3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ach = array(); echo $ach[];
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Fatal error: Cannot use [] for reading in /in/EuU9v on line 3
Process exited with code 255.
preferences:
193.89 ms | 1395 KiB | 66 Q