3v4l.org

run code in 300+ PHP versions simultaneously
<?php function x($this) {} class Foo { function y($this) {} }
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.34
Fatal error: Cannot re-assign $this in /in/g6cOA on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
preferences:
213.03 ms | 1396 KiB | 124 Q