Euler 001 php Solution

Problem

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

Answer: 233168

Solution

euler001.php

<?php

function sum_natural_35($range)
{
  return array_sum(
    array_filter($range, function($number) {
      return ( 0 == $number % 3 ) || ( 0 == $number % 5 );
    })
  );
}

echo sum_natural_35(range(0, 1000));
?>

Euler 001 php Solution

Problem

Solution

See Also