[PHP] WHMCS GEOLOCATION HOOK

<?php

/**
 * GEOLOCATION HOOK FOR WHMCS
 * This hook will automatically setup currency and language
 * for nonlogged users in your clientarea.
 *
 *
 * For more information, read the whole article here:
 * http://blog.whmcs.com
 *
 *
 * @author  ModulesGarden
 * @link    http://www.modulesgarden.com
 */

$country_to_currency = array(
    'default' => 'ARS',
    'US'      => 'USD',
    'UK'      => 'EUR',
    'PL'      => 'EUR',
    'DE'      => 'EUR',
    'NL'      => 'EUR',
    'FR'      => 'EUR',
    'IT'      => 'EUR',
    'CH'      => 'EUR',
    // NOTE: You can add more below
);

$country_to_language = array(
    'default' => 'spanish',
    'US'      => 'english',
    'UK'      => 'english',
    'DE'      => 'english',
    'FR'      => 'english',
    'IT'      => 'english',
    // NOTE: You can add more below
);

$language_to_template = array(
    'english' => 'nhp2012theme',
    'german'  => 'nhp2012theme',
    'french'  => 'nhp2012theme',
    'italian' => 'nhp2012theme',
    // NOTE: You can add more below
);


$allowed_scripts = array(
    'index.php',
    'clientarea.php',
    'cart.php',
    'knowledgebase.php',
    'announcements.php',
    'serverstatus.php',
    'affiliates.php',
    'contact.php'
);


/**
* FUNCTION geolocation_getCurrencyId
* This function will return currency id for specific code.
*
* @param  string
* @return int
*/
function geolocation_getCurrencyId($currency) {
    $q = mysql_query('SELECT id FROM tblcurrencies WHERE code = "'.mysql_escape_string($currency).'"'); // escape string just in case
    $r = mysql_fetch_assoc($q);
    mysql_free_result($q);

    if(isset($r['id'])) {
        return $r['id'];
    }
}

$script_path        = substr($_SERVER['SCRIPT_NAME'], strrpos($_SERVER['SCRIPT_NAME'], DIRECTORY_SEPARATOR)+1);
$current_template   = $CONFIG['Template'];
$language           = $_SESSION['Language'];

/**
 * Main Geolocation Script
 *
 * NOT run script
 * - if we are in adminarea
 * - if already setup for this session
 * - if user is logged in
 * - NEW: allowing to run the hook only for specific scripts (defined above)
 */
if(in_array($script_path, $allowed_scripts) && strpos($_SERVER['REQUEST_URI'], $customadminpath) === false && !isset($_SESSION['geolocation_setup']) && $_SESSION['uid'] == false) {
    $_SESSION['geolocation_setup'] = true; // prevent from redirecting back again in this session


    /**
     * Get Country using external service - Hostip.info example
     * NOTE: You can handle this part with any other method.
     *
    $current_country = '';
    $ret = file_get_contents("http://api.hostip.info/get_json.php?ip=".$_SERVER['REMOTE_ADDR']); // this can be called also via cURL
    $parsed_json = @json_decode($ret,true);
    if(isset($parsed_json['country_code'])) {
        $current_country = $parsed_json['country_code'];
    }
     *
     */

    /**
     * NEW: Get Country using external service - Maxmind GeoLite Example
     * http://dev.maxmind.com/geoip/geolite
     * NOTE: You can handle this part with any other method.
     */
    include "geoip.inc";
    $gi = geoip_open(dirname(__FILE__).DIRECTORY_SEPARATOR."GeoIP.dat", GEOIP_STANDARD);
    $current_country = geoip_country_code_by_addr($gi, $_SERVER['REMOTE_ADDR']);
    geoip_close($gi);

    /**
     * Get language, currency and currency ID in order to setup the right values in the system
     */
    $currency = $current_country != '' && isset($country_to_currency[$current_country])
                ? $country_to_currency[$current_country]
                : $country_to_currency['default'];

    $currency_id = geolocation_getCurrencyId($currency);

    $language = $current_country != '' && isset($country_to_language[$current_country])
                ? $country_to_language[$current_country]
                : $country_to_language['default'];



    /**
     * Setup Currency Session
     * NOTE: You can remove/disable this part if not needed.
     */
    if($currency_id && (!isset($_SESSION['currency']) || $_SESSION['currency'] != $currency))
    {
        $_SESSION['currency'] = $_SESSION['switched_currency'] = $currency_id;
    }
    /**
     * Setup URL Redirection to Switch Language
     * NOTE: You can remove/disable this part if not needed.
     */
    if(!isset($_SESSION['Language']) || $_SESSION['Language'] != $language) {
        $location = '?language='.$language;
        if($_SERVER['QUERY_STRING'] != '')
            $location .= '&'.$_SERVER['QUERY_STRING'];

        ob_clean();
        header('location: '.$location);
        die();
    }

}

?>