How to find the sum of all the multiples of 3 or 5 below 1000 through PHP

Solution: To find the multiple of 3 or 5 simply write and run the following code let variables be  $sum = 0, $n <?php $sum = 0; for ($n = 0; $n < 1000; $n++)  {  if (!($n % 5) || !($n % 3))     {      $sum += $n;    }  } echo $sum; ?>