看了《PHP敏捷开发框架CodeIgniter》第五章前半部分的内容，做了个登录小实验，文件如下：
控制器文件：start.php
登录视图：entrypage.php, 很简单，就是输入用户名和密码！
主页：更简单，就是一行字，"you are right"。
start.php:
<?php
class Start extends CI_Controller
{
function __construct()
{
parent::__construct();
$this->load->helper('url');
$this->load->helper('form');
}
function index()
{
// $data['mytitle']="My site";
// $data['base']=$this->config->item('base_url');
// $data['css']=$this->config->item('css');
$data['mytitle']="A website to monitor other websites";
$data['text']="Please log in here!";
$this->load->view('entrypage',$data);
}
function assessme()
{
$this->load->library('session');
$name=$_POST['username'];
$password=$_POST['password'];
if($name=='fred' && $password=='12345')
{
$newdata=array('status'=>'ok');
$this->session->set_userdata($newdata);
$ip=$this->session->userdata('ip_address');
echo $ip;
$this->mainpage();
}
else
{
$this->index();
;}
}
function mainpage()
{
$this->load->view('mainpage');
}
}
?>
entrypage.php:
<html>
<head>
<title><?=$mytitle?></title>
</head>
<body>
<?=$text ?>
<?=form_open('start/assessme');?>
<input type="text" name="username" value="username"/>
<input type="text" name="password" value="hi"/>
<input type="submit" value="submit" />
<input type="reset" value="reset"/>
</form>
</body>
</html>
mainpage.php:
<html>
<head>
<title></title>
</head>
<body>
you are right!
</body>
</html>
