title: form_open() is not working peoperly
body: <p>I have a controller named : user_login_controller.php and view : user_login_view.php
  code of user_login_view.php</p>
  
  <pre><code> &lt;?php echo form_open('user_login_controller/login', 'class="form-horizontal" id="userloginform"');?&gt;
      &lt;fieldset&gt;
        &lt;legend&gt;Student Login&lt;/legend&gt;
        &lt;div class="form-group"&gt;
          &lt;div class="col-lg-6 col-md-6 col-xs-10"&gt;
            &lt;?php echo form_input(['name'=&gt;'rno','class'=&gt;'form-control','placeholder'=&gt;'Roll Number'])?&gt;
          &lt;/div&gt;
        &lt;/div&gt;
        &lt;div class="form-group"&gt;
          &lt;div class="col-lg-6 col-md-6 col-xs-10"&gt;
            &lt;?php echo form_password(['name'=&gt;'pwd','class'=&gt;'form-control','placeholder'=&gt;'Password'])?&gt;
          &lt;/div&gt;
        &lt;/div&gt;
         &lt;div class="col-lg-6 col-md-6 col-lg-offset-2 col-md-offset-2"&gt;
            &lt;?php echo form_reset(['name'=&gt;'Reset','value'=&gt;'Cancel','class'=&gt;'btn btn-primary'])?&gt;
            &lt;?php echo form_submit(['name'=&gt;'Submit','value'=&gt;'Login','class'=&gt;'btn btn-primary'])?&gt;
          &lt;/div&gt;
        &lt;/div&gt;
      &lt;/fieldset&gt;
    &lt;/form&gt;
  </code></pre>
  
  <p>On submit button click I m sending control to user_login_controller/login
  here is user_login_controller.php</p>
  
  <pre><code>&lt;?php
  class User_login_controller extends MY_Controller
  {
      public function index()
      {
          $this-&gt;load-&gt;view('user/user_login_view');
      }
      public function login()
      {
          echo "User login function";
      }
  }
  </code></pre>
  
  <p>?>
  but it's given me 404 error.however i have both files</p>
  
  <p>and when I m going through url(<a href="http://localhost:8090/project/user_login_controller/login" rel="nofollow noreferrer">http://localhost:8090/project/user_login_controller/login</a>) :then its working. and i have loaded all the necessary helpers.</p>
  
  <pre><code>$autoload['helper'] = array('url','form');
  </code></pre>
  
  <p>what to do now? </p>