3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a=array(); $a[0] = $a; var_dump($a === $a);
Output for 4.3.0 - 5.0.5, 5.2.6 - 7.1.0
bool(true)
Output for 5.1.0 - 5.2.5
Fatal error: Nesting level too deep - recursive dependency? in /in/eF1Vc on line 5
Process exited with code 255.