<?php
// PHP Code to compute sum
// of digits in number.
// Function to get
// $sum of digits
function getsum($n)
{
$sum = 0;
while ($n != 0)
{
$sum = $sum + $n % 10;
$n = $n/10;
}
return $sum;
}
// Driver Code
$n = 687;
$res = getsum($n);
echo("$res");
?>