Hey there! :)
While I tend to be a JavaScript expert, having worked so much on web apps has given me plenty of exposure to and experience with PHP, so I'd be happy to see what I could do for you. Could you provide a copy of the JavaScript that you were looking to convert to PHP? I'm curious just how complex/simple the base code is.
As for the standard "about me" formalities, I've been using JavaScript both professionally and as a hobby most of my life, and while I've only recently joined Freelancer.com, I've been freelancing as a JavaScript expert for quite some time now. By all means, feel free to check my profile for a few testimonials from past clients, as well as to get to know a bit more about me.
With that out of the way, I'd love to hear from you as soon as possible. Toss me a reply so we can get started right away! I look forward to working with you. :)