We have a million line codebase that uses a bunch of ZF1 functionality (validation, database, web services, ...) plugged into a bespoke core. Overall I can't sa

We have a million line codebase that uses a bunch of ZF1 functionality (validation, database, web services, ...) plugged into a bespoke core. Overall I can't say we had any complaints. What we used from it worked well, and adapting it to our needs was relatively easy. We never did use any of the MVC or routing features though. And we never upgraded to ZF2, mostly because there wasn't any real reason to.