3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "0 "; $a = (++$a) + ($a++); print $a;
based on bEDPn
Output for 7.1.0 - 7.2.0
Notice: A non well formed numeric value encountered in /in/oUSlK on line 4 Notice: A non well formed numeric value encountered in /in/oUSlK on line 4 0
Output for 4.3.0 - 7.0.20
0