纯代码实现wordpress5.8+可用sitemap.xml文件

<?php
echo '<?xml version="1.0" encoding="UTF-8"?>';
echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">';
require('./wp-blog-header.php');
header("Content-type: text/xml");
header('HTTP/1.1 200 OK');
$posts_to_show =300;
?>
  <url>
      <loc><?php echo 'https://'.$_SERVER['HTTP_HOST']; ?></loc>
      <mobile:mobile type="mobile"/>
      <lastmod><?php $ltime = get_lastpostmodified(GMT);$ltime = gmdate('Y-m-d\TH:i:s+00:00', strtotime($ltime)); echo $ltime; ?></lastmod>
      <changefreq>daily</changefreq>
      <priority>1.0</priority>
  </url>
<?php
$myposts = get_posts( "numberposts=" . $posts_to_show );
foreach( $myposts as $post ) { ?>
  <url>
      <loc><?php the_permalink(); ?></loc>
      <lastmod><?php the_time('c') ?></lastmod>
      <changefreq>monthly</changefreq>
      <priority>0.7</priority>
    </url>
  <url>
      <loc><?php the_permalink(); ?></loc>
      <mobile:mobile type="autoadapt"/>
      <lastmod><?php the_time('c') ?></lastmod>
      <changefreq>monthly</changefreq>
      <priority>0.7</priority>
    </url>
<?php } ?>
<?php
/* 单页面 */
$mypages = get_pages();
if(count($mypages) > 0) {
    foreach($mypages as $page) { ?>
      <url>
      <loc><?php echo get_page_link($page->ID); ?></loc>
      <lastmod><?php echo str_replace(" ","T",get_page($page->ID)->post_modified); ?></lastmod>
      <changefreq>monthly</changefreq>
      <priority>0.6</priority>
    </url>
    <url>
      <loc><?php echo get_page_link($page->ID); ?></loc>
      <mobile:mobile type="autoadapt"/>
      <lastmod><?php echo str_replace(" ","T",get_page($page->ID)->post_modified); ?></lastmod>
      <changefreq>monthly</changefreq>
      <priority>0.5</priority>
  </url>
<?php }} /* 单页面循环结束 */ ?>
<?php
/* 博客分类 */
$terms = get_terms('category', 'orderby=name&hide_empty=0' );
$count = count($terms);
if($count > 0){
foreach ($terms as $term) { ?>
     <url>
      <loc><?php echo get_term_link($term, $term->slug); ?></loc>
      <changefreq>monthly</changefreq>
      <priority>0.6</priority>
    </url>
    <url>
      <loc><?php echo get_term_link($term, $term->slug); ?></loc>
      <mobile:mobile type="autoadapt"/>
      <changefreq>weekly</changefreq>
      <priority>0.8</priority>
  </url>
<?php }} /* 分类循环结束 */?>
</urlset>

rewrite ^/sitemap.xml$ /sitemap.php last;