Interview with Bulat Shakirzyanov

Today on Cal Evans' "Voices of the ElePHPant" there was an interview with Bulat Shakirzyanov. His comments about mocking PHP's built-in functions reminded me of this PHP built-in mocking library I had made a little while ago, then forgotten about. Bulat's example talks about `mkdir`, which the built-in mock library would handle, but for filesystem specific functionality, I also highly recommend vfStream. It allows you to create a virtual filesystem, comeplete with directory hierarchy and files with contents, all from within a unit test, and all without needing an actual filesystem.