[DRIFT_HUNTER]

They both do totally different things.

The first one, is used to format and send client message.

pawn Код:

new string[144];
format(string, sizeof(string), "%s %d", someStrVar, someIntVar);
SendClientMessage(playerid, color, string);

instead of doing all that you do

pawn Код:

SendClientMessage(playerid, color, "%s %d", someStrVar, someIntVar);

The second one is just checking few variables and prevents sending client message if player is inside menu, inside tutorial or his chatbox is off.