if(PlayerInfo[playerid][pBanned] == 1)
{
//Message here blahblahblah
}

CMD:ban(playerid, params[])
{
    new pid;
    new ip[128];
    if(PlayerInfo[playerid][pAdmin] >= 3 || IsPlayerAdmin(playerid))
    {
        if(sscanf(params, "us[128]", pid, params[2])) return SendClientMessage(playerid,COLOR_RED, "USAGE: /ban <playerid/name> <reason>");
        if(pid == INVALID_PLAYER_ID) return SendClientMessage(playerid,COLOR_RED, "ERROR: Player is not connected!");
        if(pid == playerid) return SendClientMessage(playerid,COLOR_RED, "ERROR: You cant ban yourself!");
        new adminname[MAX_PLAYER_NAME], paramname[MAX_PLAYER_NAME], string[180];
        new year,month,day; getdate(year, month, day);
        new hour,minute,second; gettime(hour,minute,second);
        GetPlayerName(pid, paramname, sizeof(paramname));
        GetPlayerName(playerid, adminname, sizeof(adminname));
        format(string, sizeof(string), "Administrator %s has ban %s <Reason: %s> <Date: %d/%d/%d> <Time: %d:%d>",adminname,paramname, params[2],month,day,year,hour,minute);
        SendClientMessageToAll(COLOR_RED, string);
        SaveIn("BanLog",string);
        format(string, sizeof(string), "You have been ban by Administrator %s <Reason: %s>", paramname, params[2]);
        SendClientMessage(pid,COLOR_RED, string);
        format(string, sizeof(string), ""red"Administrator Bans You: %s\nTime: %d:%d\nDate: %d/%d/%d\nReason: %n\nNote:"white"If you are mistakely get banned go to our forums at [url]www.server.com\nand[/url] make unban appeal", adminname, params[2],hour,minute,month,day,year,params[2]);
        ShowPlayerDialog(pid,453, DIALOG_STYLE_MSGBOX,""white"Banned Info:",string,"Ok","");
        SendClientMessage(pid,COLOR_WHITE, "==============================================");
        format(string, sizeof(string), "You have been ban by Administrator %s <Reason: %s>", paramname, params[2]);
        SendClientMessage(pid,COLOR_RED, string);
        SendClientMessage(pid,COLOR_RED, "Make unban appeal at our forums. www.server.com");
        SendClientMessage(pid,COLOR_WHITE, "==============================================");
        format(string, sizeof(string), "You ban %s <Reason: %s>", paramname, params[2]);
        SendClientMessage(playerid,COLOR_RED, string);
        Ban(pid);
        format(ip,128,"%s**",ip);
        format(ip,128,"banip %s",params[2]);
        SendRconCommand(ip);
        new INI:File = INI_Open(UserPath(playerid));
        PlayerInfo[pid][pBanned] = 1;
        INI_WriteInt(File,"Banned",1);
        INI_Close(File);
        format(string,sizeof(string),"Administrator %s has banned %s",adminname,paramname);
        SendToAdmins(COLOR_GREY,string);
        format(string, sizeof(string), "Administrator %s has banned %s <Reason:%s>",adminname,paramname,params[2]);
        printf(string);
    }
    else return SendClientMessage(playerid,COLOR_RED, "ERROR: You must be Administrator Level 3 to use this command");
    return 1;
}

[data]
Password = 187367946
Cash = 999999990
Score = 99810
Admin = 10
Banned = 1 //Heres the part i want to check the ip too
Kills = 5981
//the IP checking would be here if needed
Deaths = 8

enum pInfo
{
    pPass,
    pCash,
    pScore,
    pAdmin,
    pKills,
    pFreeze,
    pBanned,
    pDeaths,
    pGod,
    pMute,
    pWarn,
};
new PlayerInfo[MAX_PLAYERS][pInfo];