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email - php send e-mail with attachment

I can't seem to find the problem with this php function i wrote that should send an e-mail with attachment. I've been struggling with it for quite a while.

function myMail($to, $subject, $mail_msg, $filename, $contentType){

    $random_hash = md5(date('r', time()));
    $headers = "From: [email protected]
Reply-To: ".$to;
    $headers .= "
Content-Type: ".$contentType.
        "; boundary="PHP-mixed-".$random_hash.""";

    $attachment = chunk_split(base64_encode(file_get_contents($filename)));
    ob_start();

    echo "
--PHP-mixed-$random_hash
Content-Type: multipart/alternative; boundary="PHP-alt-$random_hash"

--PHP-alt-$random_hash
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

$mail_msg

--PHP-alt-$random_hash

--PHP-mixed-$random_hash--
Content-Type: text/plain; name="$filename" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--
";
    $message = ob_get_clean();
    $mail_sent = @mail( $to, $subject, $message, $headers );
    return $mail_sent ? "Mail sent" : "Mail failed";
}

Edit The problem is that the message of the mail is mixed with the file and send as an attachment.

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1 Answer

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by (71.8m points)

I've just looked at a couple of my emails, and I notice the the final attachment boundary ends with '--', while the opening boundary marker does not. In your code, you have:

--PHP-mixed-$random_hash--
Content-Type: text/plain; name="$filename" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--

Perhaps it should be:

--PHP-mixed-$random_hash
Content-Type: text/plain; name="$filename" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--

Have a look at the example here:

http://en.wikipedia.org/wiki/MIME#Multipart_messages


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