CodeIgniter contoller which shows client IP address

ip_address.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Ip_address extends CI_Controller {

	function __construct()
	{
		parent::__construct();
	}

	function index()
	{
		//var_dump($_SERVER);
		echo $this->input->ip_address();
	}
}

/* End of file ip_address.php */
/* Location: ./application/controllers/ip_address.php */

Thanks, it works!