3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3); $b = array(3,4,5); $c = array_merge($a, $b); var_export($c);
Output for 4.3.0 - 7.1.0
array ( 0 => 1, 1 => 2, 2 => 3, 3 => 3, 4 => 4, 5 => 5, )