3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = base_convert(256,10,2); $b = base_convert(~256,10,2); var_dump($a, $b);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(9) "100000000" string(9) "100000001"