3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $extra = array('adgroup', 'campaign', 'content', 'source', 'term', 'mobile', 'tablet'); print_r(array_merge($extra, $extra));
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => adgroup [1] => campaign [2] => content [3] => source [4] => term [5] => mobile [6] => tablet [7] => adgroup [8] => campaign [9] => content [10] => source [11] => term [12] => mobile [13] => tablet )
Output for hhvm-3.10.0

Process exited with code 153.