/* 记录浏览历史 */if (!empty($_COOKIE['history'])){    if(stripos($_COOKIE['history'].',',$goods_id.',')===false){                $history = explode(',', $_COOKIE['history']);        array_unshift($history, $goods_id); //入栈                    while (count($history) > 5) //大于容器容量        {            array_pop($history); //出栈        }            setcookie('history', implode(',', $history), gmtime() + 3600 * 24 * 30);     }}else{    setcookie('history', $goods_id, gmtime() + 3600 * 24 * 30);}