IsOnline
From UODemo Wiki
integer isOnline(object PlayerObject);
This function will return 1 if the given object is a valid player object and if that player is online. Otherwise 0 is returned. Because a player object is required, passing any other object like NPC's will result in a return value of 0.
Internal Info: isOnline == Player->pflags & 0x04
Return to the Command List.
