Parsing the money_format () function in PHP
In PHP, we often need to format numbers into currency strings. In this case, we need to use PHP's built-in function money_format() function. This article will take you to take a look at this function. First, let's take a look at the syntax of this function:
money_format ( string $format , float $number )
$format: Specifies the string to be formatted and how to format the variables in the string. Single % character optional flags optional field width optional, left precision optional, right precision required, single conversion character.
$number: The number that needs to be formatted.
Return value: Returns the formatted characters. Characters before and after the format string will be returned unchanged. If the number passed in is not a number, null will be returned and E_WARNING will be generated.
Note: money_format()
function This function wraps strfmon()
in the C function library, only It is defined that it can only be used when the system running this function has the
strfmon function, but the
Windows system does not. All
money_format() is available in
Windows is not defined, resulting in an undefined error. Or the
php version you are using is lower than
4.3.
1. The use of positive numbers
<?php $number = 1234.56; // 打印 en_US locale 的国际化格式 setlocale(LC_MONETARY, 'en_US'); echo money_format('%i', $number) . "\n"; // USD 1,234.56 // 打印意大利国家的格式,带两位浮点小数` setlocale(LC_MONETARY, 'it_IT'); echo money_format('%.2n', $number) . "\n"; // Eu 1.234,56 ?>
2. The use of negative numbers
<?php $number = -1234.5672; // 美国国家的格式,使用圆括号 () 标记负数。 // 左侧精度使用十位 setlocale(LC_MONETARY, 'en_US'); echo money_format('%(#10n', $number) . "\n"; // ($ 1,234.57) // 相似的格式,添加了右侧两位小数点的精度,同时用 * 来填充 echo money_format('%=*(#10.2n', $number) . "\n"; // ($********1,234.57)
3. Add some introduction before and after the format string
<?php setlocale(LC_MONETARY, 'en_GB'); $fmt = 'The final value is %i (after a 10%% discount)'; echo money_format($fmt, 1234.56) . "\n"; // The final value is GBP 1,234.56 (after a 10% discount)
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