Recently I needed to obfuscate PHP code. Nothing fancy, no bullet-proof protection needed. The goals were:
* complicate removing of license protection by an unexpierenced person, and
* prevent code re-use by a third party.
Few options a found in Google (in no specific order):
The first thing I was able to run was POBS, therefore I continued with it.
I love open source. Having sources, one can tune a tool. In my case, I needed that an obfuscator were able to run from command line. I played a bit with POBS and got success.
Thanks, Mark and Frank, for POBS!