SessionHandlerInterface::open

(PHP 5 >= 5.4.0, PHP 7, PHP 8)

SessionHandlerInterface::open — Initialize session

说明

public SessionHandlerInterface::open(string $path, string $name): bool

Re-initialize existing session, or creates a new one. Called when a session starts or when session_start() is invoked.

参数

path: The path where to store/retrieve the session.
name: The session name.

返回值

会话存储的返回值（通常成功返回 0，失败返回 1）。

参见

session_name() - 读取/设置会话名称
The session.auto-start configuration directive.

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User Contributed Notes 2 notes

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narf at devilix dot net ¶

7 years ago


The suggestion that you should free the lock as soon as possible is WRONG (and for some reason, I can't downvote it right now).

Releasing the lock before the write() call is as effective as not using locks at all. The whole point is that a concurrent read() HAS to be blocked until the session is closed, otherwise you'll have race conditions.

If you care about the performance aspect, you should take care to call session_write_close() as soon as possible instead.

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-1

tony at marston-home dot demon dot co dot uk ¶

4 years ago


Note that once $sessionName has been used to provide a value for $sessionId from the cookie data it is totally redundant as all further reading and writing of the session data is controlled by $sessionId.

If, for any reason, it becomes necessary to identify the value for $sessionName which is associated with the current $sessionId then you should use the value that was passed on the open() method. Attempting to use a value from an alternative source could have unexpected side effects.

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官方地址：https://www.php.net/manual/en/sessionhandlerinterface.open.php

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SessionHandlerInterface::open

说明

参数

返回值

参见

User Contributed Notes 2 notes