Евгений

if(time() >= strtotime($res->get('shareunpub'))){
            $count++;
            
            $res->set('price', $res->get('old_price'));
            $res->set('old_price', '');
            $res->set('options',[
                'sharecount' => '',
                'shareid' => '',
                'shareunpub' => ''
                ]);
            $res->save();
        }