3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 12.5; $b = -3.2; echo $a+b;
Output for 7.2.0 - 7.3.0rc4
Warning: Use of undefined constant b - assumed 'b' (this will throw an Error in a future version of PHP) in /in/LueZU on line 5 Warning: A non-numeric value encountered in /in/LueZU on line 5 12.5
Output for 7.1.0 - 7.1.20
Notice: Use of undefined constant b - assumed 'b' in /in/LueZU on line 5 Warning: A non-numeric value encountered in /in/LueZU on line 5 12.5
Output for 4.3.0 - 7.0.20
Notice: Use of undefined constant b - assumed 'b' in /in/LueZU on line 5 12.5