3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $key = array('this is invalid'); $test['Array'] = true; var_dump($test[$key]);
Output for 4.3.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: Illegal offset type in /in/vOvtd on line 5 NULL
Output for hhvm-3.10.0 - 3.12.0
Warning: Invalid operand type was used: Invalid type used as key in /in/vOvtd on line 5 Notice: Array to string conversion in /in/vOvtd on line 5 Notice: Undefined index: Array in /in/vOvtd on line 5 NULL