post-ids.md

Post IDs interface

The Post_IDs interface describes an object containing post IDs, such as the IDs in a query or a curated set of featured posts.

Definition

interface Post_IDs {
	public function post_ids(): array;
}

Bundled implementations

• Empty_Post_IDs: No post IDs.
• Post_IDs_Envelope: Instance from an existing set of IDs.
• Post_IDs_Once: Always returns the same set of IDs from the original instance.
• Used_Post_IDs: Track post IDs that have been used, e.g. while rendering a page.
• WP_Query_Post_IDs: The post IDs from a WP_Query.

All Post_Query implementations also implement Post_IDs.