public static function ip()
{
if (isset($_SERVER['HTTP_CLIENT_IP'])) {
return strip_tags($_SERVER['HTTP_CLIENT_IP']);
}
if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
return strip_tags($_SERVER['HTTP_X_FORWARDED_FOR']);
}
if (isset($_SERVER['REMOTE_ADDR'])) {
return strip_tags($_SERVER['REMOTE_ADDR']);
}
return 'unknown';
}