/**
* Returns the best possible IP of the current user, in the format A.B.C.D
*
* @return string ip
*/
public static function getIpString()
{
if (isset($_SERVER['HTTP_CLIENT_IP']) && ($ip = Piwik_Common::getFirstIpFromList($_SERVER['HTTP_CLIENT_IP'])) && strpos($ip, "unknown") === false) {
return $ip;
} elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && ($ip = Piwik_Common::getFirstIpFromList($_SERVER['HTTP_X_FORWARDED_FOR']) && isset($ip) && !empty($ip) && strpos($ip, "unknown") === false)) {
return $ip;
} elseif (isset($_SERVER['HTTP_CLIENT_IP']) && strlen(Piwik_Common::getFirstIpFromList($_SERVER['HTTP_CLIENT_IP'])) != 0) {
return Piwik_Common::getFirstIpFromList($_SERVER['HTTP_CLIENT_IP']);
} else {
if (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && strlen($ip = Piwik_Common::getFirstIpFromList($_SERVER['HTTP_X_FORWARDED_FOR'])) != 0) {
return $ip;
} elseif (isset($_SERVER['REMOTE_ADDR'])) {
return Piwik_Common::getFirstIpFromList($_SERVER['REMOTE_ADDR']);
} else {
return '0.0.0.0';
}
}
}
