title: How to disable admin bar in wordpress 3.9?
body: <p>I'm trying to disable admin bar for registered users, whiche are not administrators. I found many solutions like adding</p>
  
  <pre><code>if ( ! current_user_can( 'add_users' ) ) {
  show_admin_bar( false ); }
  </code></pre>
  
  <p>to functions.php, but it totally doesn't work. As I understand it is problem of "the best" version 3.9. I also tried many plugins - there are no working ones... Does any solution exist today?</p>