From LinuxConsultancy.co.uk:

This page has been put together to help PHP coders old and new find an editor that meets their needs. In most cases the editors here are excellent HTML editors too.

Updates, reviews, opinions are welcome; feel free to contact us.

They have created one of the larger lists of PHP editors that I've seen in a while. Several of them have reader comments on them, but all have links/platform/license information as well as a brief description.

Thanks to PHP Magazine for the pointer...