3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $x = "a9z"; echo $x + 1; echo ++$x;
Output for 7.1.0 - 7.2.0
Warning: A non-numeric value encountered in /in/RoDq3 on line 3 1b0a
Output for 4.3.0 - 7.0.20
1b0a