A: 

Zend Studio by Zend, has this feature. Along with quite a few more that really speeds up PHP development. It is not however, a free solution, but if you are doing some serious development it is generally recommended.

Noctrine
I know Zend has this feature for PHP, but are you saying it also extends to CakePHP?
sfjedi
No, I was just offering it as an alternate. Oh I see I misread the question.
Noctrine
+2  A: 

It is not an IDE, but if you are a textmate user, then there is a bundle for CakePHP: http://thechaw.com/cakephp_tmbundle

dhofstet
+6  A: 

You can get this functionality in Netbeans as described in this article from the bakery.

http://bakery.cakephp.org/articles/view/model-based-code-insight-and-completion-in-netbeans

You can also do the same thing in Eclipse PDT or Aptana.

http://mark-story.com/posts/view/code-completion-for-cakephp-in-eclipse

All of these IDEs are free. Although they are both

jimiyash
I just installed Aptana and I'm finding it extremely useful!
sfjedi
I like Aptana too. The css editor is pretty nifty on Aptana too. The only editor I like better is Textmate.
jimiyash
+1  A: 

Komodo Edit has a CakePHP addon and a macro to ease MVC navigation.

It is built on the Mozilla code base so is similarly extensible through addons, has equivalent memory consumption/speeds, and is licensed under the same terms.

Nearly forgot to mention, it is also cross-platform.

deizel
A: 

I use free PHP IDE Codelobster PHP Edition with special CakePHP plug-in.

Stas

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