Multi-threaded port listener

[René Fournier <m5@xxxxxxxxxxxxxxxx>]

Anyone find any good tutorials, code samples, etc. on such a thing?  
Basically, I want to write server (in PHP) that listeners on a  
particular port, and spins off a thread/process (essentially, execute  
a separate script) for each incoming connection. There won't be a lot  
of data to process, but there will be many simultaneous connections— 
upwards of 1000s of connections (each spun off as seperate threads).

...Rene