Ugh, I hope not. I've wedded Netbeans to my PHP development process (and projects) rather tightly so the thought of having to switch (especially to something I find inferior like Eclipse) makes me nervous.
I agree that Eclipse isn't the ideal IDE for PHP (or anything that's not java), but I don't mind it too much. Maybe it's just because I've gotten used to forcing it to do what I want.
I would love to know why you think netbeans is inferior to eclipse? Perhaps for Java, it's a different story, because Eclipse is so much better than NB.
The number one reason would be debugging. The debugging environment as it relates to PHP with Netbeans is simpler to configure and easier to use than with Eclipse. There are other reasons but I feel they are more subjective than the debugging issue. I've tried Eclipse many times over the years and have always either gone back to the old Zend IDE (before they moved to the Eclipse platform) or Netbeans (lately) in frustration.
To be honest, I frequently use Vim for quick editing but when debugging PHP Netbeans beats Eclipse hands down.