welcome_revisi.php

<?php
defined('BASEPATH') Or exit('No Direct Script Access Allowed');

/**
 *
 */
class Welcome extends CI_Controller{
    function __construct(){
        parent::__construct();
    }

    public function index(){
        $this->load->view('login');
    }
        public function login(){
        $username = $this->input->post('admin_username');
        $password = $this->input->post('admin_password');
        $this->form_validation->set_rules('admin_username','username','trim|required');
        $this->form_validation->set_rules('admin_password','password','trim|required');

        if ($this->form_validation->run() != false) {
            $where = array('username' => $username, 'password' => md5($password));

            $data = $this->m_perpus->edit_data($where, 'admin');
            $d = $this->m_perpus->edit_data($where, 'admin')->row();
            $cek = $data->num_rows();

            if ($cek > 0) {
                $session = array('id' => $d->id_amin, 'nama' => $d->nama_admin, 'status' => 'login');
                $this->session->set_userdata($session);
                redirect(base_url().'admin');
            }
            else{
                redirect(base_url().'welcome?pesan=gagal');
            }

        }else{
            $this->load->view('login');
        }
    }
}