3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php base64_decode(strrev(unpack("3d3d516343746d4d6d6c315669563362")));
Output for 7.1.0 - 7.2.6
Warning: unpack() expects at least 2 parameters, 1 given in /in/0BA8j on line 2
Output for 5.3.0 - 7.0.20
Warning: unpack() expects exactly 2 parameters, 1 given in /in/0BA8j on line 2
Output for 4.3.0 - 5.2.17
Warning: Wrong parameter count for unpack() in /in/0BA8j on line 2