3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $int=0 ; var_dump( log(($int^pow(2,ceil(log($int, 2)))-1)+1,2));
Output for 4.3.4 - 7.2.0
float(-INF)
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(-0.E+79)