ircg_msg

Send message to channel or user on server (PHP 4 >= 4.0.4, PHP 5 <= 5.0.5)
bool ircg_msg ( resource connection, string recipient, string message [, bool suppress] )

ircg_msg() will send the message to a channel or user on the server.

connection: A connection resource handle returned by ircg_pconnect().
recipient: A recipient starting with # or & will send the message to a channel, anything else will be interpreted as a username.
message: The message to be sent.
suppress: Setting the optional parameter suppress to a TRUE value will suppress output of your message to your own connection. This so-called loopback is necessary, because the IRC server does not echo PRIVMSG commands back to us.

Returns TRUE on success or FALSE on failure.