3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $input = Array( Array ( 0 => 1, 1 => 2, 2 => 3, 3 => 4 ), Array ( 0 => 2, 1 => "aaa" ) ); $result = call_user_func_array("array_merge", $input); var_export($result);
Output for 4.3.0 - 7.1.0
array ( 0 => 1, 1 => 2, 2 => 3, 3 => 4, 4 => 2, 5 => 'aaa', )