(PHP 5 >= 5.4.0)
SessionHandlerInterface::open — Initialize session
$save_path
, string $session_id
)Re-initialize existing session, or creates a new one. Called when a session starts or when session_start() is invoked.
save_path
The path where to store/retrieve the session.
session_id
The session id.
The return value of the session storage (usually 0 on success, 1 on failure).