# PHP program to find the sum of cubes of the first n natural numbers

PHPServer Side ProgrammingProgramming

To find the sum of cubes of the first n natural numbers, the code is as follows −

## Example

Live Demo

<?php
function sum_of_cubes($val) {$init_sum = 0;
for ($x = 1;$x <= $val;$x++)
$init_sum +=$x * $x *$x;
return \$init_sum;
}
print_r("The sum of cubes of first 8 natural numbers is ");
echo sum_of_cubes(8);
?>

## Output

The sum of cubes of first 8 natural numbers is 1296

A function named ‘sum_of_cubes’ is defined that initializes a sum to 0. Every natural number is multiplied by itself thrice (cube) and added to the initial sum. The limit is the value that is passed as a parameter to the function. The limit is defined outside the function and the function is called. Relevant output is displayed on the console.

Published on 02-Jul-2020 10:35:45