It is better to use GetMaxPlayers(); Because if you have 20(for example) defined players from server.cfg then there is no need to go till 500(MAX_PLAYERS equals to 500).
pawn Код:
for(new i=0; i<GetMaxPlayers(); i++;) { if(IsPlayerConnected(playerid)) { //Rest of the payday } }
here if(IsPlayerConnected(playerid)) or if(IsPlayerConnected(i)) ??