SessionHandlerInterface::open

(PHP 5 >= 5.4.0)

SessionHandlerInterface::open — Initialize session

说明

abstract public bool SessionHandlerInterface::open ( string $save_path , string $name )

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

参数

save_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() - Get and/or set the current session name
The session.auto-start configuration directive.

用户评论:

svenr at selfhtml dot org (2013-04-30 21:28:21)

This method should acquire an exclusive lock on the resource that is about to be used to read and write the session data. The lock should only be released in the close method. Note that this will effectively serialize parallel requests, which affects performance for a single user session. Not locking the resource would on the other hand allow for race conditions if two or more parallel requests change the session data.