请问这个代码是什么文件求大神

摘要:

<?php


//主域名301跳转到www


$redirect301=1; //301跳转开关,1代表打开,0代表关闭


$index_file=‘index.html’; //指定网站默认首页文件,DeDeCMS设置为index.html,不支持SSI(shtml/shtm)


if(substr($_SERVER['SERVER_NAME'],0,4)!='www.'&&$redirect301) //判断URL中是否带www


{


header('HTTP/1.1 301 Moved Permanently');


header('Location:http://www.'.$_SERVER['SERVER_NAME']); //301跳转到www


exit();


}


if(!file_exists(dirname(__FILE__).'/data/common.inc.php'))


{


header('Location:install/index.php');


exit();


}


//自动生成HTML版


if(isset($_GET['upcache']))


{


require_once (dirname(__FILE__). "/include/common.inc.php");


require_once DEDEINC."/arc.partview.class.php";


$GLOBALS['_arclistEnv'] = 'index';


$row = $dsql->GetOne("Select * From `dede_homepageset`");


$row['templet']= MfTemplet($row['templet']);


$pv = new PartView();


$pv-》SetTemplet($cfg_basedir .$cfg_templets_dir ."/". $row['templet']);


$pv-》SaveToHtml(dirname(__FILE__).'/index.html');


include(dirname(__FILE__).'/index.html');


exit();


}


include(dirname(__FILE__).'/'.$index_file); //联接网站默认首页文件


?>