3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $tst = 0; var_dump($tst, !!$tst, !!!$tst);
based on QR7Zh
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.6
int(0) bool(false) bool(true)