Text-Encoding with intl UConverter

Code
<?php

$uconv 
= new UConverter('latin-1''UTF-8');
echo 
$uconv->convert('äüöß');

echo 
PHP_EOL;

echo 
UConverter::transcode('äüöß''latin-1''UTF-8');



Result

Used Versions
PHP 7.1, Zend 3.0, Symfony 3.2, Laravel 5.2, PHPUnit 5.6, Doctrine 2.6