3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(bin2hex(mb_convert_encoding('€', 'UTF-16', 'UTF-8')));
based on s0nVN
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
string(4) "20ac"