In this article we will describe how to get the IP address of a submitting client and displaying the country which it belongs to.

In order to achieve this functionality, just create a hidden field with the following code placed in the "Default Value" area.


//<code>
try {
// Let's cache results for better performance
$cache = JFactory::getCache();
$cache->setCaching(true);

// Grab the IP
$ip = JFactory::getApplication()->input->server->getString('REMOTE_ADDR');

// Call function through cache
return $cache->call('rsform_get_ip', $ip);
} catch (Exception $e) {

}

function rsform_get_ip($ip) {
// Get the HTTP transport
$http = JHttpFactory::getHttp();

// Create the URL for the API request
$url = 'freegeoip.net/json/'.urlencode($ip);

// Get response
$response = $http->get($url);

// Check if request is successful, a 200 code should be received.
if ($response->code == 200) {
// Decode response
if ($json = json_decode($response->body)) {
return $json->country_name;
}
}

return 'Unknown';
}
//</code>

Let's say, for example that you named your hidden field "location". To display the calculated value in the "Thank you" page or email just use this syntax: {location:value}.