update_core() – Determines whether core should be updated.
_oembed_create_xml() – Creates an XML string from a given array.
_oembed_filter_feed_content() – Prepare the oembed HTML to be displayed in an RSS feed.
_pad_term_counts() – Add count of children to parent count.
_post_type_meta_capabilities() – Store or return a list of post type meta caps for map_meta_cap().
_prime_comment_caches() – Adds any comments from the given IDs to the cache that do not already exist in cache.
_prime_network_caches() – Adds any networks from the given IDs to the cache that do not already exist in cache.
_prime_post_caches() – Adds any posts from the given ids to the cache that do not already exist in cache
_prime_site_caches() – Adds any sites from the given ids to the cache that do not already exist in cache.
_prime_term_caches() – Adds any terms from the given IDs to the cache that do not already exist in cache.
_register_widget_form_callback() – Registers the form callback for a widget.
_register_widget_update_callback() – Registers the update callback for a widget.
_relocate_children() – This was once used to move child posts to a new parent.
_set_cron_array() – Updates the CRON option with the new CRON array.
_sort_name_callback() – Callback to sort array by a ‘name’ key.
_sort_uname_callback() – Callback to sort array by a ‘Name’ key.
_update_generic_term_count() – Will update term count based on number of objects.
_update_post_term_count() – Will update term count based on object types of the current taxonomy.
_update_posts_count_on_delete() – Handler for updating the current site’s posts count when a post is deleted.
_update_posts_count_on_transition_post_status() – Handler for updating the current site’s posts count when a post status changes.
_update_term_count_on_transition_post_status() – Update the custom taxonomies’ term counts when a post’s status is changed.
_upgrade_cron_array() – Upgrade a Cron info array.
_wp_ajax_delete_comment_response() – Sends back current comment total and new page links if they need to be updated.
_wp_call_all_hook() – Call the ‘all’ hook, which will process the functions hooked into it.
_wp_can_use_pcre_u() – Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use.
_wp_check_for_scheduled_split_terms() – In order to avoid the _wp_batch_split_terms() job being accidentally removed, check that it’s still scheduled while we haven’t finished splitting terms.
_wp_check_split_default_terms() – Check default categories when a term gets split to see if any of them need to be updated.
_wp_check_split_nav_menu_terms() – If the term being split is a nav_menu, change associations.
_wp_check_split_terms_in_menus() – Check menu items when a term gets split to see if any of them need to be updated.
_wp_credits_add_profile_link() – Retrieve the link to a contributor’s WordPress.org profile page.
_wp_credits_build_object_link() – Retrieve the link to an external library used in WordPress.
_wp_customize_changeset_filter_insert_post_data() – Filters changeset post data upon insert to ensure post_name is intact.
_wp_customize_include() – Includes and instantiates the WP_Customize_Manager class.
_wp_customize_loader_settings() – Adds settings for the customize-loader script.
_wp_customize_publish_changeset() – Publishes a snapshot’s changes.
_wp_dashboard_control_callback() – Outputs controls for the current dashboard widget.
_wp_dashboard_recent_comments_row() – Outputs a row for the Recent Comments widget.
_wp_delete_customize_changeset_dependent_auto_drafts() – Delete auto-draft posts associated with the supplied changeset.
_wp_get_current_user() – Retrieves the current user object.
_wp_get_user_contactmethods() – The old private function for setting up user contact methods.
_wp_image_editor_choose() – Tests which editors are capable of supporting the request.
_wp_iso_convert() – Helper function to convert hex encoded chars to ASCII
_wp_json_convert_string() – Convert a string to UTF-8, so that it can be safely encoded to JSON.
_wp_json_sanity_check() – Perform sanity checks on data that shall be encoded to JSON.
_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_kses_split_callback() – Callback for wp_kses_split.
_WP_List_Table_Compat::__construct() –
_WP_List_Table_Compat::get_column_info() –
_WP_List_Table_Compat::get_columns() –
_wp_menu_item_classes_by_context() – Add the class property classes for the current context, if applicable.
_wp_menus_changed() – Handle menu config after theme change.
_wp_object_count_sort_cb() – Serves as a callback for comparing objects based on count.
_wp_personal_data_cleanup_requests() – Cleans up failed and expired requests before displaying the list table.
_wp_post_thumbnail_class_filter_add() – Adds ‘_wp_post_thumbnail_class_filter’ callback to the ‘wp_get_attachment_image_attributes’ filter hook. Internal use only.
_wp_post_thumbnail_class_filter_remove() – Removes the ‘_wp_post_thumbnail_class_filter’ callback from the ‘wp_get_attachment_image_attributes’ filter hook. Internal use only.
_wp_post_thumbnail_class_filter() – Adds a ‘wp-post-image’ class to post thumbnails. Internal use only.
_wp_privacy_completed_request() – Marks a request as completed by the admin and logs the current timestamp.
_wp_sidebars_changed() – Handle sidebars config after theme change
_wp_timezone_choice_usort_callback() – Sort-helper for timezones.
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_menu_classes() –
admin_color_scheme_picker() – Display the default admin color scheme picker (Used in user-edit.php)
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