ThinkPHP3.2.3学习笔记4---统计ThinkPHP3.2.3加载的文件

将ThinkPHP3.2.3的入口文件index.php加入一个函数getIncludeFiles，文件内容变成如下所示:

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用入口文件

// 检测PHP环境
if(version_compare(PHP_VERSION,'5.3.0','<'))  die('require PHP > 5.3.0 !');

// 开启调试模式 建议开发阶段开启 部署阶段注释或者设为false
define('APP_DEBUG',True);

// 定义应用目录
define('APP_PATH','./Application/');

// 引入ThinkPHP入口文件
require './ThinkPHP/ThinkPHP.php';

// 亲^_^ 后面不需要任何代码了 就是如此简单

getIncludeFiles();

function getIncludeFiles() {
    $files = get_included_files();

    $fileCount = count($files);
    echo "ThinkPHP3.2.3框架共加载{$fileCount}个文件<br />
";
    $i = 0;
    foreach ($files as $file) {
        $i++;
        echo "{$i}、Included file {$file}...<br />
";
    }
}
?>

在浏览中访问http://localhost:81/research/thinkphp_3.2.3_full/index.php

输出如下：
ThinkPHP3.2.3框架共加载27个文件
1、Included file E:myphp esearch hinkphp_3.2.3_fullindex.php...
2、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPThinkPHP.php...
3、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkThink.class.php...
4、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkStorage.class.php...
5、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkStorageDriverFile.class.php...
6、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPModecommon.php...
7、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPCommonfunctions.php...
8、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkHook.class.php...
9、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkApp.class.php...
10、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkDispatcher.class.php...
11、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkRoute.class.php...
12、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkView.class.php...
13、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryBehaviorBuildLiteBehavior.class.php...
14、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryBehaviorParseTemplateBehavior.class.php...
15、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryBehaviorContentReplaceBehavior.class.php...
16、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPConfconvention.php...
17、Included file E:myphp esearch hinkphp_3.2.3_fullApplicationCommonConfconfig.php...
18、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLangzh-cn.php...
19、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPConfdebug.php...
20、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkLog.class.php...
21、Included file E:myphp esearch hinkphp_3.2.3_fullApplicationHomeConfconfig.php...
22、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryBehaviorReadHtmlCacheBehavior.class.php...
23、Included file E:myphp esearch hinkphp_3.2.3_fullApplicationHomeControllerIndexController.class.php...
24、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryThinkController.class.php...
25、Included file E:myphp esearch hinkphp_3.2.3_fullApplicationRuntimeCacheHome20914c0f075f91df3579ffbdf5180b02.php...
26、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryBehaviorWriteHtmlCacheBehavior.class.php...
27、Included file E:myphp esearch hinkphp_3.2.3_fullThinkPHPLibraryBehaviorShowPageTraceBehavior.class.php...

总结：
只是访问入口文件index.php，没有完成任何功能，就加载了27个文件，如果要调用具体的业务逻辑加载的文件还会更多，而且业务中可能还会调用数据库、NoSQL、文件系统、消息队列等系统，一个请求从开始到结束的时间可能会更长。

对于高并发、高可用、高性能的分布式系统来说，性能显得尤为重要，使用框架可能会提高开发效率，但是对性能可能会有一些影响，所以有些大公司采用自己写的框架或不用框架来开发项目。

延伸阅读：
http://www.baidu.com/s?wd=thinkphp%20性能优化
http://www.sogou.com/web?query=thinkphp%20性能优化
https://www.so.com/s?q=thinkphp%20性能优化
http://www.baidu.com/s?wd=程序%20性能优化
http://www.sogou.com/web?query=程序%20性能优化
https://www.so.com/s?q=程序%20性能优化