[StrikerZ]

PHP код:

CMD:unban(playerid, params[])
{
    if(PlayerInfo[playerid][pAdmin] >= 4 || PlayerInfo[playerid][pBanAppealer] >= 1)
    {
        new string[128];
        if(isnull(params)) return SendClientMessageEx(playerid, COLOR_WHITE, "USAGE: /unban [playername]");
        if(doesAccountExist(params))
        {
            OnPlayerOfflineLogin(params);
            if( PlayerInfo[MAX_PLAYERS][pPermaBanned] == 3 )
            {
                SendClientMessageEx( playerid, COLOR_WHITE, "Permanently banned accounts can only be unbanned via FTP." );
            }
            else
            {
                if( PlayerInfo[MAX_PLAYERS][pBanned] >= 0)
                {
                    PlayerInfo[MAX_PLAYERS][pBanned] = 0;
                    PlayerInfo[MAX_PLAYERS][pWarns] = 0;
                    PlayerInfo[MAX_PLAYERS][pDisabled] = 0;
                    RemoveBan(PlayerInfo[MAX_PLAYERS][pIP]);
                    print("OnPlayerOfflineLogin: Saving variables to file");
                    OnPlayerOfflineSave(params);
                    print("OnPlayerOfflineLogin: Variables saved properly");
                    format(string, 128, "AdmCmd: %s (IP:%s) was unbanned by %s.", params, PlayerInfo[MAX_PLAYERS][pIP], GetPlayerNameEx(playerid));
                    ABroadCast(COLOR_LIGHTRED,string,2);
                    new year, month,day;
                    new query[120];
                    format(query,sizeof(query),"DELETE FROM `bans` WHERE `name` = '%s'",params);
                    mysql_query(query, [Your mysql databse name]);
                    getdate(year, month, day);
                    format(string, sizeof(string), "AdmCmd: %s (IP:%s) was unbanned by %s. (%d-%d-%d)", params, PlayerInfo[MAX_PLAYERS][pIP], GetPlayerNameEx(playerid),month,day,year);
                    Log("logs/ban.log", string);
                    print(string);
                }
                else
                {
                    SendClientMessageEx( playerid, COLOR_WHITE, "Not a banned account!" );
                }
            }
        }
        else
        {
            SendClientMessageEx( playerid, COLOR_WHITE, "That account doesn't exist." );
        }
    }
    else
    {
        SendClientMessageEx(playerid, COLOR_GRAD1, "You are not authorized to use that command!");
    }
    return 1;
} 


You were missing this.

PHP код:

 new query[120];
                    format(query,sizeof(query),"DELETE FROM `bans` WHERE `name` = '%s'",params);
                    mysql_query(query, [Your mysql databse name]); 


And yeah enter your db name after the query,