3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class A { } $a = new A(); echo sizeof($a);
Output for 7.2.0
Warning: sizeof(): Parameter must be an array or an object that implements Countable in /in/QKVUk on line 9 1
Output for 4.3.0 - 7.1.7
1