Can I use SplFileObject to append data to the end of a file?

Can I use SplFileObject to append data to the end of a file? I can do this with file_put_contents with the flag FILE_APPEND ( file_put_contents($file, $data, FILE_APPEND) ) but SplFileObject doesn’t seem to have this. (http://www.php.net/manual/en/splfileobject.fwrite.php)

What about $open_mode in the constructor?
http://www.php.net/manual/en/splfileobject.construct.php

Ahh I see. I do not know linux and only know the r and w modes off hand. I didn’t realize there were others. The a+ mode seems to work. Thanks.