public function randomExam()
{
$request = self::$_appInstance->request();
$data = json_decode($request->post('data'));
$exams = array();
//loop through exams data
foreach ($data as $key => $value) {
$questions = Exam::getInstance()->getRandomQuestion($value->id, $value->num);
$exams = array_merge($exams, $questions);
}
$response = array('isError' => true, 'exams' => null);
if (isset($exams)) {
$workingQuestions = array();
foreach ($exams as $question) {
array_push($workingQuestions, $question['id']);
}
$_SESSION['random_questions'] = serialize($exams);
$_SESSION['questions_id'] = serialize($workingQuestions);
$response['isError'] = false;
$response['exams'] = self::processExam($exams);
$response['questions_id'] = $_SESSION['questions_id'];
} else {
$response['error_text'] = 'ไม่พบข้อมูลข้อสอบ';
}
echo json_encode($response);
}
<?php
require_once 'Repository/Exam.php';
require_once 'libs/Membership.php';
require_once 'Repository/ExamStore.php';
$user_id = $_POST['user_id'];
$exam_id = $_POST['exam_id'];
$exam = Exam::getInstance();
$questions = $exam->getExistingExam($exam_id);
$index = 1;
$html = '';
$tempData = array();
if (isset($questions) && $questions != null) {
//validate null
foreach ($questions as $question) {
$tempData[$index]['question_id'] = $question['question_id'];
$tempData[$index]['answer'] = $question['answer'];
$index++;
}
$content = "<tr><td>ข้อสอบข้อที่</td><td>หมายเลขข้อสอบจากคลังข้อสอบ</td><td>เฉลย</td></tr>";
$flag = false;
$index = 1;
foreach ($tempData as $answer) {
$content .= "<tr><td>{$index}</td><td>" . $answer['question_id'] . "</td> <td>" . $answer['answer'] . "</td></tr>";
$index++;
}
header("Content-type: application/vnd.ms-excel");
header("Content-Disposition: attachment;Filename=เฉลยปัญหาข้อสอบ.xls");
header("Pragma: no-cache");
header("Expires: 0");
echo "<html>";
