With 288 lines of code (readably spaced, no comments) I’ve implemented the Inklog storage interface. It is only meant to be used by the system itself so, while it performs permissions checks based for accessing items, it does not actually authenticate that a user is who they say they are.
It’s almost complete. It’s lacking "search" capabilities. That should add another 100 lines or so.
Unfortunately, since error checking in PHP sucks, I have to go back through and implement my homegrown error checking routines. I’m not sure why I didn’t do that in the first place.