[Boost-users] boost::serialization bindings for PHP5 somewhere?

Hi, I need to send some structures (and receive answers, of course) from a PHP5 front-end to a C++ back-end that already communicates with another C++ front-end via boost::serialization over a socket. Easiest would be to teach PHP5 to talk the same language. I know I can write a specific PHP5 extension in C++ and use boost::serialization there. Question is if such a beast (or something equivalent) already exists. Thanks in Advance Mauro