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++; print $bin[$power - 1]; endwhile; ?>
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20
Output for hhvm-3.12.0
Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20 Notice: Undefined index: 1 in /in/mLBUR on line 20
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20 Notice: Undefined offset: 1 in /in/mLBUR on line 20