<?php

$num=153;
$sum=0;
$temp=$num;
while($temp!=0)
{
$rem=$temp%10;
$sum=$sum+$rem*$rem*$rem;
$temp=$temp/10;
}
if($num==$sum)
{
echo "Armstrong number";
}
else
{
echo "not an armstrong number";
}

?>

/*
Output
	
Armstrong number