当PHP中没有活动时，会话将终止 [英] expire session when there is no activity in PHP

问题描述

我在Internet上找到了许多教程，当您在某个限制后（例如30分钟左右）使会话期满时，但是我想在没有活动的情况下使会话期满，
引用了著名的SO问题< a href = https://stackoverflow.com/a/1270960/1091386>解决方案很简单：

I found many tutorials on Internet when you expire a session after a certain limit, like after 30 minutes or so, But I want to expire a session when there is no activity, quoting from a famous SO question the solution is straight forward:

if (isset($_SESSION['LAST_ACTIVITY']) 
    && (time() - $_SESSION['LAST_ACTIVITY'] > 1800)) {
        // last request was more than 30 minutes ago
        session_unset();     // unset $_SESSION variable for the run-time 
        session_destroy();   // destroy session data in storage
    }
$_SESSION['LAST_ACTIVITY'] = time(); // update last activity time stamp

，但是我是否必须更新 $ _SESSION ['LAST_ACTIVITY'] 是否在每个请求上？

but do I have to update the $_SESSION['LAST_ACTIVITY'] on each request?

预先假定的答案是，但是我有一个包含200多个php页面的大型站点，更新 $ _ SESSION ['LAST_ACTIVITY '] 。

The pre-assumed answer is Yes, but I have a big site containing 200+ php pages and it's hectic to update $_SESSION['LAST_ACTIVITY'] on each request.

还有其他方法吗？在所有文件中，唯一的共同点是一个用于数据库连接的配置文件。

Is there any other way of doing this? The only common thing among all files is one config file for DB connection.

推荐答案

您还可以更新 $ _ SESSION ['LAST_ACTIVITY'] 每分钟仅一次（例如），但是会话将不会在恰好30分钟后销毁。

You could also update the $_SESSION['LAST_ACTIVITY'] only (eg) once per minute but than the session will not be destroyed after exactly 30 minutes.

if (isset($_SESSION["LAST_ACTIVITY"])) {
    if (time() - $_SESSION["LAST_ACTIVITY"] > 1800)) {
        // last request was more than 30 minutes ago
        session_unset();     // unset $_SESSION variable for the run-time 
        session_destroy();   // destroy session data in storage
    } else if (time() - $_SESSION["LAST_ACTIVITY"] > 60) {
        $_SESSION["LAST_ACTIVITY"] = time(); // update last activity time stamp
    }
}

最简单的方法为此，将代码放入配置文件中，因为我不希望您更改所有200个php文件。

And the easiest way to do this is put the code in the config file since I don't think you want to change all 200 php files.

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