3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "x"; $a += 1; echo($a);
Output for 7.1.0 - 7.2.0
Warning: A non-numeric value encountered in /in/AT3VY on line 3 1
Output for 4.3.0 - 7.0.20
1