PHP generates Word documents and downloads code

PHP Tutorial Generate Word document and download code
include ("Include/conn_mysql Tutorial. php");
  $id =$_get["id";
  $sql = "SELECT * from  down where id= $id ";
  $result =mysql_query ($sql);  
  $row =mysql_fetch_row ($result);
  $file 2= $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 ("file does not exist!");
  }
}

Downfile ($file 2);
/*
This generates a Word generation document program that reads data from a MySQL database tutorial and then sends the header to the browser.
*/