3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = array('a' => 1, 'b' => 2); $bar = array('c' => 3, 'd' => 4); array_merge($foo, $bar); var_dump($foo);
based on 1RaQh
Output for 4.3.0 - 7.1.0
array(2) { ["a"]=> int(1) ["b"]=> int(2) }