3v4l.org

run code in 300+ PHP versions simultaneously
<?php $this = 'text'; // error echo $this;
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.20
Fatal error: Cannot re-assign $this in /in/2aF8t on line 3
Process exited with code 255.
preferences:
180.09 ms | 1395 KiB | 56 Q