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Formatting Monetary Values in PHP
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Formatting Monetary Values in PHP

InfinityCoder November 16, 2016

You have a number and you want to print it with thousands and decimal separators. For instance, you want to display prices for items in a shopping cart.

Use the NumberFormatter class with the NumberFormatter::CURRENCY format style:

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$number = 1234.56;
 
// US uses $ , and .
// $formatted1 is $1,234.56
$usa = new NumberFormatter("en-US", NumberFormatter::CURRENCY);
$formatted1 = $usa->format($number);
 
// France uses , and €
// $formatted2 is 1 234,56 €
$france = new NumberFormatter("fr-FR", NumberFormatter::CURRENCY);
$formatted2 = $france->format($number);

The NumberFormatter::CURRENCY format style formats a number by inserting the correct currency symbol, decimal, and thousands separators for the locale used to create the NumberFormatter object instance.

It assumes that the currency to use is the one native to the locale—US Dollars for the en-US locale, Euro for the fr-FR locale, and so on.

To produce the right format for a currency other than the locale’s native currency, use the formatCurrency() method. Its second argument lets you specify the currency to use.

For example, what’s the correct way, in the USA, to format the price of something in Euro?

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$number = 1234.56;
 
// US uses € , and . for Euro
// $formatted is €1,234.56
$usa = new NumberFormatter("en-US", NumberFormatter::CURRENCY);
$formatted = $usa->formatCurrency($number, 'EUR');

ISO-4217 specifies the three-letter codes to use for the various currencies of Earth.

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