3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php array_merge('asdf', array('foo', 'bar'));
Output for 5.0.0 - 7.2.0
Warning: array_merge(): Argument #1 is not an array in /in/3S0sK on line 1
Output for 4.3.0 - 4.4.9