In my recent post about Zend Studio, Gerd mentioned PHPEclipse, a PHP development plugin for Eclipse 3.x. I didn't know about it, and it is pretty good.

The setup is still pretty rough around the edges, particularly when going beyond just PHP and into the MySQL/Apache/Debugger stuff (basically you need separate plugins for each). I wasn't able to actually make the debugger work, but then again I didn't have a lot of time to spend on that.

In comparison, Zend Studio is well integrated and works really well, and at this point it blows PHPEclipse out of the water (Zend also has a built-in advantage since it's not only a company, but the founders are the creators of PHP). Zend does cost $249, as Gerd noted, so it's nice to see that in PHPEclipse there's a good option in the pipeline.