Introduction to Net_Server
    Net_Server provides an interface to create daemon application based
    on the sockets extension of PHP 4. In order to use Net_Server you need
    a PHP version greater or equal PHP 4.2, it is meant to be used with
    PHP-CLI.
   
    Net_Server uses a driver based architecture that allows you to switch
    the drivers for your daemons. Currently a forking and a non-forking driver
    are available, others will follow.
   
    As Net_Server provides an abstraction layer for the sockets extension,
    you do not need internal knowledge about the PHP functions. All you have
    to do is implement callback functions for events in your daemon, like handling
    new connections or incoming data.