3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a =bin2hex("44bf6"); var_dump(a);
based on 2GIsv
Output for 7.2.0
Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/ZPYbo on line 3 string(1) "a"
Output for 5.3.19 - 7.1.10
Notice: Use of undefined constant a - assumed 'a' in /in/ZPYbo on line 3 string(1) "a"