3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(md5(null));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0, 7.0.0 - 7.1.0
string(32) "d41d8cd98f00b204e9800998ecf8427e"
Output for hhvm-3.12.0
Warning: md5() expects parameter 1 to be string, null given in /in/4eOMD on line 3 NULL