[SOLVED] E-mailed Attachments showing as "unknown" type...

[mem0ri]

I've just finished updating the mass e-mailer for a members-only site with the ability to add attachments...and have followed a couple of tutorials to make sure I got it right...

...but apparently I've missed something...because the files that show up in my gmail box show as unknown files with an unkown file type and have a set "size" of 1k.  (The subject/message/sender/etc are all fine)  I'll post my code below...please help:

Oh...another note...if I throw a die() in before the e-mail is sent out...the file IS recorded correctly in the $fileatt variables.

[code=php:0]
                                                  $from = $user['email'];
$subject = $_POST['subject'];
$body = stripchars($_POST['body']);
$fileatt = $_FILES['file_attach']['tmp_name'];
$fileatt_type = $_FILES['file_attach']['type'];
$fileatt_name = $_FILES['file_attach']['name'];
$headers = 'From:'.$from." \r\n".'Reply-To:'.$from. " \r\n";
$headers .= 'Date:'.date("r")."\n";
$headers .= 'Subject: '.$subject."\n";

if (is_uploaded_file($fileatt))
{
$file = fopen($fileatt,'rb');
$data = fread($file,filesize($fileatt));
fclose($file);

$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";

$headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";
$message = "This is a multi-part message in MIME format.\n\n"."--{$mime_boundary}\n"."Content-Type: text/plain; charset=\"iso-8859-1\"\n"."Content-Transfer-Encoding: 7bit\n\n".$message."\n\n";
$data = chunk_split(base64_encode($data));
$message .= "--{$mime_boundary}\n"."Content-Type: {$fileatt_type};\n"." name=\"{$fileatt_name}\"\n"."Content-Disposition: attachment;\n"." filename=\"{$fileatt_name}\"\n"."Content-Transfer-Encoding: base64\n\n".$data."\n\n"."--{$mime_boundary}--\n";
}
else
{
$headers .= 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-Type:text/html; charset=\"iso-8859-1\" \r\n"'; 
}

$sql = "SELECT id, email FROM user";
$query = mysql_query($sql);
while($row = mysql_fetch_array($query))
{
$id = $row['id'];
if($_POST[$id] == 1) $email_list[] = $row['email'];
}

if(isset($subject) && isset($body) && $subject != "" && $body != "")
{
for($x = 0; $x < count($email_list); $x++)
{
$headers .= "Message-ID: <".($x + 100). "@".$_SERVER['SERVER_NAME'].">". "\r\n";
$headers .= "To: ".$row['email']." \r\n";
mail($email_list[$x], $subject, $body, $headers);

if($x == 0 && count($email_list) > 1) echo("<span class=\"notification\">E-Mail sent to: ".$email_list[$x].", ");
else if($x == 0 && count($email_list) == 1) echo("<span class=\"notification\">E-Mail sent to: ".$email_list[$x]."</span>");
else if($x == (count($email_list) - 1) && $x != 0) echo($email_list[$x]."</span>");
else echo($email_list[$x].", ");
}
}
[/code]

[mem0ri]

Any help available on this topic?  I'm very stuck...and it's a rather important function...most of the e-mails we send out have attachments.