I've been asked lately if the OpenSRS PHP Class is still in active development.
The answer is a bit more complicated.
First, I'm no longer with easyDNS so my need to actively develop the class for my own needs has diminished. However, I'm now working for Tucows (although in a non-domain-related capacity), so I'm not completely uninterested in it anymore. In fact, I think someone here is planning on writing up some documentation for my class.
Second, the PHP class simply works as-is. Part of the reason the class hasn't been updated in so long is because, unlike OpenSRS' old Perl packages, which needed to updated everytime OpenSRS added a feature, my PHP class is simply concerned with the communication protocol. This protocol hasn't really changed in two years or more.
So, there really hasn't been any need to update the code. You can rest assured that it works in it's current state.
That said, I've always been slightly disappointed in some of the features in the class and wanted to rewrite things. Possibly to take advantage of PEAR classes (for logging, for instance), and possible to take advantage of some PHP5 features (SimpleXML parsing, etc.). I might block out some time to do this, if demand warrants. And hey, a donation to the project would make that decision easier. :)
In the meantime, enjoy using the current, stable code.