3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = new ArrayObject; var_dump(isset($array['doesNotExist']['false']));
Output for 5.3.18 - 5.3.29, 5.4.8 - 5.6.28, 7.0.0 - 7.1.0
bool(false)
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined index: doesNotExist in /in/QY1l0 on line 5 bool(false)
Output for 5.0.0 - 5.3.17, 5.4.0 - 5.4.7
Notice: Undefined index: doesNotExist in /in/QY1l0 on line 5 bool(false)
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/QY1l0 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/QY1l0 on line 3