I do, though I did it to see what level the exam was so I could gauge how valuable it was when hiring.
I even editited the manual phpArch did to correct all the coding errors, though I don't think they ever updated it. Didn't even achknowedge it thinking about it, and Zend themselves who sell the book said "Oh it's not our problem".
So after that I didn't have the best opinion of the process, though the exam will prove basic understand of syntax and a little OO.