3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function hello() { echo 'Hello, magic PHP!'; } function getCallback() { return 'hello'; } $result = ${'_'.!$_=getCallback()}();
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Hello, magic PHP!