3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(18446744073709551615);
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.2.0
float(1.844674407371E+19)