[DRIFT_HUNTER]

pawn Код:

public OnPlayerCommandPerformed(playerid, cmdtext[], success)
{
if(IsPlayerRegistered(playerid, name(playerid)) && PlayerNotSpawned[playerid] && success == 1)
          return SendClientMessage(playerid, COLOR_RED, "You must spawn first before using commands.");
}
CMD:ban(playerid, params[])
{
    if(playerMod(playerid)) return 0;

    //ban cmd code here

    return 1;
}

If you are using 0.3 server and ZCMD than OnPlayerCommandText is not called so we have two callback's
OnPlayerCommandPerformed(playerid, cmdtext[], success)
and
OnPlayerCommandReceived(playerid, cmdtext[])