SlaLevel::getAlreadyUsedExecutionTime PHP Метод

    static function getAlreadyUsedExecutionTime($slts_id)
    {
        global $DB;
        $result = array();
        $query = "SELECT DISTINCT `execution_time`\n                 FROM `glpi_slalevels`\n                 WHERE `slts_id` = '{$slts_id}';";
        foreach ($DB->request($query) as $data) {
            $result[$data['execution_time']] = $data['execution_time'];
        }
        return $result;
    }