/* 标签以id+html方式展示*/
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){
    $new_rules = array(
        'tag/(\d+)/feed/(feed|rdf|rss|rss2|atom).html' => 'index.php?tag_id=$matches[1]&feed=$matches[2]',
        'tag/(\d+)/(feed|rdf|rss|rss2|atom).html' => 'index.php?tag_id=$matches[1]&feed=$matches[2]',
        'tag/(\d+)/embed.html' => 'index.php?tag_id=$matches[1]&embed=true',
        'tag/(\d+)/page/(\d+).html' => 'index.php?tag_id=$matches[1]&paged=$matches[2]',
        'tag/(\d+).html' => '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.'.html');
    }
    return $link;
}
function tag_query_vars($public_query_vars){
    $public_query_vars[] = 'tag_id';
    return $public_query_vars;
}