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(PHP 4 >= 4.3.0, PHP 5)
money_format — Formats a number as a currency string
说明 string money_format ( string $format , float $number )money_format() returns a formatted version of number. This function wraps the C library function strfmon(), with the difference that this implementation converts only one number at a time.
参数format
The format specification consists of the following sequence:
a % character
optional flags
optional field width
optional left precision
optional right precision
a required conversion character
Flags
One or more of the optional flags below can be used:=f
The character = followed by a (single byte) character f to be used as the numeric fill character. The default fill character is space.
^Disable the use of grouping characters (as defined by the current locale).
+ or (Specify the formatting style for positive and negative numbers. If + is used, the locales equivalent for + and - will be used. If ( is used, negative amounts are enclosed in parenthesis. If no specification is given, the default is +.
!Suppress the currency symbol from the output string.
-If present, it will make all fields left-justified (padded to the right), as opposed to the default which is for the fields to be right-justified (padded to the left).
Field width
w
A decimal digit string specifying a minimum field width. Field will be right-justified unless the flag - is used. Default value is 0 (zero).
Left precision
#n
The maximum number of digits (n) expected to the left of the decimal character (e.g. the decimal point). It is used usually to keep formatted output aligned in the same columns, using the fill character if the number of digits is less than n. If the number of actual digits is bigger than n, then this specification is ignored.
If grouping has not been suppressed using the ^ flag, grouping separators will be inserted before the fill characters (if any) are added. Grouping separators will not be applied to fill characters, even if the fill character is a digit.
To ensure alignment, any characters appearing before or after the number in the formatted output such as currency or sign symbols are padded as necessary with space characters to make their positive and negative formats an equal length.
Right precision
.p
A period followed by the number of digits (p) after the decimal character. If the value of p is 0 (zero), the decimal character and the digits to its right will be omitted. If no right precision is included, the default will dictated by the current local in use. The amount being formatted is rounded to the specified number of digits prior to formatting.
Conversion characters
i
The number is formatted according to the locales international currency format (e.g. for the USA locale: USD 1,.).
nThe number is formatted according to the locales national currency format (e.g. for the de_DE locale: EU1.,).
%Returns the % character.
numberThe number to be formatted.
返回值Returns the formatted string. Characters before and after the formatting string will be returned unchanged. Non-numeric number causes returning NULL and emitting E_WARNING.
注释Note:
The function money_format() is only defined if the system has strfmon capabilities. For example, Windows does not, so money_format() is undefined in Windows.
Note:
The LC_MONETARY category of the locale settings, affects the behavior of this function. Use setlocale() to set to the appropriate default locale before using this function.
范例
Example #1 money_format() Example
We will use different locales and format specifications to illustrate the use of this function.
<?php$number=.;//let'sprinttheinternationalformatfortheen_USlocalesetlocale(LC_MONETARY,'en_US');echomoney_format('%i',$number)."n";//USD1,.//Italiannationalformatwith2decimals`setlocale(LC_MONETARY,'it_IT');echomoney_format('%.2n',$number)."n";//Eu1.,//Usinganegativenumber$number=-.;//USnationalformat,using()fornegativenumbers//anddigitsforleftprecisionsetlocale(LC_MONETARY,'en_US');echomoney_format('%(#n',$number)."n";//($1,.)//Similarformatasabove,addingtheuseof2digitsofright//precisionand'*'asafillcharacterechomoney_format('%=*(#.2n',$number)."n";//($********1,.)//Let'sjustifytotheleft,withpositionsofwidth,8digitsof//leftprecision,2ofrightprecision,withouthgroupingcharacter//andusingtheinternationalformatforthede_DElocale.setlocale(LC_MONETARY,'de_DE');echomoney_format('%=*^-#8.2i',.)."n";//Eu,****//Let'saddsomeblurbbeforeandaftertheconversionspecificationsetlocale(LC_MONETARY,'en_GB');$fmt='Thefinalvalueis%i(aftera%%discount)';echomoney_format($fmt,.)."n";//ThefinalvalueisGBP1,.(aftera%discount)?> 参见setlocale() - Set locale information sscanf() - 根据指定格式解析输入的字符 sprintf() - Return a formatted string printf() - 输出格式化字符串 number_format() - 以千位分隔符方式格式化一个数字
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