controller

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

class Auth extends CI_Controller {

    public function __construct(){
        parent::__construct();
        $this->load->library('form_validation');
    }
    public function index(){
        $this->load->view('template/auth_header');
        $this->load->view('auth/login');
        $this->load->view('template/auth_footer');
    }

    public function registration(){

        //aturan untuk kolom inputan pada form

        $this->form_validation->set_rules('name', 'Name', 'required|trim');
        $this->form_validation->set_rules('email', 'Email', 'required|trim|valid_email');
        $this->form_validation->set_rules('password1', 'Password', 'required|trim|
        min_length[3]|matches[password2]');
        $this->form_validation->set_rules('password2', 'Password', 'required|trim|matches[password1]');


        //logika untuk mengembalikan tampilan apabila form_validasi nya gagal
        if ($this->form_validation->run() == false ){

            $data['judul'] = 'Halaman Registration';
            $this->load->view('template/auth_header', $data);
            $this->load->view('auth/registration');
            $this->load->view('template/auth_footer');
        } else {
            echo 'data berhasil ditambahkan';
        }

    }
}