the blog owner multisite

Question

In a multisite, how can I get the ID of the owner of the current blog?

I know how to get the current blogs Id using get_current_blog_id(), so given that ID, how would I fetch the ID of the owner of that blog? (there's just one owner per blog.)

Answer 1

I use this workaround to get the ID of the owner of the current blog:

$thisblog = $current_blog->blog_id;
$mail = get_blog_option($thisblog, 'admin_email');
$user_id_from_email = get_user_id_from_string($mail);

Answer 2

I came up with this solution for a direct query, but I'd still like to know if there's a template tag I've missed.

$blog_id = get_current_blog_id();

$querystring = "SELECT `user_id`
                FROM `wp_usermeta`
                WHERE (meta_key LIKE 'primary_blog' AND meta_value LIKE $blog_id) 
                LIMIT 1";

$blogownerid = $wpdb->get_var($querystring);