get_the_post_thumbnail_url( $post->ID, array( 500, 400))参考記事
https://www.codegrepper.com/code-examples/php/get+featured+image+post+wordpress+by+post+id
get_the_post_thumbnail_url( $post->ID, array( 500, 400))https://www.codegrepper.com/code-examples/php/get+featured+image+post+wordpress+by+post+id
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