route system

i want to route like this

ex: 

http://localhost/index.php/user/USERNAME_FROM_MYSQL

PHP Code:

class Host extends CI_Controller {


public function ?()
{

}
} 


routes.php

PHP Code:

$route['user/(:any)'] = 'user/get/$1'; 


Controller: User.php

PHP Code:

class User extends CI_Controller
{
    function get($username)
    {
        .. some codes ..
    }
} 


CHEERS~!

[Just a programmer] [/Just a programmer]