bericht gedeelte wordt niet verzonden

Hallo,
Ik heb eindelijk een script kunnen vinden met attachment, die relatief makkelijk moet zijn om te wijzigen, maar nu wordt bij deze de bijlage verzonden, maar de tekst (inhoud = $_POST['body']) niet.

Weet iemand waar het aan ligt?
Ik denk dat de code verward is met de bijlage gedeelte maar ik weet iet hoe het te veranderen.

code:

<?
/* Mailer with Attachments */

$action = $_REQUEST['action'];
global $action;

function showForm() {
?>
 
  <form id="sendproject" enctype="multipart/form-data" name="send" method="post" action="<?=$_SERVER['PHP_SELF']?>">
  <input type="hidden" name="action" value="send" />
    <label>Name:</label>
    <input class="text" name="name" size="50" />

    <label>Subject:</label>
    <input class="text" name="subject" size="50" />
    
    <label>Email:</label>
    <input class="text" name="email" size="50" />
    
    <label>Project:</label>
    <input class="text" name="project" size="50" />
    
    <label>Attachment:</label>
    <input class="text" type="file" name="attachment" size="50" />
    
    <label>Message:</label>
    <textarea name="body" rows="10" cols="50"></textarea>
    
    <input type="submit" name="submit" value="Submit" /></p>
    </form>
  
<?
}

function sendMail() {
$MAX_FILE_SIZE = "10000000";
  if (!isset ($_POST['email'])) { //Oops, forgot your email addy!
    die ("<p>Oops!  You forgot to fill out the email address! Click on the back arrow to go back</p>");
  }
  else {
    $name = stripslashes($_POST['name']);
    $subject = stripslashes($_POST['subject']);
    $body = stripslashes($_POST['body']);
    $email = $_POST['email'];
    $attachment = $_FILES['attachment']['tmp_name'];
    $attachment_name = $_FILES['attachment']['name']; 
    if (is_uploaded_file($attachment)) { //Do we have a file uploaded?
      $fp = fopen($attachment, "rb"); //Open it
      $data = fread($fp, filesize($attachment)); //Read it
      $data = chunk_split(base64_encode($data)); //Chunk it up and encode it as base64 so it can emailed
        fclose($fp);
    }
    //Let's start our headers
    $headers = "From: $from_name<" . $email . ">\n";
    $headers .= "Reply-To: <" . $email . ">\n"; 
    $headers .= "MIME-Version: 1.0\n";
    $headers .= "Content-Type: multipart/related; type=\"multipart/alternative\"; boundary=\"----=MIME_BOUNDRY_main_message\"\n"; 
    $headers .= "X-Sender: $from_name<" . $_POST['from_email'] . ">\n";
    $headers .= "X-Mailer: PHP4\n";
    $headers .= "X-Priority: 3\n"; //1 = Urgent, 3 = Normal
    $headers .= "Return-Path: <" . $_POST['from_email'] . ">\n"; 
    $headers .= "This is a multi-part message in MIME format.\n";
    $headers .= "------=MIME_BOUNDRY_main_message \n"; 
    $headers .= "Content-Type: multipart/alternative; boundary=\"----=MIME_BOUNDRY_message_parts\"\n"; 
    
    $message = "------=MIME_BOUNDRY_message_parts\n";
    $message .= "Content-Type: text/plain; charset=\"iso-8859-1\"\n"; 
    $message .= "Content-Transfer-Encoding: quoted-printable\n"; 
    $message .= "\n"; 
    /* Add our message, in this case it's plain text.  You could also add HTML by changing the Content-Type to text/html */
	$message .= " Het geschreven bericht: \n<br />".$body;
    $message .= "\n"; 
    $message .= "------=MIME_BOUNDRY_message_parts--\n"; 
    $message .= "\n"; 
    $message .= "------=MIME_BOUNDRY_main_message\n"; 
    $message .= "Content-Type: application/octet-stream;\n\tname=\"" . $attachment_name . "\"\n";
    $message .= "Content-Transfer-Encoding: base64\n";
    $message .= "Content-Disposition: attachment;\n\tfilename=\"" . $attachment_name . "\"\n\n";
    $message .= $data; //The base64 encoded message
    $message .= "\n"; 
    $message .= "------=MIME_BOUNDRY_main_message--\n";

    // send the message
    mail("[email protected]", $subject, $message, $headers);
  }
}

switch ($action) {
  case "send":
    sendMail();
    showForm();
    break;
  default:
    showForm();
}

?>