- var_dump: documentation ( source)
<?php
function foo($bar, $baz) { return [$bar, $baz]; }
function userland_call_user_func_array(callable $function, array $args) { return $function(...$args); }
var_dump(userland_call_user_func_array('foo', ['bar', 'baz']));
var_dump(call_user_func_array('foo', ['bar', 'baz']));