simple_login

<?php if(! defined('BASEPATH')) exit('Akses langsung tidak diperbolehkan');

class Simple_login {
    // SET SUPER GLOBAL
    var $CI = NULL;
    public function __construct() {
        $this->CI =& get_instance();
    }
    // Fungsi login
    public function login($username, $password) {
        $query = $this->CI->db->get_where('users',array('username'=>$username,'password' => $password));
        if($query->num_rows() == 1) {
            $row    = $this->CI->db->query('SELECT id_user FROM users where username = "'.$username.'"');
            $admin  = $row->row();
            $id     = $admin->id_user;
            $this->CI->session->set_userdata('username', $username);
            $this->CI->session->set_userdata('id_login', uniqid(rand()));
            $this->CI->session->set_userdata('id', $id);
            redirect(base_url('admin/berita'));
        }else{
            $this->CI->session->set_flashdata('sukses','Oops... Username/password salah');
            redirect(base_url('admin/login'));
        }
        return false;
    }
    // Proteksi halaman
    public function cek_login() {
        if($this->CI->session->userdata('username') == '') {
            $this->CI->session->set_flashdata('sukses','Anda belum login');
            redirect(base_url('admin/login'));
        }
    }
    // Fungsi logout
    public function logout() {
        $this->CI->session->unset_userdata('username');
        $this->CI->session->unset_userdata('id_login');
        $this->CI->session->unset_userdata('id');
        $this->CI->session->set_flashdata('sukses','Anda berhasil logout');
        redirect(base_url('admin/login'));
    }
}