(PECL geoip >= 0.2.0)
geoip_country_code3_by_name — Get the three letter country code
The geoip_country_code3_by_name() function will return the three letter country code corresponding to a hostname or an IP address.
The hostname or IP address whose location is to be looked-up.
Returns the three letter country code on success, or FALSE if the address cannot be found in the database.
Example #1 A geoip_country_code3_by_name() example
This will print where the host example.com is located.
<?php
$country = geoip_country_code3_by_name('www.example.com');
if ($country) {
echo 'This host is located in: ' . $country;
}
?>
上例将输出：
This host is located in: USA