MIME mail

<?php
if(isset($_POST['submit'])){
	//scheidingsteken voor het e-mailtje (boundary)
	$bound = "web123456789core";
	
	//tekst uit het formulier
	$eigenaar = "Gert-Jan Bierkens";
	$mail_eigenaar = "[email protected]";
	$bezoeker = "John Johnson";
	$mail_bezoeker = "[email protected]";
	$titel = "titel";
	$bericht = "test";
	
	//het ge-uploade bestand
	$upload      = $_FILES['upload']['tmp_name']; 
	$bestandstype = $_FILES['upload']['type']; 
	$bestandsnaam = $_FILES['upload']['name'];
	
	//het bestand openen (read binary)
	if (is_uploaded_file($upload)) { 
		 $bestand = fopen($upload,'rb'); 
		 $inhoud = fread($bestand,filesize($upload)); 
		 fclose($bestand);
	}
	
	//headers voor mixed content
   	$headers = "From: " . $eigenaar . " <" . $mail_eigenaar . ">\r\n";
	$headers .= "To: " . $bezoeker . " <" . $mail_bezoeker . ">\r\n";
	$headers .= "Subject: " . $titel . "\r\n";
	$headers .= "Content-Transfer-Encoding: 7bit\r\n";
   	$headers .= "MIME-Version: 1.0\r\n";
   	$headers .= "Content-Type: multipart/mixed;";
	$headers .= "boundary=\"" . $bound . "\";";
    $headers .= "Content-Disposition:  attachment\r\n";

	$body = "--" . $bound;
	$body .= "Content-Type: text/html; charset=\"iso-8859-1\"\r\n";
	$body .= "Content-Transfer-Encoding: 7bit\r\n";
	$body .= $bericht;
			 
	$body .= "--" . $bound;
   	
	$body .= "Content-Type: application/octet-stream; name=" . $bestandsnaam . "\r\n";
	$body .= "Content-Transfer-Encoding: base64\r\n";
	$body .= "Content-disposition: attachment\r\n";
	$body .= chunk_split(base64_encode($inhoud)) . "\r\n";

	$body .= "--" . $bound; "--";
	
	mail($mail_eigenaar, $titel, $body, $headers);
}
?>
<form enctype="multipart/form-data" method="post" action="">
	<input type="file" name="upload" />
	<input type="submit" value="Verzenden" name="submit" />
</form>

</body>
</html>