if ($result) {
            $message = sprintf(get_lang('CourseRequestDeleted'), $course_request_code);
            $is_error_message = false;
        } else {
            $message = sprintf(get_lang('CourseRequestDeletionFailed'), $course_request_code);
            $is_error_message = true;
        }
    } elseif (isset($_POST['action'])) {
        switch ($_POST['action']) {
            // Delete selected courses
            case 'delete_course_requests':
                $course_requests = $_POST['course_request'];
                if (is_array($_POST['course_request']) && !empty($_POST['course_request'])) {
                    $success = true;
                    foreach ($_POST['course_request'] as $index => $course_request_id) {
                        $success &= CourseRequestManager::delete_course_request($course_request_id);
                    }
                    $message = $success ? get_lang('SelectedCourseRequestsDeleted') : get_lang('SomeCourseRequestsNotDeleted');
                    $is_error_message = !$success;
                }
                break;
        }
    }
} else {
    $link_to_setting = api_get_path(WEB_CODE_PATH) . 'admin/settings.php?category=Platform#course_validation';
    $message = sprintf(get_lang('PleaseActivateCourseValidationFeature'), sprintf('<strong><a href="%s">%s</a></strong>', $link_to_setting, get_lang('EnableCourseValidation')));
    $is_error_message = true;
}
/**
 * Get the number of courses which will be displayed.
 */