另一个未定义的索引（虽然定义了这个） [英] Another Undefined Index (this one's defined though)

问题描述

好吧，PHP正在抛出此错误（在日志中）并且它对应用程序非常不利。

Alright, PHP is throwing this error (in the log) and it's quite detrimental to the application.

PHP Notice:  Undefined index: sessid in methods.php on line 7

是的，我知道这个错误是什么意思是，我无法弄清楚的是为什么它明显被定义并说它未定义。以下是methods.php中的相关代码

Yes, I'm aware of what this error means, what I cannot figure out is why it's obviously defined and saying it's undefined. Here is the relevant code in methods.php

$sessid = mysql_real_escape_string($_REQUEST['sessid']);

现在，在你说没有它不明确!!!之前，这里是POST请求methods.php（是的，我也知道$ _REQUEST不可信任）。

Now before you go off and say that "NO IT'S UNDEFINED!!!", here is the POST request to the methods.php (and yes, I'm also aware that $_REQUEST "can't be trusted").

method=r&room=general&sessid=d0sma94yw4r4cdckv2ufhb&qid=1276957562382

如您所见， sessid显然是定义的，并被发送到methods.php。我以为我也会在这里抛出相关的查询。

As you can see, the sessid is obviously defined and is being sent off to the methods.php. I just thought I'd throw in the relevant query here too.

mysql_query('UPDATE active SET time=\''.$timestamp.'\' WHERE sessid=\''.$sessid.'\'');

是的，时间也定义为：

$time = time();

那么，这里有什么问题？

So, what is the issue here?

推荐答案

禁止使用拼写错误等，如果您的版本> = 5.3.0，您可能需要查看 request_order （或 variables_order 如果 request_order 为空，则ini-setting设置为。如果在这两个中没有设置'P'，则$ _POST数组将不在$ _REQUEST中（甚至不设置'P'不在 variables_order 据我所知）。请参阅： http://www.php.net/ manual / en / ini.core.php＃ini.request-order

Barring typos etc, if you have a version >= 5.3.0, you might want to check what request_order (or variables_order if request_order is empty) ini-setting is set to. If in none of those two the 'P' is set, the $_POST array will not be in $_REQUEST (and not even set it the 'P' is not in variables_order afaik). See: http://www.php.net/manual/en/ini.core.php#ini.request-order

如果那些2都没问题，我会说你在某处有逻辑错误否则，var_dump（） $ _ POST 和 $ _ REQUEST 要检查的超级全局。

If those 2 are allright, I'd say you have a logical error somewhere else, var_dump() the $_POST and $_REQUEST superglobals to check.

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