3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arrayOb = new \ArrayObject(range(1, 20)); var_dump(array_key_exists(4, $arrayOb));
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/cm8jZ on line 3 bool(true)
Output for 4.3.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/cm8jZ on line 3 Fatal error: Cannot instantiate non-existent class: arrayobject in /in/cm8jZ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/cm8jZ on line 3 Fatal error: Cannot instantiate non-existent class: arrayobject in /in/cm8jZ on line 3