send mail with attachment in php

<?php
 $fname = $cust_info['customers_firstname'] ;
 $lname = $cust_info['customers_lastname]'];
 $email = $cust_info['customers_email_address'];
 $address = $cust_info['customers_default_address_id'];
 $phone  = $cust_info['customers_telephone'] ;
 $fax = $cust_info['customers_fax'];
$body = "Name: $fname $lname\nPhone: $phone \nE-mail: $email \nFax: $fax ";
 $to=$_POST['admin_email'];
  $subject="Print Request ".$fame." ".$lname;
$from = $email;
 $mime_boundary="==Multipart_Boundary_x".md5(mt_rand())."x";
       // now we'll build the message headers
      $headers = "From: $from\r\n" .
       "MIME-Version: 1.0\r\n" .
          "Content-Type: multipart/mixed;\r\n" .
          " boundary=\"{$mime_boundary}\"";
       // here, we'll start the message body.
       // this is the text that will be displayed
       // in the e-mail
       $message=$body;
       // next, we'll build the invisible portion of the message body
       // note that we insert two dashes in front of the MIME boundary
       // when we use it
       $message = "This is a multi-part message in MIME format.\n\n" .
          "--{$mime_boundary}\n" .
          "Content-Type: text/plain; charset=\"iso-8859-1\"\n" .
          "Content-Transfer-Encoding: 7bit\n\n" .
       $message . "\n\n";
     foreach($_FILES as $userfile)
       {
          // store the file information to variables for easier access
          $tmp_name = $userfile['tmp_name'];
          $type = $userfile['type'];
          $name = $userfile['name'];
          $size = $userfile['size'];
          //echo $tmp_name."\n\n";
          // if the upload succeded, the file will exist
          if (file_exists($tmp_name))
          {
             // check to make sure that it is an uploaded file and not a system file
             if(is_uploaded_file($tmp_name))
             {
                // open the file for a binary read
                $file = fopen($tmp_name,'rb');
                // read the file content into a variable
                $data = fread($file,filesize($tmp_name));
                // close the file
                fclose($file);
                // now we encode it and split it into acceptable length lines
                $data = chunk_split(base64_encode($data));
             }
             // now we'll insert a boundary to indicate we're starting the attachment
             // we have to specify the content type, file name, and disposition as
             // an attachment, then add the file content.
             // NOTE: we don't set another boundary to indicate that the end of the
             // file has been reached here. we only want one boundary between each file
             // we'll add the final one after the loop finishes.
            $message .= "--{$mime_boundary}\n" .
                "Content-Type: {$type};\n" .
                " name=\"{$name}\"\n" .
                "Content-Disposition: attachment;\n" .
                " filename=\"{$fileatt_name}\"\n" .
                "Content-Transfer-Encoding: base64\n\n" .
             $data . "\n\n";
          }
       }
    // here's our closing mime boundary that indicates the last of the message
 /*     $message.="--{$mime_boundary}--\n";
       // now we just send the message
       if (@mail($to, $subject, $message, $headers))
       {
    ?>
<script>
        alert("Mail Sent Successfully.");
     //document.location = "index.php";
       document.prints1.submit();
     </script>
<?php }
  else
   {
   ?>
<script>
     alert("Message Not Sent, Please Try Again.");
      document.location = "index.php";
      </script>
<?
}
*/