会话超时或空闲时自动重定向用户 [英] Automatically re-direct a user when session Times out or goes idle

问题描述

我想让一个计时器在页面上每3分钟运行一次（javascript），以检测php会话（$ _SESSION）是否超时......如果是，则自动重定向它们。

一个很好的例子，一个用户登录并运行楼梯，并且永远不会回来......我希望javascript通过一个简单的重定向来记录它们...... / p>

这可能吗？我怎么做这样的事情？我正在使用PHP和javascript。

编辑：
Rob在下面说的正是我正在寻找的......我安然无恙'quote \'...

我怀疑Mike要求的是当会话超时时，应该告诉浏览器导航离开当前页面。例如，一些银行在一段时间不活动后这样做。 - Rob Kennedy 5小时前

解决方案

您可以使用简单的元刷新：

 < meta http-equiv =refreshcontent =180; url = http://example.com/logout /> 
  

或者用PHP实现超时：

 在session_start（）; 
 if（isset（$ _ SESSION ['LAST_REQUEST_TIME']））{
 if（time（） -  $ _SESSION ['LAST_REQUEST_TIME']> 180）{
 //会话超时，上次请求超过3分钟前
 $ _SESSION = array（）; 
 session_destroy（）; 
} 
} 
 $ _SESSION ['LAST_REQUEST_TIME'] = time（）; 
  

如果会话仍然有效，则无需每隔3分钟检查一次。

I want to have a timer going to run every 3 minutes on the page (javascript), to detect if a php session ($_SESSION) has timed out... and if so, redirect them automatically.

A good example would be, a user logs in and runs up stairs, and never comes back down... I want the javascript to log them out with a simple redirect...

Is this possible? and how would I do such a thing? I am using PHP and javascript.

Edit: What Rob said below is exactly what I am looking for... and I safely \'quote \'...

I suspect what Mike is asking for is that when the session times out, the browser should be told to navigate away from the current page. Some banks do this after a period of inactivity, for example. – Rob Kennedy 5 hours ago

解决方案

You could use a simple meta refresh:

<meta http-equiv="refresh" content="180;url=http://example.com/logout" />

Or you implement a timeout with PHP:

session_start();
if (isset($_SESSION['LAST_REQUEST_TIME'])) {
    if (time() - $_SESSION['LAST_REQUEST_TIME'] > 180) {
        // session timed out, last request is longer than 3 minutes ago
        $_SESSION = array();
        session_destroy();
    }
}
$_SESSION['LAST_REQUEST_TIME'] = time();

Then you don’t need to check every 3 minutes if the session is still valid.

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