chamilo / chamilo-lms

     */

    public static function load_session_categories($id = null, $session_id = null)

    {

        if (isset($id) && (int) $id === 0) {

            $cats = array();

            $cats[] = self::create_root_category();

            return $cats;

        }

        $courseInfo = api_get_course_info_by_id(api_get_course_int_id());

        $courseCode = $courseInfo['code'];

    ) {

        //if the category given is explicitly 0 (not null), then create

        // a root category object (in memory)

        if (isset($id) && (int) $id === 0) {

            $cats = array();

            $cats[] = self::create_root_category();

            return $cats;

        }

        $tbl_grade_categories = Database::get_main_table(TABLE_MAIN_GRADEBOOK_CATEGORY);

        $sql = 'SELECT * FROM '.$tbl_grade_categories;