3v4l.org

run code in 300+ PHP versions simultaneously
<?php $this = false; $that = true; if ($this OR $that) echo 'derp';
Output for 5.3.0 - 5.3.22, 5.4.0 - 5.4.12
Fatal error: Cannot re-assign $this in EpQOV on line 2
Process exited with code 255.
preferences:
170.73 ms | 1395 KiB | 43 Q