3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo 'derp' - 1;
Output for 7.1.0 - 7.2.0
Warning: A non-numeric value encountered in /in/igQU4 on line 3 -1
Output for 5.3.0 - 5.6.30, hhvm-3.10.1 - 3.11.1, hhvm-3.13.2, hhvm-3.17.3, 7.0.0 - 7.0.20
-1
Output for hhvm-3.12.14, hhvm-3.15.4

Process exited with code 137.