修正Google对网站地图的报错，添加更新日期

add_filter('wp_sitemaps_posts_entry', function ($entry, $post) {
    $entry['lastmod'] = get_gmt_from_date($post->post_modified, 'Y-m-d\TH:i:s\Z');
    return $entry;
}, 10, 2);

add_filter('wp_sitemaps_posts_entry', function ($entry, $post) {
    $entry['changefreq'] = 'weekly';
    return $entry;
}, 10, 2);

修改默认的robots.txt

add_action('do_robots', function () {
    // 定义你的自定义 robots.txt 内容
    header('Content-Type: text/plain; charset=utf-8');
    echo "User-agent: *\n";
    echo "Disallow: /wp-admin/\n";
    echo "Disallow: /wp-admin/admin-ajax.php\n";
    echo "Disallow: /wp-login.php\n";
    echo "Disallow: /wp-content/*\n";
    echo "Disallow: /users/*\n";
    echo "Disallow: /author/*\n";
    echo "Disallow: /tastream/*\n";
    echo "Sitemap: " . site_url('/sitemap.xml') . "\n";
});