3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a='d'; $b='a'; $c='b'; $d='a'; echo "$a $$a $$$a $$$a $$$$a $$$$$a";
Output for 4.3.0 - 7.1.0
d $d $$d $$d $$$d $$$$d