3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string ='öl??lö aßßhda äödasdas'; var_dump($without = preg_split('/\s+/', $string)); var_dump($with = preg_split('/\s+/u', $string)); var_dump($with == $without);

preferences:
31.75 ms | 402 KiB | 5 Q