mysql *server* protocol implementation for PHP

[ewolf]

there are already some applications available which "understand" the mysql protocol and to which it's possible to connect using a mysql client -- for example: you can connect to the sphinx search engine using the (an) mysql client, mysql-proxy understands the mysql-protocol, too. etc.now i wonder if there is an implementation available in/for PHP so you could connect to some server-application implemented in PHP using the mysql client? i am looking for some PHP library (or extension) which implements the mysql protocol.thanks,harald