3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php switch(true) { case is_null(null): echo "OK!"; break; case is_integer(2): echo "OK!"; break; case is_null(2): echo "not OK!"; }
based on gdpru
Output for 4.3.0 - 7.2.0
OK!