Create new comment.

Retrieves the database server version.

Determines if a database supports a particular feature.

Displays the search query.

Closes comments on an old post. Hooked to comments_open and pings_open.

Closes comments on old posts on the fly, without any extra DB queries. Hooked to the_posts.

Gets the post title.

Sanitizes plugin data, optionally adds markup, optionally translates.

Callback to add a base URL to relative links in passed content.

Callback to add a target attribute to all links in passed content.