Global: blog_id

Want to put something else besides “Howdy” and “Log Out” in the upper right hand corner? It’s easy!

add_filter('admin_user_info_links', 'add_user_id_to_top');
function add_user_id_to_top($links) {
	global $current_user;
	get_currentuserinfo();
	$links[] = ' | User ID: '. $current_user->ID;
	return $links;
}

In this example, we’re adding the current user’s ID to the top. I also like adding the blog ID up there when working on a WordPress network.

add_filter('admin_user_info_links', 'add_site_id_to_top');
function add_site_id_to_top($links) {
	global $blog_id;
	$links[] = ' | Site ID: '. $blog_id;
	return $links;
}