Provide application specific logic to the session object.
$_instance= ''
$sessionId= ''
__clone( ) : void
__construct( ) : void
When constructing the session object, be sure to check if the session_id() already exists as is the case of session.auto_start = 1
__destruct( ) : void
__get( $var ) : void
__set( $var, $val ) : void
destroy( ) : void
getInstance( ) : void
setSessionId( $sessionId ) : void
start( ) : void