3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $i = 50; while ($i > 0): $power = 1; $bin = array(); if ($i / pow(2,$power) != 0) { $bin[$power - 1] = 1; $i = $i - pow(2,$power); } else $bin[$power - 1] = 0; $power++; endwhile; print $bin; ?>
Output for 5.4.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0RC5
Notice: Array to string conversion in /in/ncCJa on line 22 Array
Output for 4.3.0 - 5.3.29
Array