//后台程序sign.php源代码如下: 
<?require("../opendata.php");?> 
<? 
if($action=="sign") 
{ 
if($say==""||$title==""||$url==""||$size=="") 
{ 
header("location:../message.php?message=资料不完整&redirect=download/download.php?page=0%26action=publish"); 
break; 
}       $say=htmlspecialchars($say); 
        $title=htmlspecialchars($title); 
        $say=str_replace(" "," ",$say); 
        $say=nl2br($say); 
        $now_time=getdate(); 
        $ttime=$now_time["year"]."-".$now_time["mon"]."-".$now_time["mday"]." ".$now_time["hours"].":".$now_time["minutes"].":".$now_time["seconds"]; 
        $str="insert into download (title,say,click,ttime,url,size,type) values ('".$title."','".$say."',0,'#".$ttime."#','".$url."','".$size."',".$type.")"; 
        mysql_query($str,$cn); 
header("location:download.php?page=0&action=show"); 
} 
if($action=="download") 
{ 
     mysql_query("update download set click=click+1 where id=".$id,$cn); 
?> 
<? 
header("Content-type: text/html"); 
if(header("location:$url")) 
echo "error"; 
?> 
<html> 
<p align="center"><a href=https://www.jb51.net/"<?=$url?>">如果你的浏览器没有弹出下载窗口,请点这里</a></p> 
<p align="center"><a href="javascript:self.close()">关闭窗口</a></p> 
<p> </p> 
</html> 
<?}?> 
<?if($action=="mail") 
{ 
mail("khj99@163.net","该链接有问题,请更正","id=$id;程序名=$title;类别=$type","From:khj99@163.netnReply-To:khj99@163.netn"); 
header("location:download.php?action=show&type=$type"); 
} 
?> 
