wp/wordpress调用当前分类下的子标签方法
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wp有官方的标签云,每个页面的标签都一样,这样很难满足正常的需要,例如:我们想在当前分类下显示所属的子标签,这个功能就很难用官方标签云实现了,只能我们自己匹配数据库,读取数据了,下面就是wp/wordpress调用当前分类下的子标签方法:
1.funtions.php添加:
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; }
2.在需要出调用:
<?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; ?>
这样就能全部输出当前分类下的所有标签了,对所有标签。
当然,有人说,我不想要全部,只需要15个,那就修改调用代码:
<?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 $key=> $tag) { if($key>15){break;} $content .= "<li><a href=\"".get_tag_link($tag->term_id)."\">".$tag->name."</a></li>"; } } $content .= "</ul>"; echo $content; ?>
最终效果,就看当前主题的分类菜单顶部标签吧
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