3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(!NAN);
Output for 4.3.6 - 7.1.7
bool(false)
Output for 4.3.0 - 4.3.5
Notice: Use of undefined constant NAN - assumed 'NAN' in /in/ArEbp on line 2 bool(false)