3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $c=array(1=>'1'); echo serialize(c);
based on nvQo0
Output for 7.2.0
Warning: Use of undefined constant c - assumed 'c' (this will throw an Error in a future version of PHP) in /in/IY4uV on line 3 s:1:"c";
Output for 5.3.19 - 7.1.10
Notice: Use of undefined constant c - assumed 'c' in /in/IY4uV on line 3 s:1:"c";