Ensure the ‘tax_query’ argument passed to the class constructor is well-formed.

Sanitize a ‘relation’ operator.

Prepares the query variables.

Determines if a database supports a particular feature.

Wraps passed links in navigational markup.

Registers theme support for a given feature.

Outputs a complete commenting form for use within a template.

Gets the number of posts a user has written.

Gets an array of ancestor IDs for a given object.

Retrieves the approved comments for post $post_id.