3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "a"; echo $b = "$a"+1;
Output for 7.1.0 - 7.2.11
Warning: A non-numeric value encountered in /in/S7tEN on line 3 1
Output for 4.3.0 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.0.31
1