获取WordPress当前分类文章所有标签 – WordPress 教程

如果需要在分类列表页面，显示当前分类文章中添加的所有标签，方便读者阅读自己喜欢的内容，下面的代码可以帮你实现这个功能。

首先，在主题functions.php模板文件中添加以下函数：

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;}

其次，将下面调用输出代码，添加到主题archive.php模板适当位置：

<?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;?>

个人感觉放到头部调用函数：

<?php get_header(); ?>

下面比较合适。

最后，再适当加上样式即可：

.cat-tag{    float: left;    width: 100%;}.cat-tag li a{    float: left;    margin: 0 5px;}