PHP

How to find given number is armstrong or not -PHP

By CodereplicaJune 8, 2020Updated:February 17, 2023No Comments1 Min Read

An armstrong number is a number that is equal to the sum of cubes of its digits.
For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers.

Let’s see the approach ,how to find given number is armstrong or not ?

<?php
    $num = 407; // user input
    $sum =0;
    $temp = $num;
    while($temp !=0)
    {
        $rem = $temp % 10;
        $sum = $sum+$rem*$rem*$rem;
        $temp = $temp/10;
    }
    if($num == $sum)
    {
        echo $num." is armstrong";
    }
    else{
        echo $num." is not a armstrong";
    }