### **Too Much Java** ### A common criticism of use of interfaces in PHP is that it makes your code too much like "Java". What people mean is that it makes the code very verbose. You must define an interface and an implementation, which leads to a few extra key-strokes. For small, simple applications, this criticism is probably valid. Interfaces are often unnecessary in these applications, and it is "OK" to just couple yourself to an implementation you know won't change. There is no need to use interfaces if you are certain your implementation will not change. Architecture astronauts will tell you that you can "never be certain". But, let's face it, sometimes you are. Interfaces are very helpful in large applications, and the extra key-strokes pale in comparison to the flexibility and testability you will gain. The ability to quickly swap implementations of a contract will "wow" your manager, and allow you to write code that easily adapts to change. So, in conclusion, keep in mind that this book presents a very "pure" architecture. If you need to scale it back for a small application, don't feel guilty. Remember, we're all trying to "code happy". If you're not enjoying what you're doing or you are programming out of guilt. step back and re-evaluate.