if ($_FILES['file']['size'][$key] > 0) {
$do_file = true;
$fname = strtolower($_FILES['file']['name'][$key]);
$fsize = $_FILES['file']['size'][$key];
}вот как я сделал
if ($_FILES['file']['size'][$key] > 0) {
$do_file = true;
$fname = strtolower($_FILES['file']['name'][$key]);
$fsize = $_FILES['file']['size'][$key];
}