Editor that can view class hierarchy

[AP81]

Hi,

 

I am working on a *big* project with lots of classes,interfaces and inheritance.  I'd ideally like to be able to view an inheritance hierarchy without having to go through reams of PHPdoc.  I am running in a Linux box (Ubuntu) by the way.

 

For example, lets say I open the class file for class Three.  I'd like to be able to see something like below:

abstract class One
+
+- class Two extends One
+- class Three extends One
+-- class Three_One extends Three

Does anyone know if any IDE has this functionality? I'd even be happy if you can highlight a class name and search open files for the parent class...

 

Thanks