Programming PHP, 3rd Edition

Name

number_format

Synopsis

string number_format(float number[, int precision[, 
    string decimal_separator, string thousands_separator]])

Creates a string representation of number. If precision is given, the number is rounded to that many decimal places; the default is no decimal places, creating an integer. If decimal_separator and thousands_separator are provided, they are used as the decimal-place character and thousands separator, respectively. They default to the English locale versions (. and ,). For example:

$number = 7123.456;
$english = number_format($number, 2); // 7,123.45
$francais = number_format($number, 2, ',', ' '); // 7 123,45
$deutsche = number_format($number, 2, ',', '.'); // 7.123,45

If rounding occurs, proper rounding is performed, which may not be what you expect (see round).