3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $w = 'Stackoverflow'; foreach($w as $k => $v) { echo dechex($k), ' ', $v, PHP_EOL; }
Output for 4.3.0 - 4.3.10, 4.4.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: Invalid argument supplied for foreach() in /in/7t4MS on line 4
Output for hhvm-3.10.0 - 3.12.0
Warning: Invalid argument supplied for foreach() in /in/7t4MS on line 7
Output for 4.3.11