3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'test'; $test = array('test' => 'hello', 0 => 'zero', 1 => 'one'); echo $$a[0];
Output for 7.0.0 - 7.1.0
zero
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: t in /in/N4kLk on line 6
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: t in /in/N4kLk on line 6