wp-wpml-geoip-browser-language-redirect-master/WPML_GeoIP_IP

<?php
/**
 * Class for handling the GeoIP conversion
 */

class WPML_GeoIP_IPResolver
{
    var $db;
    var $language_mappings;
    var $default_language;

    /**
     * Load dependencies, etc
     */
    function __construct()
    {
        /**
         * MaxMind Country codes
         *
         * AP, EU, AD, AE, AF, AG, AI, AL, AM, CW, AO, AQ, AR, AS, AT, AU, AW, AZ, BA, BB, BD, BE, BF, BG,
         * BH, BI, BJ, BM, BN, BO, BR, BS, BT, BV, BW, BY, BZ, CA, CC, CD, CF, CG, CH, CI, CK, CL, CM, CN,
         * CO, CR, CU, CV, CX, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, EH, ER, ES, ET, FI, FJ, FK, FM,
         * FO, FR, SX, GA, GB, GD, GE, GF, GH, GI, GL, GM, GN, GP, GQ, GR, GS, GT, GU, GW, GY, HK, HM, HN,
         * HR, HT, HU, ID, IE, IL, IN, IO, IQ, IR, IS, IT, JM, JO, JP, KE, KG, KH, KI, KM, KN, KP, KR, KW,
         * KY, KZ, LA, LB, LC, LI, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, MG, MH, MK, ML, MM, MN, MO, MP,
         * MQ, MR, MS, MT, MU, MV, MW, MX, MY, MZ, NA, NC, NE, NF, NG, NI, NL, NO, NP, NR, NU, NZ, OM, PA,
         * PE, PF, PG, PH, PK, PL, PM, PN, PR, PS, PT, PW, PY, QA, RE, RO, RU, RW, SA, SB, SC, SD, SE, SG,
         * SH, SI, SJ, SK, SL, SM, SN, SO, SR, ST, SV, SY, SZ, TC, TD, TF, TG, TH, TJ, TK, TM, TN, TO, TL,
         * TR, TT, TV, TW, TZ, UA, UG, UM, US, UY, UZ, VA, VC, VE, VG, VI, VN, VU, WF, WS, YE, YT, RS, ZA,
         * ZM, ME, ZW, A1, A2, O1, AX, GG, IM, JE, BL, MF, BQ, SS, O1
         */

        //Array with structure MaxMind Code => WPML Code
        $this->language_mappings = array(
            'SE' => 'sv', //Sweden
            'NO' => 'nb', //Norway
            'FI' => 'fi', //Finland
            'DK' => 'da', //Denmark
            'US' => 'en', //USA
            'CA' => 'en', //Canada
            'DE' => 'de', //Germany
            'GR' => 'el'  //Greece
        );

        //Set the default WPML language which is used if no matching language is found
        $this->default_language = 'en';

        include('lib/geoip-api-php/geoip.inc');
        include('lib/geoip-api-php/geoipregionvars.php');
        include('lib/geoip-api-php/timezone/timezone.php');

        //MaxMind gets cranky when we don't use the full path
        $this->db = geoip_open(plugin_dir_path(__FILE__) . '/database/GeoIP.dat', GEOIP_STANDARD);
    }
    /**
     * Returns a WPML-compatible country code from an IP address
     *
     * @param $ip
     * @param bool $as_json
     * @return string
     */
    function ip_to_wpml_country_code($ip, $as_json = true)
    {
        //This returns empty string if something went wrong
        $country_code = @geoip_country_code_by_addr($this->db, $ip);

        //Try to match against language mappings
        foreach($this->language_mappings as $maxmind_code => $wpml_code)
        {
            if($maxmind_code == $country_code)
                return $this->return_country_code($wpml_code);
        }

        //We didn't match anything, return the default code
        return $this->return_country_code($this->default_language);
    }

    function return_country_code($country_code)
    {
        return json_encode(array('country_code' => $country_code));
    }

    function set_json_header()
    {
        //http://stackoverflow.com/a/11112311/2572827
        header('Content-Type: application/json');
    }
}