Sqr Root Finding took: " . ($stop - $start) . " seconds";
function sqroot($num)
{
  $number = 400;  
  if($num == 0) {
    return 0;
  }
  $n = $num / 2 +1;
  $n1 = ($n + ($num / $n)) / 2;
  while($n1 < $n) {
    $n = $n1;
    $n1 = ($n + ($num / $n)) / 2;
  }
  return $n;
}
?>