3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $name = "this"; $$name = "text"; echo $$name;
Output for 7.1.0 - 7.3.0rc4
Fatal error: Uncaught Error: Cannot re-assign $this in /in/PkbqQ:3 Stack trace: #0 {main} thrown in /in/PkbqQ on line 3
Process exited with code 255.
Output for 4.3.0 - 7.0.20
text