3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str2 = "301854aac00444dedfc6bdee"; echo mb_detect_encoding($str2);
based on 0X2SH
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
ASCII