Get popular tags of a category....

Put this function in functions.php of your active theme. You, can call the tags on category archive page, using shortcode [popular_post_tags] in editor or in case you want to call it using php use do_shortcode like echo do_shortcode('[popular_post_tags]');.

Please, do comment your suggestions and reviews. Thank You! function thePopularTags(){ @ob_start(); $obj = get_queried_object(); $args = ['tax_query'=> [ 'relation' => '=', [ 'taxonomy' => 'category', 'field' => 'term_id', 'terms' => $obj->term_id ] ], 'posts_per_page' => -1, 'fields' => 'ids', 'publish_status' => 'publish']; $posts = query_posts($args); $tagList = []; $tagNames = []; foreach($posts as $k => $v) { foreach(wp_get_post_tags($v) as $tag) { if(!isset($tagList[$tag->term_id])) { $tagList[$tag->term_id] = 1; $tagNames[$tag->term_id] = $tag->name; } else { $tagList[$tag->term_id] = ($tagList[$tag->term_id] + 1); } } } arsort($tagList); $out = ''; $out = '<ul class="popular_tags">'; foreach($tagList as $k => $v) { $out .= '<li><a href="'. get_term_link($k) .'">'. $tagNames[$k] .'</a></li>'; } $out .= '</ul>'; return $out; @ob_end_clean(); } add_shortcode('popular_post_tags', 'thePopularTags');