How to user logout (destroy session) in codeigniter?

 User logout (destroy session) in Codeigniter

Paste in Controller

public function logout(){

                $this->load->library('session');

$this->session->unset_userdata('ID');

$this->session->sess_destroy();

redirect('register');

}

Paste in View

<div class="site_header"><h2><a href="<?php echo base_url('index.php/Welcome/logout'); ?>">Logout</a></h2></div>

Note:- Welcome is a controller name