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number_format

(PHP 3, PHP 4 >= 4.0.0)

number_format -- Format a number with grouped thousands

Description

string number_format ( float number [, int decimals [, string dec_point [, string thousands_sep]]])

number_format() returns a formatted version of number. This function accepts either one, two or four parameters (not three):

If only one parameter is given, Number will be formatted without decimals, but with a comma (",") between every group of thousands.

If two parameters are given, number will be formatted with decimals decimals with a dot (".") in front, and a comma (",") between every group of thousands.

If all four parameters are given, number will be formatted with decimals decimals, dec_point instead of a dot (".") before the decimals and thousands_sep instead of a comma (",") between every group of thousands.

Note: Only the first character of thousands_sep is used. For example, if you use foo as thousands_sep on the number 1000, number_format() will return 1f000.

Example 1. number_format() Example

For instance, French notation usually use two decimals, comma (',') as decimal separator, and space (' ') as thousand separator. This is achieved with this line : 

<?php

    $number = 1234.56;

    // english notation (default)
    $english_format_number = number_format($number);
    // 1,234.56

    // French notation
    $nombre_format_francais = number_format($number, 2, ',', ' ');
    // 1 234,56

    $number = 1234.5678;

    // english notation without thousands seperator
    $english_format_number = number_format($number, 2, '.', '');
    // 1234.57

?>

Note: See also: sprintf(), printf() and sscanf().

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