function clear()
{
global $course_id;
admin_page_head("Deleting course data");
BoltEnrollment::delete_aux("course_id = {$course_id}");
BoltView::delete_aux("course_id = {$course_id}");
BoltResult::delete_aux("course_id = {$course_id}");
BoltXsetResult::delete_aux("course_id = {$course_id}");
BoltSelectFinished::delete_aux("course_id = {$course_id}");
BoltRefreshRec::delete_aux("course_id = {$course_id}");
BoltQuestion::delete_aux("course_id = {$course_id}");
echo "\n\t\tCourse data deleted.\n\t";
admin_page_tail();
}
$now = time();
$id = BoltXsetResult::insert("(create_time, user_id, course_id, name, score, view_id) values ({$now}, {$user->id}, {$course->id}, '{$xset->name}', {$avg_score}, {$view_id})");
$refresh_intervals = $xset->refresh;
if ($refresh_intervals) {
$refresh_rec = BoltRefreshRec::lookup("user_id={$user->id} and course_id={$course->id} and name='{$xset->name}'");
if ($refresh_rec) {
$count = $refresh_rec->count;
$n = count($refresh_intervals->intervals);
if ($count >= $n) {
$count = $n - 1;
}
$due_time = time() + $refresh_intervals->intervals[$count] * 86400;
$refresh_rec->update("create_time={$now}, xset_result_id={$id}, due_time={$due_time}");
} else {
$due_time = time() + $refresh_intervals->intervals[0] * 86400;
BoltRefreshRec::insert("(user_id, course_id, name, create_time, xset_result_id, due_time, count) values ({$user->id}, {$course->id}, '{$xset->name}', {$now}, {$id}, {$due_time}, 0)");
}
}
}
}
// show the answer page
if ($item->has_answer_page) {
srand($view_id);
$view_id = create_view($iter, BOLT_MODE_ANSWER, $view->id);
show_item($iter, $view_id, $view->id, BOLT_MODE_ANSWER, $repeat);
} else {
show_next($iter, $view);
}
break;
case 'answer_page':
$view = BoltView::lookup_id($view_id);
