Back in 2014 I wrote a small collection of PHP libraries, releasing 2.0.0 of the base library in 2015 for interacting with MediaWiki and Wikibase. My goal back then was to create a stable base that PHP bot frameworks could be built on, while also experimenting with some framework like features in surrounding libraries.
And now, version 3.0.0 has been released, with a couple of new features, such as OAuth authentication, and lots of refactoring to make the libraries easier to work with and contribute to.