3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array("foo", "bar", "baz"); $b = '$a[0]'; print $$b;
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: $a[0] in /in/EiaQN on line 7
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: $a[0] in /in/EiaQN on line 7