https://app.rakuten.co.jp/services/api/IchibaItem/Search/20220601?applicationId=b81babe0dea9170ecdaf3c019d8709b6&affiliateId=0433111a.0d75cb85.0433111b.a7f1907e&keyword=%E3%81%95%E3%82%89%E3%82%8A%E3%81%A8%E3%81%97%E3%81%9F%E8%B3%AA%E6%84%9F%E3%81%A7%E6%B0%97%E6%8C%81%E3%81%A1%E3%81%AE%E3%82%88%E3%81%84%E7%9D%80%E5%BF%83%E5%9C%B0%E3%80%82%E3%83%A9%E3%82%A4%E3%83%B3%E5%85%A5%E3%82%8A%EF%BC%B6%E3%83%8D%E3%83%83%E3%82%AF%EF%BC%B4%E3%82%B7%E3%83%A3%E3%83%84%E3%80%80%E5%A4%A7%E3%81%8D%E3%81%84%E3%82%B5%E3%82%A4%E3%82%BA+%E3%83%AC%E3%83%87%E3%82%A3%E3%83%BC%E3%82%B9%E3%80%90%E3%82%A2%E3%83%AA%E3%83%8E%E3%83%9E%2FAlinoma%E3%80%91&format=json&formatVersion=2&hits=5&page=1&sort=standard

URL_rss=XMLを見てみる。

stdClass Object
(
    [GenreInformation] => Array
        (
        )

    [Items] => Array
        (
        )

    [TagInformation] => Array
        (
        )

    [carrier] => 0
    [count] => 0
    [first] => 0
    [hits] => 0
    [last] => 0
    [page] => 1
    [pageCount] => 0
)