NumberFormatter::parseCurrency

numfmt_parse_currency

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

NumberFormatter::parseCurrency -- numfmt_parse_currencyParse a currency number

说明

面向对象风格

public float NumberFormatter::parseCurrency ( string $value , string &$currency [, int &$position ] )

过程化风格

float numfmt_parse_currency ( NumberFormatter $fmt , string $value , string &$currency [, int &$position ] )

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

参数

fmt

NumberFormatter object.

currency

Parameter to receive the currency name (3-letter ISO 4217 currency code).

position

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.

范例

Example #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";
?>

Example #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";
?>

以上例程会输出:

We have 1234567.89 in USD

参见

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User Contributed Notes 2 notes

up
2
daniel at danielphenry dot com
2 years ago
The given examples confused me a bit. This may be a bit more clear:

$region = 'en_US';
$currency = 'USD';
$formatter = new NumberFormatter($region, NumberFormatter::CURRENCY);
echo $formatter->parseCurrency(12543.67, $currency);

Responds with:

$12,543.67
up
0
info at mm-newmedia dot de
4 months 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.
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