/**
* Sets the default currency to use when creating fMoney objects
*
* @param string $iso_code The ISO code (three letters, e.g. `'USD'`) for the new default currency
* @return void
*/
public static function setDefaultCurrency($iso_code)
{
if (!isset(self::$currencies[$iso_code])) {
throw new fProgrammerException('The currency specified, %1$s, is not a valid currency. Must be one of: %2$s.', $iso_code, join(', ', array_keys(self::$currencies)));
}
self::$default_currency = $iso_code;
}
