blocks|key|444946|text|您可以销毁会话，但在此之前，请将最后一个页面保存到一个变量中，然后将该变量放入一个新的会话变量中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|444947|$lastPage+=$_+session‘’last_page‘$session_destroy()；然后创建一个包含$lastPage的新会话。|444948|另一种方法是将用户访问的最后一个页面保存到数据库的用户记录中。(这将使它可以从任何地方访问，而不是特定于位置)|444949|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Well you can destroy the session but before doing so, save the last page into a variable that you will be putting in a new session variable.

$lastPage = $_SESSION['last_page']
$session_destroy();
then create a new session with the $lastPage in it. 

Another way is to save the last page the user visited into the user record of your db. 
(this will make it accessible from everywhere and it wont be location specific)

blocks|key|4326512|text|你可以试试下面的代码，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4326513|$Arr_not_destoy_session+=+array('last_visited_id');

++++++++foreach($_SESSION+as+$sees_key+=>+$sess_val+){
++++++++++++if(!in_array($sees_key,+$Arr_not_destoy_session)){
++++++++++++++++unset($_SESSION[$sees_key]);++++
++++++++++++}+++
++++++++}|code-block|syntax|javascript|4326514|这将取消设置除'last_visited_id‘之外的所有会话变量。only.you还可以在此数组中添加更多的值，您以后不想删除这些值。|4326515|谢谢。|4326516|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

you can try below code for this,

<pre><code>$Arr_not_destoy_session = array('last_visited_id');

 foreach($_SESSION as $sees_key =&gt; $sess_val ){
 if(!in_array($sees_key, $Arr_not_destoy_session)){
 unset($_SESSION[$sees_key]); 
 } 
 }
</code></pre>

this will unset all the session variables except 'last_visited_id' only.you can also add more values in this array which you dont want to remove later on..

Thanks.

blocks|key|2426764|text|回到您现有的使用unset()的后备解决方案，您说这个问题有很多，但这不应该使它变得困难；我仍然认为这是一个很好的问题解决方案。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2426765|首先，您可以使用foreach()循环将它们全部取消设置；这只需要几行代码：|2426766|foreach($_SESSION+as+$key=>$value)+{
++++if($key+!=+"the_one_you_want_to_keep")+{
+++++++++unset($_SESSION[$key]);
++++}
}|code-block|syntax|javascript|2426767|另一种方法是在子数组中组织会话数据，这样您就可以通过取消设置单个顶级数组变量来清除它们，但保持其他子数组中的其他会话数据不变：|2426768|unset($_SESSION['user_data']);
//but+don't+unset+$_SESSION['data_to_keep']|2426769|希望这能有所帮助。|2426770|entityMap^0|8|7|0|8|9|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|12|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|13|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|T|$]]

Going back to your existing fall-back solution of using <code>unset()</code>, you say the issue with this is that there are a lot, but that shouldn't make it difficult; I still think this is a good solution to your problem.

Firstly, you could unset them all using a <code>foreach()</code> loop; this would only need a few lines of code:

<pre><code>foreach($_SESSION as $key=&gt;$value) {
 if($key != "the_one_you_want_to_keep") {
 unset($_SESSION[$key]);
 }
}
</code></pre>

Another way of doing it would be to organise your session data in sub-arrays, so that you can then clear them out by unsetting the single top-level array variable, but leaving the other session data in other sub-arrays untouched:

<pre><code>unset($_SESSION['user_data']);
//but don't unset $_SESSION['data_to_keep']
</code></pre>

Hope that helps.

blocks|key|2426802|text|尝试将会话变量分组到数组中，并取消设置它们，您只需在$_SESSION中取消设置一个或多个数组。例如，如果您将用户信息保留在会话中，请尝试执行以下操作：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2426803|$_SESSION['user_info']+=+array(...);|2426804|$_SESSION['last_visited_page']+=+'...';|2426805|注销后，您可以取消设置$_SESSION['user_info']并保留$_SESSION['last_visited_page']|2426806|entityMap^0|Q|9|0|0|10|0|0|13|0|B|M|10|U|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|M|$]]

Try to group you session variables in arrays and to unset them you'll just need to unset the one or several arrays in <code>$_SESSION</code>. For example if you keep the user info in the session, try this:

<code>$_SESSION['user_info'] = array(...);</code>

<code>$_SESSION['last_visited_page'] = '...';</code>

After logout you can just unset <code>$_SESSION['user_info']</code> and keep the <code>$_SESSION['last_visited_page']</code>

I am using session variables to control logins and page access. I use variables to control different user groups that a user belongs to, so I have quite a few session variables.

I also use a session variable to remember the users last visited page upon refresh.

When the user logs out, I use session_destroy(); to remove all variables.
What i would like to do is to maintain the last visited page variable even after the user has logged out.

I think I could do it by using the unset function on every other variable, but there are a lot, and was wondering if there was an easier way?

Thanks
Eds

Destroy session, but keep one variable set

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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我使用会话变量来控制登录和页面访问。我使用变量来控制用户所属的不同用户组，因此我有相当多的会话变量。我还使用一个会话变量来记住用户在刷新时最后一次访问的页面。当用户注销时，我使用session_destroy()；删除所有变量。我想要做的是维护最后访问的页面变量，即使用户已经注销。我想我可以通过对每个其他变量使用uns...

问销毁会话，但保留一个变量集
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