Отображение рубля в woocommerce

add_filter('woocommerce_currency_symbol', 'change_existing_currency_symbol', 10, 2);
 
function change_existing_currency_symbol( $currency_symbol, $currency ) {
     switch( $currency ) {
          case 'RUB': $currency_symbol = ' руб.'; break;
     }
     return $currency_symbol;
}

add_filter('woocommerce_currency_symbol', 'change_existing_currency_symbol', 10, 2);
 
function change_existing_currency_symbol( $currency_symbol, $currency ) {
     switch( $currency ) {
          case 'RUB': $currency_symbol = ' <i class="fas fa-ruble-sign"></i>'; break;
     }
     return $currency_symbol;
}