working with forms in codeigniter

Before we work with forms, we need to add form option in helper on autoload.php file as follows:

$autoload['helper'] = array('url', 'file','form');

After changing this, create the following file as login.php in views

<?php

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

?>

<div class="container" style="margin-top:30vh;">

  <div class="row">

      <div class="col-lg-4 col-md-4 col-sg-oush-4 col-md-push-4">

         <div class="panel panel-default">

             <div class="panel-heading">LOGIN</div>

               <div class="panel-body">

                  <?php echo form_open('url'); ?>

                     <div class="form-group">

                        <input type="text" name="u_name" placeholder="Username" required class="form-control input-sm">

                     </div>

                     <div class="form-group">

                        <input type="password" name="u_password" placeholder="Password" required class="form-control input-sm">

                     </div>

                     <div class="form-group">

                        <input type="submit" name="u_login" value="Login" class="btn btn-success btn-sm">

                     </div>

                  <?php echo form_close(); ?>

               </div>

         </div>

      </div>

  </div>

</div>

Note that, here i used bootstrap so don't forgot to add header and footer file in the controller. Here is my controller.

<?php

defined('BASEPATH') or exit('No direct script access allowed');

class Home extends CI_Controller

{

  public function index()

  {

    $this->load->view("home"); 

  }

  public function login()

  {

    $this->load->view("header");

    $this->load->view("login");

    $this->load->view("footer");

  }

}

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