(PHP 4, PHP 5, PHP 7, PHP 8)
number_format — 以千位分隔符方式格式化一個(gè)數字
$number, int $decimals = 0): string$number,$decimals = 0,$dec_point = ".",$thousands_sep = ","本函數可以接受1個(gè)、2個(gè)或者4個(gè)參數（注意：不能是3個(gè)）:
如果只提供第一個(gè)參數，number的小數部分會(huì )被去掉
并且每個(gè)千位分隔符都是英文小寫(xiě)逗號","
如果提供兩個(gè)參數，number將保留小數點(diǎn)后的位數到你設定的值，其余同樓上
如果提供了四個(gè)參數，number
將保留decimals個(gè)長(cháng)度的小數部分,
小數點(diǎn)被替換為dec_point，千位分隔符替換為thousands_sep
number你要格式化的數字
decimals要保留的小數位數
dec_point指定小數點(diǎn)顯示的字符
thousands_sep指定千位分隔符顯示的字符
格式化以后的 number.
| 版本 | 說(shuō)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.
|
示例 #1 number_format() Example
For instance, French notation usually use two decimals, comma (',') as decimal separator, and space (' ') as thousand separator. The following example demonstrates various way to format a number:
<?php
$number = 1234.56;
// english notation (default)
$english_format_number = number_format($number);
// 1,235
// French notation
$nombre_format_francais = number_format($number, 2, ',', ' ');
// 1 234,56
$number = 1234.5678;
// english notation without thousands separator
$english_format_number = number_format($number, 2, '.', '');
// 1234.57
?>
| 版本 | 說(shuō)明 |
|---|---|
| 7.2.0 |
number_format() 現在無(wú)法返回 -0，之前可能返回 -0，因為 number 可能會(huì )是 -0.01。
|