var_dump($_POST);
$dezeUser = $_POST['email'];
// timestamp toevogen aan filename:
$_FILES["bestand"]["name"] = time() . '_' . $_FILES["bestand"]["name"];
try {
    if (isset($_POST['submit'])) {
        if (($_FILES["bestand"]["type"] == "image/gif" || $_FILES["bestand"]["type"] == "image/jpeg" || $_FILES["bestand"]["type"] == "image/png") && $_FILES["bestand"]["size"] < 2000000) {
            if ($_FILES["bestand"]["error"] > 0) {
                throw new Exception("Return Code: " . $_FILES["bestand"]["error"]);
                header('location: gebruiker-toevoegen.php');
            } else {
                define('ROOT', dirname(__FILE__));
                if (file_exists(ROOT . "/img/" . $_FILES["bestand"]["name"])) {
                    // dit in een while loop zetten
                    $_FILES["bestand"]["name"] = time() . '_' . $_FILES["bestand"]["name"];
                    $_SESSION['notification'][] = 'Gegevens werden succesvol gewijzigd.';
                } else {
                    move_uploaded_file($_FILES["bestand"]["tmp_name"], ROOT . "/img/" . $_FILES["bestand"]["name"]);
                }
                $afbeeldingNaam = $_FILES['bestand']['name'];
                $dbInst->uploadImgName($dezeUser, $afbeeldingNaam);
                header('location: gebruiker-toevoegen.php');
            }
        } else {
            throw new Exception('Ongeldig bestand');
        }
    }
} catch (Exception $e) {
    $_SESSION['notification'][] = $e->getMessage();
}
var_dump($_FILES);