/** * Flushes the output. * * This method is called in response to fflush(). * * If you have cached data in your stream but not yet stored it into the * underlying storage, you should do so now. * * Note: If not implemented, FALSE is assumed as the return value. * * @return boolean Should return TRUE if the cached data was successfully stored (or if there was no data to store), or FALSE if the data could not be stored. */ public function stream_flush() { return $this->streamWrapper->flush(); }