3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = 'some string'; var_dump(isset($string['foo']));
Output for 5.0.0 - 5.0.2, 5.4.0 - 7.2.0
bool(false)
Output for 4.3.0 - 4.4.9, 5.0.3 - 5.3.29
bool(true)