3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print unserialize('a:4:{i:0;s:4:"view";i:1;s:4:"book";i:2;s:4:"book";i:3;i:2;}');
Output for 5.4.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
Notice: Array to string conversion in /in/Im3br on line 1 Array
Output for 4.3.0 - 5.3.29
Array