帝国CMS自动刷新首页的方法

<script language="javascript" type="text/javascript" src="/e/htmlindex/index_html.php"></script>

<?php 
require("../class/connect.php"); 
include("../class/db_sql.php"); 
include("../class/config.php"); 
include("../class/functions.php"); 
include("../class/t_functions.php"); 
require LoadLang("pub/fun.php"); 
require("../data/dbcache/class.php"); 
require("../data/dbcache/MemberLevel.php"); 
include("../class/chtmlfun.php"); 

$link=db_connect(); 
$empire=new mysqlquery(); 
$filepath_s="indexhtmlhc.txt"; 
$time=time(); 
@$filemtime=(int)filemtime($filepath_s)+1200; 
/* 
函数解释 
file_exists() 函数检查文件或目录是否存在。 
mkdir() 函数创建目录。 
time() 函数返回当前时间的 Unix 时间戳。 
filemtime() 函数返回文件内容上次的修改时间。 
*/ 
if (!file_exists($filepath_s)){ 
fopen($filepath_s, 'w'); 
@chmod($filepath_s, 0777); 
ReIndex(); 
}elseif(!file_exists($filepath_s) || (filemtime($filepath_s)+1200)<time()){
fopen($filepath_s, 'w'); 
@chmod($filepath_s, 0777); 
ReIndex(); 
}else{ 
// do nothing 
} 
db_close(); 
$empire=null; 
?>