3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $r = array(); $r[] = 'a'; echo "" . $r;
Output for 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/QT9Ns on line 7 Array
Output for 4.3.0 - 5.3.29
Array