PHP Ruby bridge

Hello Ruby users,

I’m searching for a PHP-Ruby bridge, something like the PHP Java bridge
at sourceforge. As I didn’t find anything except a serialization script,
I fear there doesn’t exist one.

Anyway, I think this would be really nice to have, as there are many
badly coded sites out there, that could need a Ruby migration…

Is there anybody with experience in this area? Where do I have to look
for, if I want to do it myself? Or is ist just too complicated? Are
there any bridges to other languages that could be used as a base?

Best regards
Gregor M.