3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $r = "hello" + "world"; var_dump($r);
Output for 7.1.0
Warning: A non-numeric value encountered in /in/jl0eq on line 3 Warning: A non-numeric value encountered in /in/jl0eq on line 3 int(0)
Output for 4.3.0 - 7.0.14
int(0)