[JaTochNietDan]

Just compare it directly.

pawn Код:

stock OnPlayerAutoLogin(playerid)
{
    format(File, sizeof(File), "/accountfiles/%s.sav", PlayerName[playerid]);
    AutoLogin = dini_Int(File, "AutoLogin");
    if(AutoLogin)
    {
        if(!strcmp(AccountInfo[playerid][aIP], dini_Get(File, "IP"))) return 1;
    }
    return 0;
}

Also in your OnPlayerConnect function, what's the point in doing that? Why not just save it directly to the variable in the first place? Like so:

pawn Код:

public OnPlayerConnect(playerid)
{
    GetPlayerIp(playerid, AccountInfo[playerid][aIP], sizeof(AccountInfo[playerid][aIP]));

    return 1;
}

Lastly, moved to the right section.