public OnPlayerConnect(playerid)
{
    TogglePlayerClock(playerid, 1);
    new login[200];
    format(login,sizeof(login),"SELECT `IP` FROM `playerdata` WHERE `username` = '%s' LIMIT 1",PlayerName(playerid));
    mysql_query(login);
    mysql_store_result();
    new rows = mysql_num_rows();
    if(!rows)
    {
        new rstring[256];
        format(rstring,256,""RED"You are not register "WHITE"%s "RED"please enter your password",PlayerName(playerid));
        ShowPlayerDialog(playerid,DIALOG_REGISTER,DIALOG_STYLE_PASSWORD,"Register",rstring,"Continue","Exit");
    }
    if(rows == 1)
    {
        new IP[2][16];
        mysql_fetch_field_row(IP[0],"IP");
        GetPlayerIp(playerid,IP[1], 16);
        if(strlen(IP[0]) != 0 && !strcmp(IP[0], IP[1], true))
        {
            load_player_data(playerid);
        }
        else if(!strlen(IP[0]) || strcmp(IP[0], IP[1], true))
        {
            new rstring[256];
            format(rstring,256,""WHITE"Welcome "GREEN"%s"WHITE" please type in password",PlayerName(playerid));
            ShowPlayerDialog(playerid,DIALOG_LOGIN,DIALOG_STYLE_PASSWORD,"Login",rstring,"Continue","Exit");
            Class[playerid] = 0;
        }
    }
    //mysql_free_result();
    return true;
}
/