3v4l.org

run code in 300+ PHP versions simultaneously
<?php $this = 3; $a = ''; strtolower(&$a);
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.19
Fatal error: Cannot re-assign $this in /in/ciPcL on line 2
Process exited with code 255.
preferences:
173.15 ms | 1395 KiB | 55 Q