money_format(string,number)

Possible format values:
可使用的格式值：

Padding and Flags:
补白和标记：

• =f - Specifies the character (f) to be used as padding (Example: %=t this uses "t" as padding). Default is space
  =f – 指定用于补白的字符串（案例：%=t ：使用“t”作为补白）。默认是空格
• ^ - Removes the use of grouping characters
  ^ - 删除对分组字符的使用
• + or ( - Specifies how to show positive and negative numbers. If "+" is used, the local setting for + and - will be used (usually a sign in front of negative numbers, and nothing in front of positive numbers). If "(" is used, negative numbers are enclosed in parenthesis. Default is "+"
  + 或 ( - 指定如果显示正数和负数。如果设置为“+”，那么在本地设置中将使用“+”和“-”（通常只在负数前显示“-”，正数之前不显示符号）。如果是" (如使用"，负数将被显示在圆括号内) 默认是“+”)
• ! - Stops the use of currency symbols in the output string
  ! – 禁止在输出的字符串内使用货币符号
• - If "-" is used, all fields are left-justified. Default is right-justified
  - 如果使用“-”，所有的字段将左对齐。默认为右对齐

Field width:
字段宽度：

• x - Specifies the minimum field width (x). Default is 0
  x – 指定字段的最大宽度（x）。默认值为0
• #x - Specifies the maximum number (x) of digits expected to the left of the decimal point. This is used to keep formatted output aligned in the same columns. If the number of digits are bigger than x, this specification is ignored
  #x – 指定位于小数点左边的数字的最大宽度。它将以同列对齐的格式输出。如果给定的数字位数大于x，那么这个超出宽度的部分将被忽略
• .x - Specifies the maximum number (x) of digits expected to the right of the decimal point. If x is 0, the decimal point and the digits to it's right will not be shown. Default is local settings
  .x -指定位于小数点右边的数字的最大宽度。如果x的值为0，那么小数部分将不会显示。默认值为本地设置的值

Conversion characters:
字符转换：

• i - The number is formatted to international currency format
  i – 以国际通用的货币形式定义格式
• n - The number is formatted to national currency format
  n -以本国通用的货币形式定义格式
• % - Returns the % character
  % - 返回%字符

Note: If multiple format values are used, they must be in the same order as shown above.
注意：如果使用多个格式值，它们必须具有相同的格式

Note: This function is affected by local settings.
注意：这个函数采用的是本地设置

<?php
$number = 1234.56;
setlocale(LC_MONETARY, "en_US");
echo money_format("The price is %i", $number);
?>

The price is USD 1,234.56

<?php
$number = 1234.56;
setlocale(LC_MONETARY, "no_NO");
echo money_format("%.2n", $number);
?>

NOK 1.234,56

<?php
$number = -1234.5672;

echo money_format("%=*(#10.2n", $number);
?>

($********1,234.57)