function delete() { $qnos = $_POST['qnos']; $qnos = explode('@', $qnos); include '../dao/QuestionDaoImpl.php'; $questionDao = new QuestionDaoImpl(); for ($i = 0; $i < count($qnos); $i++) { $result = $questionDao->delete($qnos[$i]); } $questions = $questionDao->queryAll(); session_start(); $_SESSION['questions'] = $questions; header('Location: /teacher/question.php'); }