title: Codeigniter : calling a method of one controller from other
body: <p>I have two controllers <code>a</code> and <code>b</code>. </p>
  
  <p>I would like to call a method of controller <code>a</code> from a method of controller <code>b</code>.</p>
  
  <p>Could anyone help explain how I can achieve this?</p>