php send e-mail with attachment

Solution 1:

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

Solution 2:

Artefacto made me look at the output with more attention and i've found the fix:

function myMail($to, $subject, $mail_msg, $filename, $contentType, $pathToFilename){
    $random_hash = md5(date('r', time()));
    $headers = "From: [email protected]\r\nReply-To: ".$to;
    $headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\"";
    $attachment = chunk_split(base64_encode(file_get_contents($pathToFilename)));
    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: $contentType; name=\"$filename\" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

$attachment
--PHP-mixed-$random_hash--
";
$message = ob_get_clean();
$fh=fopen('log.txt','w');
fwrite($fh,$message);
$mail_sent = @mail( $to, $subject, $message, $headers );
return $mail_sent ? "Mail sent" : "Mail failed";
}