file is not attaching in mail

[arun_php]

Hello friends,

    i want to send the mail by using mail function but mail is working and all the data is receiving

,if i attached the file means attaching after sending  file name will beas "noname" with 0kb but i can download it please help me

<?php
if ($_SERVER['REQUEST_METHOD']=='POST')
{
$strname=ucfirst($_REQUEST["strname"]);
  $filename=$_FILES["strresume"]["name"];
    $filetype=$_FILES["strresume"]["type"];
    $filesize=$_FILES["strresume"]["size"];
    $filetemp=$_FILES["strresume"]["tmp_name"];
if($filetype=="application/octet-stream" or $filetype=="text/plain" or $filetype=="application/msword")
    {
    $message= '
            <table cellspacing="0" cellpadding="8" border="0" width="400">
            <tr>
               <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Name</strong></td>
                <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$strname.'</td>
            </tr> </table>';
            
              $subject = "Mail with doc file attachment";
              $to="[email protected]";
//$fp = fopen($strresume, "rb");
//   $file = fread($fp, $strresume_size);

//   $file = chunk_split(base64_encode($file));
    
    $filename= fopen($filetemp,'rb');
            $data=fread($filename,filesize($filetemp));
            $data=chunk_split(base64_encode($data));
            fclose($filename);
            $num = md5(time());
     $headers  = "From: Name<[email protected]>\r\n";
       $headers  .= "MIME-Version: 1.0\r\n";
       $headers  .= "Content-Type: multipart/mixed; ";
       $headers  .= "boundary=".$num."\r\n";
       $headers  .= "--$num\r\n";
$headers .= "Content-Type: text/html; charset=iso-8859-1\r\n";
       $headers .= "Content-Transfer-Encoding: 8bit\r\n";
       $headers .= "".$message."\n";
       $headers .= "--".$num."\n"; 
       $headers  .= "Content-Type:".$strresume_type." ";
       $headers  .= "name=\"".$strresume_name."\"r\n";
       $headers  .= "Content-Transfer-Encoding: base64\r\n";
       $headers  .= "Content-Disposition: attachment; ";
       $headers  .= "filename=\"".$strresume_name."\"\r\n\n";
       $headers  .= "".$file."\r\n";
       $headers  .= "--".$num."--";
      $dd = mail($to, $subject, $message, $headers);
   

     //fclose($fp);
     echo "sent";
     }else
     {
     echo "failed";
     }
     }