3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_export(is_num('3 fish'));
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function is_num() in /in/SucTR:3 Stack trace: #0 {main} thrown in /in/SucTR on line 3
Process exited with code 255.
Output for 5.3.29 - 5.6.28
Fatal error: Call to undefined function is_num() in /in/SucTR on line 3
Process exited with code 255.
Output for 4.3.0
Fatal error: Call to undefined function: is_num() in /in/SucTR on line 3