<?php
if(isset($_POST['submit']))
{
$number = $_POST['num']; // get the number entered by user
$temp = $number;
$sum = 0;
while($temp != 0 )
{
$remainder = $temp % 10; //find reminder
$sum = $sum + ( $remainder * $remainder * $remainder );
$temp = $temp / 10;
}
if( $number == $sum )
{
echo "$number is an Armstrong Number";
}else
{
echo "$number is not an Armstrong Number";
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Whether a number Armstrong or not</title>
</head>
<body>
<form name="armstrong" action="" method="post">
Number :<input type="text" name="num" value="" required=""><br>
<input type="submit" value="Submit" name="submit">
</form>
</body>
</html>