php send email with attachment

1    $filename = 'myfile';
2    $path = 'your path goes here';
3    $file = $path . "/" . $filename;
4
5    $mailto = 'mail@mail.com';
6    $subject = 'Subject';
7    $message = 'My message';
8
9    $content = file_get_contents($file);
10    $content = chunk_split(base64_encode($content));
11
12    // a random hash will be necessary to send mixed content
13    $separator = md5(time());
14
15    // carriage return type (RFC)
16    $eol = "\r\n";
17
18    // main header (multipart mandatory)
19    $headers = "From: name <test@test.com>" . $eol;
20    $headers .= "MIME-Version: 1.0" . $eol;
21    $headers .= "Content-Type: multipart/mixed; boundary=\"" . $separator . "\"" . $eol;
22    $headers .= "Content-Transfer-Encoding: 7bit" . $eol;
23    $headers .= "This is a MIME encoded message." . $eol;
24
25    // message
26    $body = "--" . $separator . $eol;
27    $body .= "Content-Type: text/plain; charset=\"iso-8859-1\"" . $eol;
28    $body .= "Content-Transfer-Encoding: 8bit" . $eol;
29    $body .= $message . $eol;
30
31    // attachment
32    $body .= "--" . $separator . $eol;
33    $body .= "Content-Type: application/octet-stream; name=\"" . $filename . "\"" . $eol;
34    $body .= "Content-Transfer-Encoding: base64" . $eol;
35    $body .= "Content-Disposition: attachment" . $eol;
36    $body .= $content . $eol;
37    $body .= "--" . $separator . "--";
38
39    //SEND Mail
40    if (mail($mailto, $subject, $body, $headers)) {
41        echo "mail send ... OK"; // or use booleans here
42    } else {
43        echo "mail send ... ERROR!";
44        print_r( error_get_last() );
45    }
46