3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = serialize(null); var_dump(unserialize($x)); // Did I succeed?
based on R6RvN
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
NULL
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/24IKm on line 4
Process exited with code 255.