3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "hello"; $b = "hi"; $val = "howdy"; $val = "a"; echo ${'val'};
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
a