3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $name = 'this'; $$name = 'text'; // sets $this to 'text' echo $$name;
Output for 7.1.0
Fatal error: Uncaught Error: Cannot re-assign $this in /in/lanRC:3 Stack trace: #0 {main} thrown in /in/lanRC on line 3
Process exited with code 255.
Output for 4.3.0 - 7.0.14
text