_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.
_get_custom_object_labels() – Build an object with custom-something object (post type, taxonomy) labels out of a custom-something object
_update_blog_date_on_post_delete() – Handler for updating the current site’s last updated date when a published post is deleted.
_update_blog_date_on_post_publish() – Handler for updating the site’s last updated date when a post is published or an already published post is changed.
_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.
_wp_upgrade_revisions_of_post() – Upgrade the revisions author, add the current post as a revision and set the revisions version to 1
delete_blog_option() – Removes option by name for a given blog id. Prevents removal of protected WordPress options.
get_object_taxonomies() – Return the names or objects of the taxonomies which are registered for the requested object or object type, such as a post object or post type name.