Get a list of all registered post type objects.

Retrieves a list of post type names that support a specific feature.

Retrieves an array of the latest posts, or posts matching the given criteria.

Retrieve the post SQL based on capability, author, and type.

Retrieve the private post SQL based on capability.

Retrieve URLs already pinged for a post.

Retrieve URLs that need to be pinged.

Determines whether an attachment URI is local and really an attachment.

Determine whether a post is publicly viewable.

Determine whether a post status is considered “viewable”.