3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = ""; $bar = "0"; $baz = "\0"; var_dump(isset($foo)); var_dump(isset($bar)); var_dump(isset($baz));
Output for 4.3.0 - 7.1.0
bool(true) bool(true) bool(true)