} else { if ($_REQUEST['action'] == 'delete_quiz') { $quiz_id = $_GET['quiz_id']; $model->deleteQuiz($quiz_id); $_SESSION['msg'] = "Quiz deleted successfully."; header('Location: index.php'); } else { if ($_REQUEST['action'] == 'manage_questions') { $quiz_id = $_REQUEST['quiz_id']; $result = $model->listQuestions($quiz_id); require_once $dir . 'html/manage_questions.php'; } else { if ($_REQUEST['action'] == 'delete_question') { $quiz_id = $_REQUEST['quiz_id']; $id = $_REQUEST['id']; $model->deleteQuestion($id); $_SESSION['msg'] = "Question deleted successfully"; $result = $model->listQuestions($quiz_id); require_once $dir . 'html/manage_questions.php'; } else { if ($_REQUEST['action'] == 'save_questions') { $quiz_id = $_POST['quiz_id']; $upload_type = explode('/', $_FILES['photo']['type']); if ($upload_type[0] == 'image') { array_walk($_POST, 'escapeString'); $model->saveQuestions($_POST); $_SESSION['msg'] = "Question added successfully"; } else { $_SESSION['msg'] = "Please upload valid photo."; } $result = $model->listQuestions($quiz_id);