<input type="file" name="gallery[]" multiple />

$id = time();
$year = date("Y");
$photo_path = "photos/$year/";
$zip_path = "sets/$year/";

$photo = $_FILES["photo"]["name"];
$gallery = $_FILES["gallery"]["name"];

move_uploaded_file($_FILES["photo"]["tmp_name"],"$photo_path" . $id . ".jpg"); // This Adds Photo To $photo_path
move_uploaded_file($_FILES["gallery"]["tmp_name"],"$zip_path"); // This Doesn't Add 5 Files To $zip_path