'txt', \TempFile\Options::Filename => 'test', ]); print(sprintf('Tempfile: %s', $temp->getFilepath()) . PHP_EOL); file_put_contents($temp, 'Hello, world!'); print(sprintf('Filesize: %s', filesize($temp->getFilepath())) . PHP_EOL); sleep(10); print('Exiting...' . PHP_EOL); exit(0);