<?php
function sum(...$nums) {
$val = 0;
foreach ($nums as $n) {
$val += $n;
}
return $val;
}
echo sum(1, 2, 3, 4);
PD9waHAKZnVuY3Rpb24gc3VtKC4uLiRudW1zKSB7CiAgICAkdmFsID0gMDsKICAgIGZvcmVhY2ggKCRudW1zIGFzICRuKSB7CiAgICAgICAgJHZhbCArPSAkbjsKICAgIH0KICAgIHJldHVybiAkdmFsOwp9CgplY2hvIHN1bSgxLCAyLCAzLCA0KTs=