3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a[] = $a; var_dump($a, in_array($a, $a, true));
Output for 4.3.0 - 5.0.5, 5.2.6 - 7.1.0
array(1) { [0]=> array(0) { } } bool(false)
Output for 5.1.0 - 5.2.5
Fatal error: Nesting level too deep - recursive dependency? in /in/5Z5AR on line 5
Process exited with code 255.