WordPress纯代码实现tag中文转换为ID

wordpress的tag标签量较小的时候适合seo，但是多了以后，特别是中文同音不同调的tag，使用转换成拼音可能导致新tag自动显示为旧tag文字的错误
文章及tag较多的时候，建议使用tag的id，纯代码实现方法如下，主题的function.php中加入以下代码即可
注意：适合新站，旧站会导致tag的url 404错误
add_action('generate_rewrite_rules','tag_rewrite_rules');
add_filter('term_link','tag_term_link',10,3);
add_action('query_vars', 'tag_query_vars');
function tag_rewrite_rules($wp_rewrite){
$new_rules = array(
'tag/(\d+)/feed/(feed|rdf|rss|rss2|atom)/?$' => 'index.php?tag_id=$matches[1]&feed=$matches[2]',
'tag/(\d+)/(feed|rdf|rss|rss2|atom)/?$' => 'index.php?tag_id=$matches[1]&feed=$matches[2]',
'tag/(\d+)/embed/?$' => 'index.php?tag_id=$matches[1]&embed=true',
'tag/(\d+)/page/(\d+)/?$' => 'index.php?tag_id=$matches[1]&paged=$matches[2]',
'tag/(\d+)/?$' => 'index.php?tag_id=$matches[1]',);
$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;}
function tag_term_link($link,$term,$taxonomy){
if($taxonomy=='post_tag'){
return home_url('/tag/'.$term->term_id);}
return $link;}
function tag_query_vars($public_query_vars){
$public_query_vars[] = 'tag_id';
return $public_query_vars;}