3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo serialize(array(1, -1, 0));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
a:3:{i:0;i:1;i:1;i:-1;i:2;i:0;}