3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $name = 'this'; array($a = & $$name);
Output for 7.1.0 - 7.2.6
Fatal error: Uncaught Error: Cannot re-assign $this in /in/IdNdh:3 Stack trace: #0 {main} thrown in /in/IdNdh on line 3
Process exited with code 255.
Output for 4.3.0 - 7.0.20