调用WordPress当前分类列表标签

function get_category_tags($args) {

    global $wpdb;

    $tags = $wpdb->get_results

    ("

        SELECT DISTINCT terms2.term_id as tag_id, terms2.name as tag_name

        FROM

            $wpdb->posts as p1

            LEFT JOIN $wpdb->term_relationships as r1 ON p1.ID = r1.object_ID

            LEFT JOIN $wpdb->term_taxonomy as t1 ON r1.term_taxonomy_id = t1.term_taxonomy_id

            LEFT JOIN $wpdb->terms as terms1 ON t1.term_id = terms1.term_id,

            $wpdb->posts as p2

            LEFT JOIN $wpdb->term_relationships as r2 ON p2.ID = r2.object_ID

            LEFT JOIN $wpdb->term_taxonomy as t2 ON r2.term_taxonomy_id = t2.term_taxonomy_id

            LEFT JOIN $wpdb->terms as terms2 ON t2.term_id = terms2.term_id

        WHERE

            t1.taxonomy = 'category' AND p1.post_status = 'publish' AND terms1.term_id IN (".$args['categories'].") AND

            t2.taxonomy = 'post_tag' AND p2.post_status = 'publish'

            AND p1.ID = p2.ID

        ORDER by tag_name

    ");

    $count = 0;

    if($tags) {

        foreach ($tags as $tag) {

            $mytag[$count] = get_term_by('id', $tag->tag_id, 'post_tag');

            $count++;

        }

    } else {

      $mytag = NULL;

    }

    return $mytag;

}

<?php

    $cat= single_cat_title('', false);

    $args = array( 'categories' => get_cat_ID($cat));

    $tags = get_category_tags($args);

    $content .= "<ul class='cat-tag'>";

    if(!empty($tags)) {

        foreach ($tags as $tag) {

            $content .= "<li><a href=\"".get_tag_link($tag->term_id)."\">".$tag->name."</a></li>";

        }

    }

    $content .= "</ul>";

    echo $content;

?>