url 주소에서 달러,유료화, GBP 에 따라 가격이 달라져야 하는데요

$url_orig = $url;

        $domain = url_domain($url, "domain");

        $_ret = $this -> getPage($url, $page);
        $_NowPage = $_ret['page'];
        $_RequestPage = $page;
        $url = $_ret['url'];

        
        $url = rawurlencode($url);
        $url = str_replace("%20","%2B",$url);

        //서브도메인 추출하기 22-06-26    
        preg_match("/(([a-z0-9\-]+\.)*)([a-z0-9\-]+)\.([a-z]{3,4}|[a-z]{2,3}\.[a-z]{2})(\:[0-9]+)?$/", $url, $matches);

        $sub_domain = null;

        if($matches[1]) {            
            echo $sub_domain = substr($matches[1], 0, -1);

            switch ($sub_domain) {
              case "www":
                $currency =="USD";
                break;
              case "eu":
                $currency =="EUR";  //유료랑 uk랑 가격이 다름
                break;
              case "uk":
                $currency =="EUR";
                break;

              default:
                $currency =="USD";  //AUD 달러
                break;
            }
        }