test ini 78

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

class Admin_login {

    // SET SUPER GLOBAL
    var $CI = NULL;
    public function __construct() {
        $CI =& get_instance();
        $CI->load->library('session');
    }

    // Login
    public function login($username, $password) {
$CI =& get_instance();
        // Query untuk pencocokan data
        $query = $CI->db->get_where('admins', array(
                                        'username' => $username,
                                        'password' => sha1($password)
                                        ));

        // Jika ada hasilnya
        if($query->num_rows() == 1) {
            $row    =  $query; //$this->CI->db->query('SELECT * FROM admins WHERE username = "'.$username.'"');
            $user   = $row->row();
            $id     = $user->admin_id;
            $name   = $user->username;

            $CI->session->set_userdata('username', $username);
            $CI->session->set_userdata('name', $name);
            $CI->session->set_userdata('id_login', uniqid(rand()));
            $CI->session->set_userdata('id', $id);
            // echo $this->CI->session->userdata('username');
            // die();
$url = base_url().'admin/dashboard';
echo "<script>window.location.href = '{$url}';</script>";
            //redirect(base_url().'admin/dashboard', 'refresh');
        }else{
            $CI->session->set_flashdata('sukses','Oopss.. Username/password salah');
$CI->session->set_userdata('username', NULL);
            redirect(base_url().'admin/login');
        }
        return false;
    }

    // Cek login
    public function cek_login() {
$CI =& get_instance();
        var_dump( $CI->session->userdata('username'));
        die();
        if($this->CI->session->userdata('username') == '') {
            $this->CI->session->set_flashdata('sukses','Oops...silakan login dulu');
            redirect(base_url('admin/login'));
        }
    }

    // Logout
    public function logout() {
        $this->CI->session->unset_userdata('username');
        $this->CI->session->unset_userdata('akses_level');
        $this->CI->session->unset_userdata('name');
        $this->CI->session->unset_userdata('id_login');
        $this->CI->session->unset_userdata('id');
        session_destroy();
        $this->CI->session->set_flashdata('sukses','Terimakasih, Anda berhasil logout');
        redirect(base_url().'admin/login');
    }

}