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PHP网站实例分析

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Release: 2016-06-13 10:36:52
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if(version_compare(PHP_VERSION,5.0.0,    die(ThinkPHP 1.* require_once PHP > 5.0 !); //提示并终止
}
//记录开始运行时间 bkJia注释
$GLOBALS[_beginTime] = microtime(TRUE);

//全局变量 TRUE表示秒与微秒相加

 

// ThinkPHP系统目录定义
if(!defined(THINK_PATH)) define(THINK_PATH, dirname(__FILE__));

//THINK_PATH的值是:d:www_4000Think_path

 

//dirname(dirname(__FILE__));得到的是文件上一层目录名
//dirname(__FILE__);得到的是文件所在层目录名

 

if(!defined(APP_NAME)) define(APP_NAME, md5(THINK_PATH));
//如果没有常量APP_NAME 将应用程序名加密 (bkJia中文网)

 

if(!defined(APP_PATH)) define(APP_PATH, dirname(THINK_PATH)./.APP_NAME);


if(!defined(RUNTIME_PATH)) define(RUNTIME_PATH,APP_PATH./Temp/);

//运行时路经

 

if(file_exists(RUNTIME_PATH.~runtime.php)) {
   // 运行时路径中有此文件,加载框架核心缓存文件
   // 如果有修改核心文件请删除该缓存(bkJia.com)
   require_once RUNTIME_PATH.~runtime.php;
}else{
   // 加载系统定义文件
   require_once THINK_PATH."/Common/defines.php";
   // 系统函数库
   require_once THINK_PATH."/Common/functions.php";
   // 加载编译需要的函数文件
   require_once THINK_PATH."/Common/runtime.php";
   // 第一次运行检查项目目录结构 如果不存在则自动创建
   if(!file_exists(RUNTIME_PATH)) {
       // 创建项目目录结构
       buildAppDir();
   }

   //加载ThinkPHP基类
   import("Think.Core.Base");


   //加载异常处理类
   import("Think.Exception.ThinkException");


   // 加载日志类
   import("Think.Util.Log");


   //加载Think核心类
   import("Think.Core.App");


   import("Think.Core.Action");


   import("Think.Core.Model");


   import("Think.Core.View");


   // 是否生成核心缓存
   $cache =  ( !defined(CACHE_RUNTIME) || CACHE_RUNTIME == true );
   if($cache) {
       if(defined(STRIP_RUNTIME_SPACE) && STRIP_RUNTIME_SPACE == false ) {
           $fun   =  file_get_contents;
       }else{
           $fun   =  php_strip_whitespace;
       }
       // 生成核心文件的缓存 去掉文件空白以减少大小
       $content    =  $fun(THINK_PATH./Common/defines.php);
       $content   .=  $fun(THINK_PATH./Common/functions.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Core/Base.class.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Exception/ThinkException.class.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Util/Log.class.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Core/App.class.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Core/Action.class.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Core/Model.class.php);
       $content   .=  $fun(THINK_PATH./Lib/Think/Core/View.class.php);
   }
   if(version_compare(PHP_VERSION,5.2.0,        // 加载兼容函数
       require_once THINK_PATH./Common/compat.php;
       if($cache) {
           $content .= $fun(THINK_PATH./Common/compat.php);
       }
   }
   if($cache) {
       file_put_contents(RUNTIME_PATH.~runtime.php,$content);//将字符串写入文件
       unset($content);//销毁$content
   }
}
// 记录加载文件时间
$GLOBALS[_loadTime] = microtime(TRUE);
?>

 

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