As mentioned by Elizabeth Naramore on the php|architect website, NuSPhere has announced the release of the latest version of their PHP IDE, PhpED 5.2.

Updates in this new edition include a PHP code navigator, code folding, support for custom headers, an embedded Mozilla browser and an improved manual (always a good thing). If you'd like to give it a shot in your development, check out the free trial or get the discount when you buy your own copy.