PHP: send mail with two attachment already exist in server

**the below code suggested in some site to send mail with attachment.

In the below code i have two attachment(TRYTEK.zip,TRYTEK.rar) in the server and with those attachment i want to send mail.

But the below code is not sending mail with those attachment. Its sending only a Blank mail.

Friends and Experts please tell me where i made a mistake. Give me a solution for this.

**

$files = array("TRYTEK.zip","TRYTEK.rar");
    $body = "email in html form";

    // email fields: to, from, subject, and so on
    $to = "$email";
    $from = "example@example.com";
    $subject = "email subject";
    $message = html_entity_decode($body);
    $headers = "From: $from";

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

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

    // multipart boundary
    $message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/html; charset=\"iso-8859-1\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";
    $message .= "--{$mime_boundary}\n";

    // preparing attachments
    for ($x = 0; $x < count($files); $x++) {
        $file = fopen($files[$x], "rb");
        $data = fread($file, filesize($files[$x]));
        fclose($file);
        $data = chunk_split(base64_encode($data));
        $message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$files[$x]\"\n" .
            "Content-Disposition: attachment;\n" . " filename=\"$files[$x]\"\n" .
            "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
        $message .= "--{$mime_boundary}\n";
    }

    // send

    $ok = @mail($to, $subject, $message, $headers);
    if ($ok) {
        echo "<p>mail sent to $to!</p>";
    } else {
        echo "<p>mail could not be sent!</p>";
    }