Simple login and Registration form using codeigniter

--
-- Database: `registration`
--
CREATE TABLE IF NOT EXISTS `user_registration` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `email` varchar(255) NOT NULL,
  `password` varchar(255) NOT NULL,
  `phone` varchar(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=6 ;

--
-- Dumping data for table `user_registration`
--

INSERT INTO `user_registration` (`id`, `name`, `email`, `password`, `phone`) VALUES
(1, 'madhurendra', 'madhurendra.rit@gmail.com', '123456789', '8802367534\r\n');

 autoload.php :   
 We have to change in autoload.php as follows,  

 $autoload['libraries'] = array('database', 'session');
 $autoload['helper'] = array('url');

View (registration.php) Registration page is like: -

	
	

	



	
	


	
Name 
	

	
	

	
Email 
	

	
	

	
Password 
	

	
	

	
Phone 
	

	
	

		
 
	

	

View (registration.php) Registration page is like: -

load->helper('form');
		$this->load->view('registration');
		
	}
public function page(){
	    $this->load->library('session');
		if($this->session->userdata('login')!=''){
		$this->load->view('home');	
		}else{
		redirect('home/login');
		}
	}
public function registration(){
	$this->load->helper('form');
	$this->load->library('form_validation');
	$this->form_validation->set_error_delimiters('

', '
');
	$this->form_validation->set_rules('name', 'Name', 'required');
	$this->form_validation->set_rules('email', 'Email','required|valid_email|is_unique[user_registration.email]'); 
	$this->form_validation->set_rules('password', 'Password', 'required');
	$this->form_validation->set_rules('phone', 'Phone Number', 'required');
	if ($this->form_validation->run() === FALSE)
	{
		$this->load->view('registration');

	}
	else
	{
		  $data=array('name'=>$this->input->post('name'),'email'=>$this->input->post('email'),'password'=>$this->input->post('password'), 'phone'=>$this->input->post('phone'));
		  $query=$this->db->insert('user_registration',$data);
		  $this->load->library('session');
		  $this->session->set_flashdata('success','Registration Successfully Please Login Here');
		  redirect('home/login','refresh');  
	}
}	
public function login(){	
    $this->load->helper('form');
	$this->load->library('session');
	$this->load->library('form_validation');
	$this->form_validation->set_error_delimiters('

', '
');
	$this->form_validation->set_rules('email', 'Email','required|valid_email');
	$this->form_validation->set_rules('password', 'Password ', 'required');
	if ($this->form_validation->run() === FALSE)
	{
		$this->load->view('login');
	}
	    else{
		$email=$this->input->post('email');
		$password=$this->input->post('password');
		$data['checkdata']=$this->common->check_password($email,$password);
		if(!empty($data['checkdata'])){
		   $logindata = array(
		           'name'  =>$data['checkdata'][0]['name'] ,
                   'id'  =>$data['checkdata'][0]['id'] ,
                   'email'     =>$data['checkdata'][0]['email'] ); 
				   	$this->load->library('session');
                    $this->session->set_userdata('login',$logindata);
					redirect('home/page','refresh');
					
	}else{
			$data['loginerror']="UserDetails Wrong Please Try Again";
			$this->load->view('login',$data);			
			}
		}	
}
function logout(){
	$this->session->unset_userdata('login');
	redirect('home','refresh');
	
}

function getData($id=Null){
	echo $id;
  }
}
?>

Model (common.php)

db->get_where('user_registration', array('email' => $email,'password'=>$password));
		return $query->result_array();
		}
}
?>

PHP Login Page with Ajax Code with Example.