get_the_modified_author( int|WP_Post|null $post = null ): string|null

94function get_the_modified_author( $post = null ) {95	$post = get_post( $post );96	if ( ! $post ) {97		return null;98	}99 100	$last_id = get_post_meta( $post->ID, '_edit_last', true );101	if ( ! $last_id ) {102		return null;103	}104	$last_user = get_userdata( $last_id );105 106	/**107	 * Filters the display name of the author who last edited the current post.108	 *109	 * @since 2.8.0110	 *111	 * @param string $display_name The author's display name, empty string if user is unavailable.112	 */113	return apply_filters( 'the_modified_author', $last_user ? $last_user->display_name : '' );114}