3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $params = array( 'foo' => 'bar', 'baz' => 'foobar', ); $params += array( 'foo' => 'baz', 'new' => 'barbaz', ); print_r($params);
Output for 4.3.0 - 7.2.0
Array ( [foo] => bar [baz] => foobar [new] => barbaz )