3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $input = Array( Array ( 0 => "http://www.asdfasfasasfdasfd.com" ), Array ( 0 => "http://www.asasdf.com" ) ); $result = call_user_func_array("array_merge", $input); var_export($result);
Output for 4.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array ( 0 => 'http://www.asdfasfasasfdasfd.com', 1 => 'http://www.asasdf.com', )