3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $one = "hallo"; $two = "goodbye"; echo count("$one$two");
Output for 7.2.0 - 7.2.6
Warning: count(): Parameter must be an array or an object that implements Countable in /in/jhtPD on line 4 1
Output for 4.3.0 - 7.1.20
1