public function updateProdukt()
 {
     if ($_SESSION['loggedin'] == true) {
         $validering = new ValidationClass();
         if (count($validering->validation()) == 0) {
             $this->modell->updateProdukt();
             $this->template = $this->twig->loadTemplate('UpdateForm.twig');
             $this->template->display(array());
         } else {
             $this->template = $this->twig->loadTemplate('ErrorPage.twig');
             $this->template->display(array('errormessages' => $validering->validation(), 'postatdata' => $_POST));
         }
     } else {
         $this->login();
     }
 }
<?php

// Classes
include 'config/Classes.php';
$validation = new ValidationClass();
if (!isset($_POST['submit'])) {
    echo "<script type='text/javascript'>window.location='index.php'</script>";
} else {
    # get Variables
    $getUser = $_POST['user'];
    $getPass = $_POST['pass'];
    $getLevel = $_POST['level'];
    # do validation/checking function for login user
    $validation->validate_login($getUser, $getPass, $getLevel, 'user');
}
// end of php codes
// wrote by prianggaemilsyah a.k.a juniorsumbar