get_preview_post_link()

get_preview_post_link() — Retrieves the URL used for the post preview. Allows additional query args to be appended.

Inputs: $post (int|WP_Post): Optional. Post ID or WP_Post object. Defaults to global $post. $query_args (array): Optional. Array of additional query args to be appended to the link. Default empty array. $preview_link (string): Optional. Base preview link to be used if it should differ from the post permalink. Default empty.

Returns string|null: URL used for the post preview, or null if the post does not exist.