<?php
function sum() {
$list = array();
$prepare = function($value) use(&$prepare, &$list) {
if (is_array($value)) {
return $prepare(array_merge($list, $value));//array_map($prepare, );
}
$list[] = $value;
};
$args = func_get_args();
array_walk($args, $prepare, $list);
var_dump($list);
return addition(0, $list);
}
function addition($sum, array &$list) {
return empty($list) ? $sum : addition($sum + array_pop($list), $list);
}
$vars = range(1, 10);
echo sum(array($vars), array(1));
preferences:
35.42 ms | 402 KiB | 5 Q