/**
* Get the information result of a quiz
*
* @param int $user_id
* @param int $quiz_id
* @return array
*/
function learn_press_get_quiz_result($user_id = null, $quiz_id = null)
{
global $quiz;
if (!$user_id) {
$user_id = get_current_user_id();
}
$quiz_id = $quiz_id ? $quiz_id : ($quiz ? $quiz->ID : 0);
$questions = learn_press_get_quiz_questions($quiz_id);
$answers = learn_press_get_question_answers($user_id, $quiz_id);
$mark = 0;
$correct_questions = 0;
$wrong_questions = 0;
$empty_questions = 0;
$quiz_start = learn_press_get_user_quiz_data('_lpr_quiz_start_time', $user_id, $quiz_id);
$quiz_end = learn_press_get_user_quiz_data('_lpr_quiz_completed', $user_id, $quiz_id);
$mark_total = learn_press_get_quiz_mark($quiz_id);
$quiz_time = $quiz_end ? $quiz_end - $quiz_start : 0;
$info = false;
if ($questions) {
foreach ($questions as $question_id => $options) {
$ques_object = LPR_Question_Type::instance($question_id);
if ($ques_object && isset($answers[$question_id])) {
$check = $ques_object->check(array('answer' => $answers[$question_id]));
if ($check['correct']) {
//$mark += $check['mark'];
$correct_questions++;
} else {
$wrong_questions++;
}
$mark += isset($check['mark']) ? $check['mark'] : 0;
} else {
$empty_questions++;
}
}
$question_count = count($questions);
if (is_float($mark)) {
$mark = round($mark, 1);
}
$info = array('mark' => $mark, 'correct' => $correct_questions, 'wrong' => $wrong_questions, 'empty' => $empty_questions, 'questions_count' => $question_count, 'mark_total' => round($mark_total, 2), 'mark_percent' => round($mark / $mark_total, 2), 'correct_percent' => round($correct_questions / $question_count * 100, 2), 'wrong_percent' => round($wrong_questions / $question_count * 100, 2), 'empty_percent' => round($empty_questions / $question_count * 100, 2), 'quiz_time' => $quiz_time);
}
return apply_filters('learn_press_get_quiz_result', $info, $user_id, $quiz_id);
}
/**
* Get the time when user finished a quiz
*
* @since 0.9.6
*
* @param int $quiz_id
* @param int $user_id
*
* @return int
*/
function learn_press_get_quiz_end_time($quiz_id, $user_id = null)
{
if (!$user_id) {
$user_id = get_current_user_id();
}
$quiz_start = learn_press_get_user_quiz_data('_lpr_quiz_completed', $user_id, $quiz_id);
return apply_filters('learn_press_get_quiz_end_time', $quiz_start, $quiz_id, $user_id);
}
