SessionHandlerInterface::write Write session data &reftitle.description; abstract public boolSessionHandlerInterface::write stringsession_id stringsession_data Writes the session data to the session storage. Called by session_write_close, when session_register_shutdown fails, or during a normal shutdown. Note: SessionHandlerInterface::close is called immediately after this function. PHP will call this method when the session is ready to be saved and closed. It encodes the session data from the $_SESSION superglobal to a serialized string and passes this along with the session ID to this method for storage. The serialization method used is specified in the session.serialize_handler setting. Note this method is normally called by PHP after the output buffers have been closed unless explicitly called by session_write_close &reftitle.parameters; session_id The session id. session_data The encoded session data. This data is the result of the PHP internally encoding the $_SESSION superglobal to a serialized string and passing it as this parameter. Please note sessions use an alternative serialization method. &reftitle.returnvalues; &returns.session.storage.retval; &reftitle.seealso; The session.serialize_handler configuration directive.