view and control

 <?php echo validation_errors(); ?>
                 <form action="<?= base_url() ?>verifylogin" method="post"   name="menuForm" class="form-horizontal">
                    <div class="form-group">
                        <div class="col-md-12">
                            <label for="username"></label>
                            <input type="text" class="form-control" placeholder="E-mail" id="txtusername"/>
                        </div>
                    </div>

                    <div class="form-group">
                        <div class="col-md-12">
                             <label for="password"></label>
                            <input type="password" class="form-control" placeholder="Password" id="txtpassword"/>
                        </div>
                    </div>
                    <br>
                    <div class="form-group">
                        <div class="col-md-6">
                            <a href="#" class="btn btn-link btn-block">Forgot your password?</a>
                        </div>
                        <div class="col-md-6">
                            <button class="btn btn-info btn-block">Log In</button>
                        </div>
                    </div>
              </form>

------------------------------------

controller
---------------------


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

class Verifylogin extends CI_Controller {

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


   $this->load->model('modLogin','',TRUE);
 }


function index()
 {
        print_r( $this->input->post());
        $email = $this->input->post('txtusername');
        $password = $this->input->post('txtpassword',TRUE);
    //    echo ' - ' . $password . $email;

        die();
  $this->load->library('form_validation');
  $this->load->helper(array('form', 'url'));
  $this->form_validation->set_rules('username', 'Username', 'required');
  $this->form_validation->set_rules('password', 'Password', 'required');
       // $this->form_validation->set_rules('username', 'Username', 'trim|required|valid_email|xss_clean');
        //$this->form_validation->set_rules('password', 'Password', 'trim|required|sha1');
        $email = $this->input->post('username');
        $password = $this->input->post('password');
        echo $password . $email;

        die();

   if($this->form_validation->run() == FALSE)
   {
     $this->load->view('vlogin');
   }
   else
   {
     redirect('home', 'refresh');
   }

 }

 function check_database($password)
 {
   //Field validation succeeded.  Validate against database
   $username = $this->input->post('username');

   //query the database
   $result = $this->MLogin->login($username, $password);

   if($result)
   {
     $sess_array = array();
     foreach($result as $row)
     {
       $sess_array = array(
         'id' => $row->id,
         'username' => $row->username
       );
       $this->session->set_userdata('logged_in', $sess_array);
     }
     return TRUE;
   }
   else
   {
     $this->form_validation->set_message('check_database', 'Invalid username or password');
     return false;
   }
 }

}