/** * */ public static function canConvert($ps_from, $ps_to) { $va_currency_data = WLPlugCurrencyConversionEuroBank::_loadData(); $ps_from = parent::normalizeCurrencySpecifier($ps_from); $ps_to = parent::normalizeCurrencySpecifier($ps_to); if (isset($va_currency_data[$ps_from]) && isset($va_currency_data[$ps_to])) { return true; } return false; }