Has anyone tried the new Aptana IDE 1.0 with the PHP plugin? I’ve been experimenting with it for a week or so and it’s pretty nice. In comparison to the Eclipse PDT, Aptana offers much nicer HTML, CSS and Javascript features. However, PDT is still a more capable PHP editor.
If you have been using a plain text editor up until now, it may be worth taking a look since it’s free and runs on all platforms. The developers are also very responsive to user requests in the forums and enhanced PHP features are in the works.
Unfortunately, I haven’t found an editor that enables true code introspection and hinting for CI, since the “$this->....->....” is usually too abstract.