[Zimon95]

Using an array and SetTimerEx function.

pawn Code:

//on top
new CommandUsed[MAX_PLAYERS];
forward CommandDelay(playerid);

//On command...
CommandUsed[playerid] = 1;
SetTimerEx("CommandDelay",3600000, false, "i", playerid);
if(CommandUsed[playerid] == 1) reuturn //SendClient...

//somewhere else
public CommandDelay(playerid)
{
CommandUsed[playerid] = 0;
return 1;
}