I just upgraded to Aptana 3 and seem to have lost some of the great functionality I had in Eclipse. So far I can\'t figure out how to re-enable it.
Specifically, I need
You'll need to work on a project that was created or re-defined as Aptana PHP project. Doing so enables the advanced features you are looking for.
In case you are creating a new project, use the Aptana PHP project wizard.
In case you already have projects in your workspace, you'll have to add the 'Aptana PHP Nature' to your project:
This should do it (and if it doesn't, restart the studio).
Hope that helps!