3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo "a" + "b";
Output for 7.1.0 - 7.2.0
Warning: A non-numeric value encountered in /in/7CDPe on line 3 Warning: A non-numeric value encountered in /in/7CDPe on line 3 0
Output for 5.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.0.20
0