3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php Var_dump(isNaN (null));
Output for 7.0.0 - 7.3.0rc4
Fatal error: Uncaught Error: Call to undefined function isNaN() in /in/lnaV1:2 Stack trace: #0 {main} thrown in /in/lnaV1 on line 2
Process exited with code 255.
Output for 5.3.20 - 5.6.28
Fatal error: Call to undefined function isNaN() in /in/lnaV1 on line 2
Process exited with code 255.