// サムネにアイキャッチを使用
add_action( 'wp_head', 'add_meta_to_head' );
function add_meta_to_head() {
	echo '<meta name="thumbnail" content="' .wp_get_attachment_url( get_post_thumbnail_id() ). '" />';
}{"id":418,"date":"2022-10-01T14:14:09","date_gmt":"2022-10-01T05:14:09","guid":{"rendered":"https:\/\/riekoshimizu.com\/?p=418"},"modified":"2023-06-22T14:35:27","modified_gmt":"2023-06-22T05:35:27","slug":"%e5%a4%89%e5%8c%962","status":"publish","type":"post","link":"https:\/\/riekoshimizu.com\/%e5%a4%89%e5%8c%962\/","title":{"rendered":"\u30aa\u30ea\u30b8\u30ca\u30eb\u30a4\u30e9\u30b9\u30c8_\u5909\u53162"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"602\" height=\"602\" src=\"https:\/\/riekoshimizu.com\/wp-content\/uploads\/2022\/10\/i_ill20220903_2.jpg\" alt=\"\" class=\"wp-image-419\"\/><figcaption class=\"wp-element-caption\">\u30aa\u30ea\u30b8\u30ca\u30eb\u30a4\u30e9\u30b9\u30c8\u3002<br>\u5b63\u7bc0\u306e\u5909\u308f\u308a\u76ee\u306b\u629c\u3051\u308b\u9aea\u306e\u6bdb\u3082\u3001\u5b63\u7bc0\u306e\u5909\u308f\u308a\u76ee\u306a\u3093\u3066\u95a2\u4fc2\u306a\u304f\u306a\u308b\u5e74\u9f62\u3002<br>\u3053\u306e\u5909\u5316\u3001\u3001\u3001\u3082\u3046\u4ed5\u65b9\u306a\u3044<img decoding=\"async\" loading=\"lazy\" height=\"19\" width=\"19\" src=\"https:\/\/pds.exblog.jp\/emoji\/109.png\" alt=\"109.png\"><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":419,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[37,59,61,74],"tags":[105,88,17,202],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/riekoshimizu.com\/wp-content\/uploads\/2022\/10\/i_ill20220903_2.jpg","_links":{"self":[{"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/posts\/418"}],"collection":[{"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/comments?post=418"}],"version-history":[{"count":2,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/posts\/418\/revisions"}],"predecessor-version":[{"id":692,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/posts\/418\/revisions\/692"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/media\/419"}],"wp:attachment":[{"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/media?parent=418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/categories?post=418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/riekoshimizu.com\/wp-json\/wp\/v2\/tags?post=418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}