[Grim_]

Don't use a timer for this! Use timestamps

pawn Код:

stock MutePlayer(playerid, duration) {
    gPlayerMuteTime[playerid] = gettime() + duration;
}

public OnPlayerText(playerid, text[]) {
    if(gPlayerMuteTime[playerid] > gettime()) {
        SendClientMessage(playerid, 0xFF0000FF, "You are muted.");
        return 0;
    }
    return 1;
}

https://sampforum.blast.hk/showthread.php?tid=254915%5D