3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $c = (string)"0xFF" + (string)"1"; echo $c;
Output for 7.1.0 - 7.2.6
Notice: A non well formed numeric value encountered in /in/JZB2G on line 2 1
Output for 7.0.0 - 7.0.20
1
Output for 4.3.0 - 5.6.28
256