title: How to call one controller function in another controller in codeigniter
body: <p>I have one controller named <code>home.php</code> in which a function named <code>podetails</code> is there. I want to call this function in another controller <code>user.php</code>.<br>
  Is it possible to do so? I have read about <code>HMVC</code> in CI, but I want to know is it possible to do without using hmvc?</p>