[Toreno]

I don't get you, are you talking about something like this?

pawn Код:

stock IsPlayerNameRegistered(playerid) {
    new PlayerName[MAX_PLAYER_NAME], file[39];
    format(file, sizeof(file), "userfiles/%s.ini", PlayerName);
    if(fexist(file)) return SendClientMessage(playerid, -1, "This player name is already registered!");
    return 1;
}