Are there any Parsing Expression Grammar (PEG) libraries for Javascript or PHP?

Question

I find myself drawn to the Parsing Expression Grammar formalism for describing domain specific languages, but so far the implementation code I\'ve found has been written in

Answer 1

There is in fact one for Javascript: OMeta. http://www.tinlizzie.org/ometa/

I also implemented a version of this in Python: http://github.com/python-parsley/parsley