Armstrong Php Coding

 //armstrong
<?php
$sum = 0;

   $number=371;

   $temp = $number;

   while( $temp != 0 )
   {
      $remainder = $temp%10;
      $sum = $sum + $remainder*$remainder*$remainder;
      $temp = $temp/10;
   }

   if ( $number == $sum )
      echo "Entered number is an armstrong number.<br>";
   else
      echo "Entered number is not an armstrong number.<br>";


  echo $number ."==". $sum ;
?>