首先我是用过codeigniter的，刚开始学框架的时候用过一阵子，然后后来公司用thinkphp，就没再用了，用了2个之后，就会有一些对比性。首先这2个框架文件夹容量都比较大，称不上轻量级之类的，我都不怎么看好。
今天单说codeigniter框架
举个官网控制器调用模板的例子
<?php
class Blog extends CI_Controller {
function index()
{
$data['title'] = "My Real Title";
$data['heading'] = "My Real Heading";
$this->load->view('blogview', $data);
}
}
?>
<html>
<head>
<title><?php echo $title;?></title>
</head>
<body>
<h1><?php echo $heading;?></h1>
</body>
</html>
感觉这种模式很不好，难道这就是传说中的控制器模板分离？这种模式只能忽悠刚刚入门的那些PHPer，先不论调用smarty之类的来反驳我，只是说他的自身特性，而且什么框架都能结合smarty来用。
以上的代码用PHP的一个函数就能实现了，请查阅extract函数的用法。
很多用codeigniter的PHPer估计就是冲着所谓写法优美去的，可以用连贯写法-> ->
究其实质，并没有对模板（视图）产生有多大的作用，
只是把变量全部先计算出来，换个名称，再在需要的时候，把新名称填入到所需地方。
然后个人在国外网站闲逛的时候呢，发现一个模板，它和codeigniter的这种模式有很大的相似性。模板名未知，就叫他template吧。你们可以看看，就可以对codeigniter原理有大致的了解吧
它的核心模板代码我写一下
<?php
//template.php
/**
* Copyright (c) 2003 Brian E. Lozier (brian@massassi.net)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
class Template {
var $vars; /// Holds all the template variables
var $path; /// Path to the templates
/**
* Constructor
*
* @param string $path the path to the templates
*
* @return void
*/