3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo serialize(array('8589934592'=>1));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
a:1:{i:8589934592;i:1;}