- var_dump: documentation ( source)
- array_sum: documentation ( source)
- array_unique: documentation ( source)
<?php
function x($n) {
for($i = 1; $i <= $n; $i++) {
if ($n % $i == 0 && $i != $n) {
$factors[] = $i;
echo "$i is a factor of $n." . PHP_EOL;
}
elseif ($i == $n) {
echo "Removing $n from array..";
}
}
var_dump($factors);
$a = array_unique($factors);
var_dump($a);
echo "Removing duplicate factors.";
return ($n == array_sum($a) / 2) ? true : false;
}
x(42);
?>