Code:

<?php

$to      = "[email protected]";
$from    = $_POST['from'];
$subject = $_POST['subject'];
$message = $_POST['message'];

$fileatt      = $_FILES['fileatt']['tmp_name'];
$fileatt_type = $_FILES['fileatt']['type'];
$fileatt_name = $_FILES['fileatt']['name'];

$headers = "From: $from";

if (is_uploaded_file($fileatt)) {

  $file = fopen($fileatt,'rb');
  $data = fread($file,filesize($fileatt));
  fclose($file);

  $semi_rand = md5(time());
  $mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";

  $headers .= "\nMIME-Version: 1.0\n" .
              "Content-Type: multipart/mixed;\n" .
              " boundary=\"{$mime_boundary}\"";


  $message = "This is a multi-part message in MIME format.\n\n" .
             "--{$mime_boundary}\n" .
             "Content-Type: text/plain; charset=\"iso-8859-5\"\n" .
             "Content-Transfer-Encoding: 7bit\n\n" .
             $message . "\n\n";


  $data = chunk_split(base64_encode($data));


  $message .= "--{$mime_boundary}\n" .
              "Content-Type: {$fileatt_type};\n" .
              " name=\"{$fileatt_name}\"\n" .
             "Content-Disposition: attachment;\n" .
             " filename=\"{$fileatt_name}\"\n" .
              "Content-Transfer-Encoding: base64\n\n" .
              $data . "\n\n" .
              "--{$mime_boundary}--\n";
}

// salje mail
$ok = @mail($to, $subject, $message, $headers);
if ($ok) {
 Header("Location:hvala.html");
} else {
 Header("Location:kontakt.html");
}
?>

Code:


 <form method="post" action="mail.php">
                 <input type="text"name="from">
       <input type="text" name="subject" value="" />
        <textarea id="message" name="message" rows=8 cols=20></textarea>
        <input type="file" name="fileatt"  id="file"/>
        <input type="submit"  value="send">
    </form>