3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(&$a); $a === $a;
Output for 5.3.15 - 5.3.29, 5.4.5 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.22, 8.0.0 - 8.0.8
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.14, 5.4.0 - 5.4.4
Fatal error: Nesting level too deep - recursive dependency? in /in/Y6ZKh on line 4
Process exited with code 255.
Output for 4.3.1
Fatal error: Nesting level too deep - recursive dependency? in /in/Y6ZKh on line 4

preferences:
364.68 ms | 527 KiB | 12 Q