NumberFormatter::parseCurrency

numfmt_parse_currency

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)

NumberFormatter::parseCurrency -- numfmt_parse_currency — Parse a currency number

说明

面向对象风格

public NumberFormatter::parseCurrency(string $string, string &$currency, int &$offset = null): float|false

过程化风格

numfmt_parse_currency(
    NumberFormatter $formatter,
    string $string,
    string &$currency,
    int &$offset = null
): float|false

Parse a string into a float and a currency using the current formatter.

参数

formatter: NumberFormatter object.
currency: Parameter to receive the currency name (3-letter ISO 4217 currency code).
offset: Offset in the string at which to begin parsing. On return, this value will hold the offset at which parsing ended.

返回值

The parsed numeric value or false on error.

示例

示例 #1 numfmt_parse_currency() example

<?php
$fmt = numfmt_create( 'de_DE', NumberFormatter::CURRENCY );
$num = "1.234.567,89\xc2\xa0$";
echo "We have ".numfmt_parse_currency($fmt, $num, $curr)." in $curr\n";
?>

示例 #2 OO example

<?php
$fmt = new NumberFormatter( 'de_DE', NumberFormatter::CURRENCY );
$num = "1.234.567,89\xc2\xa0$";
echo "We have ".$fmt->parseCurrency($num, $curr)." in $curr\n";
?>

以上示例会输出：

We have 1234567.89 in USD

参见

numfmt_get_error_code() - Get formatter's last error code
numfmt_parse() - Parse a number
numfmt_format_currency() - Format a currency value

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info at mm-newmedia dot de ¶

7 years ago

In reply to daniel at danielphenry dot com example note beneath. The given example by Daniel returns false under PHP7.x, which is a normal behavior since NumberFormatter::parseCurrency() is a method for parsing currency strings. It is trying to split up the given string in a float and a currency. 

While using strict types under PHP7 the following example makes it more clearer.

<?php
declare(strict_types=1);
namespace MMNewmedia;

$oParser = new \NumberFormatter('de_DE', \NumberFormatter::CURRENCY);
var_dump($oParser->parseCurrency("1.234.567,89\xc2\xa0€", $currency), $currency));
?>

This example returns: "float(1234567.89) string(3) "EUR"

This is the expected behavior.

The following example runs into a type error, which is absolutely right, since this method is vor parsing strings and not vor formatting floats into currency strings.

<?php
declare(strict_types=1);
namespace MMNewmedia;

try {
    $oCurrencyParser = new \NumberFormatter('de_DE', \NumberFormatter::CURRENCY);
    $currency = 'EUR';
    var_dump($oCurrencyParser->parseCurrency(1.234, $currency), $currency);
} catch (\TypeError $oTypeError) {
    var_dump($oTypeError->getMessage());
}
?>

This example returns "NumberFormatter::parseCurrency() expects parameter 1 to be string, float given".

If you want to parse floats into a currency string use the http://php.net/manual/en/numberformatter.formatcurrency.php method as shown in the next example.

<?php
declare(strict_types=1);
namespace MMNewmedia;

$oFormatter = new \NumberFormatter('de_DE', \NumberFormatter::CURRENCY);
var_dump($oFormatter->formatCurrency(1234567.89, 'EUR'));
?>

This returns string(17) "1.234.567,89 €" as expected.