Method getDefaultCurrencyArray

/*
 * Administration only - currency and currencies view
 */
public static function getDefaultCurrencyArray()
{
    if (self::$defaultcurrencyarray === false) {
        $db = Factory::getDBO();
        $query = ' SELECT a.id, a.title, a.code, a.exchange_rate FROM #__phocacart_currencies AS a' . ' WHERE a.exchange_rate = 1' . ' ORDER BY a.code';
        $db->setQuery($query);
        $c = $db->loadAssoc();
        if (!empty($c)) {
            self::$defaultcurrencyarray = $c;
        } else {
            self::$defaultcurrencyarray = false;
        }
    }
    return self::$defaultcurrencyarray;
}