Find Sum of 5th Powers of First N Natural Numbers in PHP

To find the sum of the 5th powers of first n natural numbers, the code is as follows −

Example

 Live Demo

<?php
function sum_of_fifth_pow($val)
{
   $init_sum = 0;
   for ($i = 1; $i <= $val; $i++)
      $init_sum = $init_sum + ($i * $i * $i * $i * $i);
   return $init_sum;
}
$val = 89;
print_r("The sum of fifth powers of the first n natural numbers is ");
echo(sum_of_fifth_pow($val));
?>

Output

The sum of fifth powers of the first n natural numbers is 85648386825

A function named ‘sum_of_fifth_pow’ is defined, and an initial sum value is defined as 0. The fifth power of every natural number up to a certain range is computed and added to the initial sum value. Outside the function, a value is defined and the function is called by passing this value as parameter. Relevant message is displayed on the console.