3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(is_nan((float)'NAN'));
based on stR0i
Output for 4.3.10 - 4.4.9, 5.0.3 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.13 - 7.1.0
bool(false)
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.2, 7.0.0 - 7.0.12
bool(true)