php生成word文档并下载代码

php教程生成word文档并下载代码
include("include/conn_mysql教程.php");
  $id=$_GET["id"];
  $sql="select * from  down where id=$id ";
  $result=mysql_query($sql);  
  $row=mysql_fetch_row($result);
  $file2=$row["upload"];
 
function downFile($sFilePath)
{
   if(file_exists($sFilePath)){
       $aFilePath=explode("/",str_replace("","/",$sFilePath),$sFilePath);
       $sFileName=$aFilePath[count($aFilePath)-1];
       $nFileSize=filesize ($sFilePath);
       header ("Content-Disposition: attachment; filename=" .basename($sFileName) );
       header ("Content-Length: " . $nFileSize);
       header ("Content-type: application/octet-stream");
       mb_convert_encoding(readfile($sFilePath),"utf-8","GB2312");
   }
   else
   {
       echo("文件不存在!");
   }
}

downFile($file2);
/*
这个生成word生成文档程序是从mysql数据库教程读取数据保存文件再用header来发送给浏览器。
*/