number_format Format a number with grouped thousands


number_format

(PHP 4, PHP 5)

number_formatFormat a number with grouped thousands

说明

string number_format ( float $number [, int $decimals = 0 ] ) string number_format ( float $number , int $decimals = 0 , string $dec_point = '.' , string $thousands_sep = ',' )

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.

返回值

A formatted version of number.

参数

number

The number being formatted.

decimals

Sets the number of decimal points.

dec_point

Sets the separator for the decimal point.

thousands_sep

Sets the thousands separator.

更新日志

版本 说明
5.4.0 This function now supports multiple bytes in dec_point and thousands_sep. Only the first byte of each separator was used in older versions.

范例

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);
// 1,235

// French notation
$nombre_format_francais number_format($number2','' ');
// 1 234,56

$number 1234.5678;

// english notation without thousands separator
$english_format_number number_format($number2'.''');
// 1234.57

?>

参见


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