3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo ($x = '2d9'); echo ($x++); // interprets '2d9' as hex, now $x == '2e0' echo ($x++); // interprets '2e0' as a float, now $x == 3
based on uuGeZ
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
2d92d92e0