<!DOCTYPE html>
<html>
<body>
<?php
$num = 8654;
$userValue = $num;
function myCondense($a){
$copyNum = $a;
$remainder = 0;
$result = 0;
while($copyNum != 0)
{
$remainder = $copyNum % 10;
$result += $remainder;
$copyNum = floor($copyNum / 10);
}
return $result;
}
while($num > 9)
$num = myCondense($num);
echo "Single Digit of $userValue: $num";
?>
</body>
</html>