title: codeigniter how to call function which resides in another controller
body: <p>One stupid question, I want to call from my admin_news controller function which resides in another controller Admin. FUnction name is <code>is_logged_in();</code>
  admin.php</p>
  
  <pre><code>public function is_logged_in()
  {
     ....
  }
  
  
  admin_news.php
  public function __contruct()
  {
     parent::__construct();
     //admin-&gt;is_logged_in();??
  }
  </code></pre>
  
  <p>how can I do that?
  Thanks</p>