(PHP 4 >= 4.0.4, PHP 5 <= 5.0.5)
ircg_disconnect — Close connection to server
ircg_disconnect() will close a connection to a server previously established with ircg_pconnect().
A connection resource handle returned by ircg_pconnect().
A message for the disconnection.
如果成功则返回 TRUE，失败则返回 FALSE。