3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = "bar"; var_dump(isset($foo['hello there']));
Output for 5.0.0 - 5.0.2, 5.4.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for 4.3.0 - 4.4.9, 5.0.3 - 5.3.29
bool(true)