(PHP 5 >= 5.4.0, PHP 7)
SessionHandlerInterface::open — Initialize session
abstract 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.
path
The path where to store/retrieve the session.
name
The session name.
The return value (usually true on success, false on failure). Note this value is returned internally to PHP for processing.
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https://www.php.net/manual/en/sessionhandlerinterface.open.php