登录页面 login.php：

 

     'testp');            if($auth[$_GET['u']] == $_GET['p']){            $_SESSION['has_login'] = 1;            header("location:http://localhost/test/");        }else{            die('invalid user/pwd');        }        exit();        break;    case 'dosth':        if($_SESSION['has_login'])            exit("do sth");        else            exit("no privilege");        break;    default:         break;}?>