好吧，我有一个相当奇怪的问题，我已经坐在它上了一段时间没有成功。我的页面结构大致如下：
<?php
ob_start();
error_reporting(E_ALL);
然后我创建一个带有用户信息的数组，例如：
$USER = array('ID' => md5(uniqid(rand(),1)),
'referrer' => $_SERVER['HTTP_REFERER'],
etc.
);
这将有10个左右的条目。然后，我检查用户是否已经有我的cookie集，如果他们不设置我的cookie，我会（在输出之前，即在<html>标签之前进行任何内容）：
$data = base64_encode(serialize($USER));
setcookie('cookiename', $data, time()+86400*30, '/','mydomain.com',1,1);
到目前为止一切都很好。现在说用户然后导航到我的网站上的另一页。现在已经设置了cookie，因此，如果支票返回true，我会阅读以下内容：
$DUMMY = unserialize(base64_decode($_COOKIE['cookiename']));
现在，现在$假人应该具有与以前写给cookie的相同数组结构。真正令人困惑的是，当我尝试访问时：
$uid = $DUMMY['ID'];
我在error_log中得到警告：
PHP Notice: Undefined index: ID
这真的很奇怪，因为（1）只有在cookie存在时才读取cookie，如果存在，它应该具有" ID"元素，因为它首先是写入的（我确实有）以print_r($DUMMY);进行了双重和三重检查，所有元素都在那里）。此外，当我尝试使用$uid 时，我可以，即它确实具有应有的值。因此，一切似乎都还可以，除了我的error_log文件获得了这些PHP警告消息的1000秒。有什么想法吗？
我在页面页脚的末尾进行ob_end_flush();。谢谢。
P.S。：还有更多奇怪的事情正在发生。可以为了测试目的，我添加了一些IP过滤器，因此仅当我是访问页面的cookie脚本时才加载。它似乎有效，因为数据库中没有进一步的条目。但是，错误消息在error_log文件中不断滴答作响。我提供摘录：
[13-Dec-2017 01:04:34 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:04:35 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:05:06 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:05:07 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:05:38 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:05:39 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:06:10 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:06:11 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:06:42 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:06:43 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:07:14 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:07:15 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:07:46 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:07:47 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:08:18 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:08:20 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:08:50 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:08:51 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:09:22 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:09:23 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:09:54 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:09:55 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:10:26 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:10:27 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:10:58 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:10:59 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:11:30 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:11:31 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:12:03 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:12:03 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:12:35 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:12:35 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:13:07 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:13:07 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:13:39 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:13:39 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:14:11 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:14:11 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:14:43 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:14:43 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:15:15 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:15:15 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:15:47 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:15:47 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:16:19 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:16:19 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:16:51 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:16:51 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:17:23 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:17:23 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:17:55 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:17:55 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:18:27 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
[13-Dec-2017 01:18:27 Europe/Berlin] PHP Notice: Undefined index: ID in /home/xxxxxxxx/public_html/include/usertrack.inc.php on line 51
两件事让我很奇怪：1）为什么我首先看到它们，因为我的IP仅包含脚本，并且2）关于这些消息有一些奇怪的规律性。大约每30秒命中2次。
这是什么？某种攻击？但是，即使这是一些怪异的DDO，为什么攻击者会看到cookie脚本？我的IP过滤器是：
if ($_SERVER['REMOTE_ADDR'] == 'xxx.xxx.xxx.xxx') { // the x's would be my IP
require 'include/usertrack.inc.php';
flush();
}
这对我来说是绝对的曼。
哦，伙计...我很难过。我只是解决了。
好吧，我对目录结构进行了一些更改，并且正在运行自己的云服务器（使用ownCloud）。由于目录结构的变化，OwnCloud不再发现它应该与之同步的目录。因此，基本上，每30秒尝试与服务器联系以找到目录。由于它来自我的计算机，因此OwnCloud请求确实具有我的IP号，因此通过IP过滤器，但是由于无法找到目录，因此必须触发约404之类的目录。
我不确定owncloud提出了什么样的请求，但它一定触发了cookie脚本，甚至可能接受了cookie，但也许不允许我的脚本读取cookie或在设置的第二个或其他方面删除了cookie或将其删除。。无论哪种方式，现在我再次将owncloud指向正确的目录，错误消息停止出现并且错误_log已清洁。
男人...我生命的2天我永远不会回来！
对此感到抱歉。