php - Login_validation() in CodeIgniter not working? -

my code:

<?php defined('basepath') or exit('no direct script access allowed');  class main extends ci_controller {  public function index() {     $this->login(); }  public function login() {     $this->load->view('login'); }  public function members()  {     $this->load->view('members'); }  public function login_validation()  {     $this->load->library('form_validation');      $this->form_validation->set_rules('email', 'email', 'required');     $this->form_validation->set_rules('password', 'password', 'required');      if ($this->form_validation->run() == true)     {         redirect('main/members');     }     else      {          echo 'not working';     } } 

}

this login_validation function , login form in view:

<?php       echo form_open('main/login_validation');      echo validation_errors();      echo "<p>email: ";     echo form_input('email');     echo "</p>";      echo "<p>password: ";     echo form_password('password');     echo "</p>";      echo "<p>";     echo form_submit('login_submit','login');     echo "</p>";      echo form_close();  ?> 

when enter email , password fields returns "not working".

also if don't enter email or password returns not working means library unable load guess. double checked documentation , seems right. ideas?

before saying thing want know , thing print or redirect desire uri? if not 1. @ first have know version of ci. if using ci 3.00 should check controller file name , class name (both should need start uppercase). 2.check .htaccess.