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<?

$file = 'test.pdf';
$file_name = 'test.pdf';
$subject= 'Testing';
$from    = "krausse@test.de";
$message = 'Test';
$boundary = strtoupper(md5(uniqid(time())));
$mail_header  = "From:krausse@test.de\n";
$mail_header .= "MIME-Version: 1.0";
$mail_header .= "\nContent-Type: multipart/mixed; boundary=$boundary";
$mail_header .= "\n\nThis is a multi-part message in MIME format  --  Dies ist eine mehrteilige Nachricht im MIME-Format";
$mail_header .= "\n--$boundary";
$mail_header .= "\nContent-Type: text/plain";
$mail_header .= "\nContent-Transfer-Encoding: 8bit";
$mail_header .= "\n\n$message";
$file_content = fread(fopen($file,"r"),filesize($file));
$file_content = chunk_split(base64_encode($file_content));
$mail_header .= "\n--$boundary";
$mail_header .= "\nContent-Type: application/octetstream; name=\"$file_name\"";
$mail_header .= "\nContent-Transfer-Encoding: base64";
$mail_header .= "\nContent-Disposition: attachment; filename=\"$file_name\"";
$mail_header .= "\n\n$file_content";
$mail_header .= "\n--$boundary--";

if(mail("krausse@test.de",$subject,$message,$mail_header))
{
        echo 'Ok<br>';
}
else
{
        echo 'Fehler<br>';
}

?>

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<?PHP
include('htmlMimeMail.php'); 
$mail = new htmlMimeMail();
// attachment begin
$attachment = $mail->getFile("filetoattach.tar.gz");
$mail->addAttachment($attachment, "filetoattach.tar.gz", "application/gz");
// attachment end
$mail->setSubject("Betreff");
$mail->setText("email text....");
$mail->setFrom('Foo <sender@foo.de>');
$result = $mail->send(array('"Recipient" <recipient@foo.de>'));
?>