3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo NaN; // ahoj
Output for 7.2.0 - 7.3.0rc4
Warning: Use of undefined constant NaN - assumed 'NaN' (this will throw an Error in a future version of PHP) in /in/av51n on line 3 NaN
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.1.20
Notice: Use of undefined constant NaN - assumed 'NaN' in /in/av51n on line 3 NaN
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/av51n on line 6
Process exited with code 255.