3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $first = 'z' + 1; echo $first . "\n"; $second = 'z'; $second++; echo $second . "\n"; ?>
Output for 7.1.0 - 7.2.0
Warning: A non-numeric value encountered in /in/DML8o on line 3 1 aa
Output for 4.3.0 - 7.0.20
1 aa