note 32708 modified in function.sprintf by jmcastagnetto

[Editor's note: Usually it will be simpler to use number_format() to generate the type of output the code below produces. The built-in function would be faster than using a regular expression.] here is a simple function to add commas to a number. function comma_format($num){ $number = sprintf("%01.2f", $num); while (preg_match("!(-?\d+)(\d\d\d)!", $number)) { $number = preg_replace("!(-?\d+)(\d\d\d)!","$1,$2", $number); } return $number; } --was-- here is a simple function to add commas to a number. function comma_format($num){ $number = sprintf("%01.2f", $num); while (preg_match("!(-?\d+)(\d\d\d)!", $number)) { $number = preg_replace("!(-?\d+)(\d\d\d)!","$1,$2", $number); } return $number; } http://www.php.net/manual/en/function.sprintf.php