Try this from, https://php.net/manual/en/function.number-format.php#89888:
<?php
function nice_number($n) {
// first strip any formatting;
$n = (0+str_replace(",", "", $n));
// is this a number?
if (!is_numeric($n)) return false;
// now filter it;
if ($n > 1000000000000) return round(($n/1000000000000), 2).' trillion';
elseif ($n > 1000000000) return round(($n/1000000000), 2).' billion';
elseif ($n > 1000000) return round(($n/1000000), 2).' million';
elseif ($n > 1000) return round(($n/1000), 2).' thousand';
return number_format($n);
}
echo nice_number('14120000'); //14.12 million
?>
