3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo strpos(log(($int^pow(2,ceil(log($int, 2)))-1)+1,2),'.');
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: int in /in/1IE3i on line 2 Notice: Undefined variable: int in /in/1IE3i on line 2
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: int in /in/1IE3i on line 2 Notice: Undefined variable: int in /in/1IE3i on line 2