Ip to country

[Ranma2]

Come posso realizzare una cosa del genere?

http://www.iptocountry.info/

inserisco l'ip e mi da la sigla dello stato

[SuperSavio]

function GetCountry($ip) {

    // open ip-to-country file, set correct address...
    if ( $file = fopen("ip-to-country.csv","r") ) {

        // if successfully opened, read each line of the file
        while ( $line = fgetcsv($file,1024,",") ) {

            // if our the ip corresponds, return the country name
            // $line[2] = country code 2 char,
            // $line[3] = country code 3 char, if needed...
            if ( ip2long($ip) > $line[0] && ip2long($ip) < $line[1] ) {
                return $line[4];
            }
        }
    }

    // if this ip has something wrong :?
    return false;
}

$country = GetCountry($_SERVER['REMOTE_ADDR']);
echo "Your country is ".$country; 

poi scaricati questo file
http://ip-to-country.webhosting.info...ountry.csv.zip