= 1000000000) { return number_format($num / 1000000000, 1) . 'B'; } elseif ($num >= 1000000) { return number_format($num / 1000000, 1) . 'M'; } elseif ($num >= 1000) { return number_format($num / 1000, 1) . 'K'; } else { return $num; } } ?>