如何在自定义处理程序中反序列化会话数据 [英] How to unserialize session data in a custom handler

问题描述

我使用 sessionHandlerInterface 将会话保存在数据库中.一切正常.但我想从数据库中获取所有序列化数据，如

I have used sessionHandlerInterface to save the session in database. Everything works fine. but I want to get all the serialized data from the database like

SELECT data FROM session;

并希望他们在我输出数据时解码数据.我曾尝试使用 session_decode() 来操作 $_SESSION 数组本身，这会导致问题.我只想获取序列化数据并返回解码数据.

and want them to decode the data when i output those. i have tried using session_decode() which is manipulating $_SESSION array itself which is causing trouble. I just want to get the serialized data and return the decoded data.

这是保存在数据库中data列

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它在正常的会话处理中工作正常，它按应有的方式读取和写入会话到数据库.

It works fine with normal session handling, it reads and writes session to database as it should.

我想获取活动会话的所有数据.如果我使用从会话中选择数据.它返回上面的会话数据(编码)，我想获取它的解码数据.

I want to get all the data of active sessions. if i use SELECT data FROM sessions. it returns the above session data(encoded) i want to get the decoded data of it.

推荐答案

PHP serialize 和 unserialize 函数不能用于序列化和反序列化会话数据.即使(默认情况下 - 并且仅在默认情况下)序列化可能看起来相似，这两个关注单个变量内容的函数仍有重要区别only:

那些 [sessions] 是带有变量名称的序列化值列表.

Those [sessions] are a list of serialized values with their variable name.

(来自: 序列化自述文件)

因此您需要创建自己的 session_unserialize 函数来解码字符串(例如通过 session_decode) 从您的数据库返回.注意这需要里面的所有东西，例如如果会话包含序列化对象，则需要加载类定义.

So you would need to create your own a session_unserialize function that is able to decode the string (e.g. via session_decode) which is returned from your database. Take care that this needs everything in there, e.g. if the session contains serialized objects, the class definitions needs to be loaded.

一个示例性的 session_unserialize 函数可能看起来像(采用: 一个会话相关答案):

An exemplary session_unserialize function could look like (adopted from: a session related answer):

function unserialize_session($data) {
    $hasBuffer = isset($_SESSION);
    $hasBuffer && $buffer = $_SESSION;
    session_decode($data);
    $session = $_SESSION;
    $hasBuffer ? $_SESSION = $buffer : unset($_SESSION);
    return $session;
}

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