(no version information, might be only in CVS)
SAMConnection->isConnected() -- Queries whether a connection is established to a Messaging ServerCalling the "isConnected" method on a Connection object will check whether the PHP script is connected to a messaging server. No messages can be sent or received unless a connection has been established with a Messaging server.
This method returns TRUE if the SAMConnection object is successfully connected to a Messaging server or FALSE otherwise.