[Crayder]

If it were me, I'd use pInfo[id][Muted] to store the un-mute time.

Example:

pawn Код:

CMD:mute(playerid, params[])
{
    if(pInfo[playerid][pLevel] >= 1)
    {
        new id, time, reason[50];
        if(isnull(params)) return SendClientMessage(playerid, yellow, "Usage: /mute <Player ID> <Time in seconds> <Reason>");
        sscanf(params, "uus[50]", id, time, reason);
        if(IsPlayerConnected(id))
        {
            if(pInfo[playerid][pLevel] < pInfo[id][pLevel]) return ShowMessage(playerid, red, 6);
            if(!isnull(reason))
                format(Jstring,sizeof(Jstring),"Administrator %s has muted player '%s' | Reason: %s",GetName(playerid),GetName(id),reason);
            else
                format(Jstring,sizeof(Jstring),"Administrator %s has muted '%s'",GetName(playerid),GetName(id));
            
            SendClientMessageToAll(red, Jstring);
            pInfo[id][Muted] = gettime() + (time * 1000);
            CommandToAdmins(playerid,"mute");
            return 1;
        }
        else return ShowMessage(playerid, red, 2);
    }
    else return ShowMessage(playerid, red, 1);
}

CMD:unmute:
    pInfo[id][Muted] = 0;

OnPlayerText:
if(pInfo[id][Muted] > gettime())
    return 0;

This is WAY better than using timers.