Multi attachment email issue - php

Question

I have a problem with sending mail attachments , when you leave the empty not including any attachment. Message comes to mail with the extension .asc, it has file size 3 bytes , I would like to stop including this .asc file when attachment was not chosen.
This is the Form code
<?php
/*
error_reporting(E_ALL);
ini_set('display_errors', 1);
*/
if(isset($_FILES) && (bool) $_FILES) {
$allowedExtensions = array("pdf","doc","docx","gif","jpeg","jpg","png","rtf","txt","");
$files = array();
foreach($_FILES as $name=>$file) {
$file_name = $file['name'];
$temp_name = $file['tmp_name'];
$file_type = $file['type'];
$path_parts = pathinfo($file_name);
$ext = $path_parts['extension'];
if(!in_array($ext,$allowedExtensions)) {
die("File $file_name has the extensions $ext which is not allowed");
}
array_push($files,$file);
}
$to = "kontakt#lookslike.pl";
$from = "www.jakasstrona.eu";
$subject = $_POST['imie'];
$message = 'Imię: ' . $_POST['imie'] . "\r\n" .
$message = 'Nazwisko: ' . $_POST['nazwisko'] . "\r\n" .
$message = 'PESEL: ' . $_POST['pesel'] . "\r\n" .
$message = 'NIP: ' . $_POST['nip'] . "\r\n" .
$message = 'Data urodzenia: ' . $_POST['data'] . "\r\n" .
$message = 'Data urodzenia: ' . $_POST['data2'] . "\r\n" .
$message = 'Data urodzenia: ' . $_POST['data3'] . "\r\n" .
$message = 'Obywatelstwo: ' . $_POST['obywatelstwo'] . "\r\n" .
$message = 'Typ: ' . $_POST['typ'] . "\r\n" .
$message = 'Numer Dokumentu: ' . $_POST['nr'] . "\r\n" .
$message = 'Data ważności dokumentu: ' . $_POST['datawaz'] . "\r\n" .
$message = 'Adres, ulica, numer budynku, mieszkania: ' . $_POST['long'] . "\r\n" .
$message = 'Miejscowosc: ' . $_POST['miejscowosc'] . "\r\n" .
$message = 'Kod: ' . $_POST['kod'] . "\r\n" .
$message = 'Poczta: ' . $_POST['poczta'] . "\r\n" .
$message = 'Województwo: ' . $_POST['woj'] . "\r\n" .
$message = 'Telefon komórkowy: ' . $_POST['telefonphon'] . "\r\n" .
$message = 'Telefon stacjonarny: ' . $_POST['telefonstac'] . "\r\n" .
$message = 'E-mail: ' . $_POST['email'] . "\r\n" .
$message = 'Data Wyjazdu: ' . $_POST['datawyj'] . "\r\n" .
$message = 'Data Wyjazdu: ' . $_POST['datawyj2'] . "\r\n" .
$message = 'Data Wyjazdu: ' . $_POST['datawyj3'] . "\r\n" .
$message = 'Doświadczenie zawodowe: ' . $_POST['doswiadczenie'] . "\r\n" .
$message = 'Doświadczenie w pracy zagranicą: ' . $_POST['doswiadczenieza'] . "\r\n" .
$message = 'Uprawnienia na wózki widłowe: ' . $_POST['uprawnienia'] . "\r\n" .
$message = 'Język Angielski: ' . $_POST['jezykang'] . "\r\n" .
$message = 'Język Niemiecki: ' . $_POST['jezyknie'] . "\r\n" .
$message = 'Uwagi: ' . $_POST['uwagi'] . "\r\n" .
$headers = "Od: $from";
// boundary
$semi_rand = md5(time());
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x"; // random
$headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\"";
// multi boundary
$message = "This is a multi-part message in MIME format.\n\n" . "--{$mime_boundary}\n" . "Content-Type: text/plain; charset=\"utf-8\"\n" . "Content-Transfer-Encoding: 7bit\n\n" . $message . "\n\n";
$message .= "--{$mime_boundary}\n";
for($x=0;$x<count($files);$x++){
/*
if (filesize($files[$x] == 3))
{
$y=5;
}
*/
$file = fopen($files[$x]['tmp_name'],"rb");
$data = fread($file,filesize($files[$x]['tmp_name']));
fclose($file);
$data = chunk_split(base64_encode($data));
$name = $files[$x]['name'];
$message .= "Content-Type: {\"application/octet-stream\"};\n" . " name=\"$name\"\n" .
"Content-Disposition: attachment;\n" . " filename=\"$name\"\n" .
"Content-Transfer-Encoding: base64\n\n" . $data . "\n\n";
$message .= "--{$mime_boundary}\n";
}
// sending
$ok = mail($to, $subject, $message, $headers);
if ($ok) {
echo "<p>Mail został wysłany do $to! </p>";
} else {
echo "<p>Mail nie został wysłany!</p>";
}
}
?>

Answer 1

I think if you don't send an attachment, you don't want to add the extra hash. See a simple tutorial here: http://webcheatsheet.com/php/send_email_text_html_attachment.php
maybe put:
if(count($files))
$message .= "--{$mime_boundary}\n";
Though generally, I agree that if you aren't doing this to learn how it is done, use an open source library for this kind of thing as suggested in the comments.