3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "4d9"; $a++; echo $a; $a++; echo ' '+$a;
Output for 7.1.0 - 7.2.6
4e0 Warning: A non-numeric value encountered in /in/6bMjt on line 7 5
Output for 4.3.0 - 7.0.20
4e05