3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $x="hi "; $y="guy"; $z=$x+$y; echo $z; ?>
Output for 7.1.0 - 7.3.0rc4
Warning: A non-numeric value encountered in /in/N4MsQ on line 4 Warning: A non-numeric value encountered in /in/N4MsQ on line 4 0
Output for 4.3.0 - 7.0.20
0