I used to use dreamweaver religiously, but i have since started to use Notepad++ a free GNU licensed editor. It's much faster than dreamweaver and has many great plugins available.
Eclipse is bly and awkward for general use if you are doing huge project it fine and it's brother aptana studiio is also good.
For most everyday use and good prjoect control komodo edit is an excellent choice, not too much code completion but enhough to make novice and experiened users happy. Notepad++ is ok as well, but I just never got to liking it as my #1. I also find that geany is pretty usefull too. I like it because unlike most ide's that take 30+ sec to load when I want to do a quick edit it's up and running in nano secs...
I have used Winsyntax for many years and love it... http://www.winsyntax.com/ It's free and when fully loaded it comes with a full PHP manual. Just 'F1' with the cursor in a PHP command and the manual comes up. I like the fact that it not only highlights PHP files, but also HTML ones. Only thing it doesn't do is print. I have no idea why they would not include that function.