3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "4d9"; $a++; echo $a; $a++; echo ' '+$a;
Output for 7.1.0
4e0 Warning: A non-numeric value encountered in /in/6bMjt on line 7 5
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.14
4e05