3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo ($x = '2d9'); $x++; echo ($x); // interprets '2d9' as hex, now $x == '2e0' $x++; echo ($x); // interprets '2e0' as a float, now $x == 3
based on ov6e6
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.8
2d92e03