将此添加到您的函数中。php文件并将“未分类”替换为类别名称

add_filter( \'getarchives_where\', \'wse95776_archives_by_cat\', 10, 2 );
/**
 * Filter the posts by category slug
 * @param $where
 * @param $r
 *
 * @return string
 */
function wse95776_archives_by_cat( $where, $r ){
    return "WHERE wp_posts.post_type = \'post\' AND wp_posts.post_status = \'publish\' AND wp_terms.slug = \'Uncategorized\' AND wp_term_taxonomy.taxonomy = \'category\'";
}

add_filter( \'getarchives_join\', \'wse95776_archives_join\', 10, 2 );

/**
 * Defines the necessary joins to query the terms
 * @param $join
 * @param $r
 *
 * @return string
 */
function wse95776_archives_join( $join, $r ){
    return \'inner join wp_term_relationships on wp_posts.ID = wp_term_relationships.object_id inner join wp_term_taxonomy on wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id inner join wp_terms on wp_term_taxonomy.term_id = wp_terms.term_id\';
}