带备注的 头文件加载文件

<?php
//开始session
session_start();
//设置utf-8编码
header('Content-Type:text/html;charset=utf-8');
//网站根目录
define('ROOT_PATH',dirname(__FILE__));
//引入配置信息
require ROOT_PATH.'/config/profile.inc.php';
//自动加载类
function __autoload($_className) {
if (substr($_className, -6) == 'Action') {
require ROOT_PATH.'/action/'.$_className.'.class.php';
} elseif (substr($_className, -5) == 'Model') {
require ROOT_PATH.'/model/'.$_className.'.class.php';
} else {
require ROOT_PATH.'/includes/'.$_className.'.class.php';
}
}
//缓存机制
require 'cache.inc.php';
//实例化模板类
$_tpl = new Templates();
?>