PHP : How to install Intl extension in Xampp ?

The PHP Internationalization extension is used, amongst others, by Symfony (for validators). This extension allows you to write codes like this one :

$formatter = new NumberFormatter('en_US', NumberFormatter::DECIMAL);
echo $formatter->format(1234567.89); // 1,234,567.89

$formatter = new NumberFormatter('fr_FR', NumberFormatter::DECIMAL);
echo $formatter->format(1234567.89); // 1 234 567,89

$formatter = new NumberFormatter('en_US', NumberFormatter::CURRENCY);
echo $formatter->getTextAttribute(NumberFormatter::CURRENCY_CODE); // USD

$formatter = new NumberFormatter('pt_BR', NumberFormatter::CURRENCY);
echo $formatter->getTextAttribute(NumberFormatter::CURRENCY_CODE); // BRL

and so much more, including formatting of currency, number and date/time as well as UCA-conformant collations (customizable method to compare two strings).

To activate this extension in Xampp, just edit your php.ini (i.e. in C:\xampp\php directory) and remove the semicolon to uncomment this line :


Eventually don’t forget to restart Apache !