3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo "0x99" + 1; echo "\n0x99";
based on LtVp4
Output for 7.1.0 - 7.2.0
Notice: A non well formed numeric value encountered in /in/0GgTm on line 3 1 0x99
Output for 7.0.0 - 7.0.20
1 0x99
Output for 5.3.19 - 5.6.28
154 0x99