I recently asked a question regarding the resolution of dependencies between Unit of Work and Data Mapper classes: Dependency Injection and Unit of Work pattern - (which was answered by Gabor de Mooij - thx)
In PoEAA, Martin Fowler suggests using Separated Interface to manage these dependencies. My question is simple - is it actually possible to implement this pattern in PHP, or is it specific to Java interfaces? I've searched high and low and it's hard to find references to this pattern anywhere outside of PoEAA.
Yes, it is possible (why would you doubt that?). If you're looking for an example, you could check out the Cookie Pattern blog.