168         foreach ($tags as $tag) {
169             $links[] = $this->tagLink($tag);
177      * @param string $tag the tag the link shall point to
182     public function tagLink($tag, $title = '', $dynamic = false) {  argument
184         $svtag = $tag;
185         $tagTitle = str_replace('_', ' ', noNS($tag));
189             $tag = $resolver->resolveId($tag);
190             $exists = page_exists($tag);
193             resolve_pageid($this->namespace, $tag, $exists);
197             $url   = wl($tag);
200                 $heading = p_get_first_heading($tag, false);
216             $url   = wl($tag, ['do'=>'showtag', 'tag'=>$svtag]);
224             'tooltip' => hsc($tag),
389         foreach ($tags as $tag) {
390             if (!isset($indexedPagesWithTags[$tag])) continue;
393             $pages = array_unique($indexedPagesWithTags[$tag]);
403                 $tagOccurrences[$tag] = count($pages);
406                 $tagOccurrences[$tag] = 0;
410                         $tagOccurrences[$tag]++;
414                 $tagOccurrences[$tag] = 0;
418                             $tagOccurrences[$tag]++ ;
425             if ($tagOccurrences[$tag] == 0) {
426                 unset($tagOccurrences[$tag]);
456         foreach ($queryTags as $i => $tag) {
457             if ($tag[0] == '+' || $tag[0] == '-') {
458                 $cleanTags[$i] = substr($tag, 1);
460                 $cleanTags[$i] = $tag;
472             $tag = $cleanTags[$i];
473             if (!is_array($pages[$tag])) {
474                 $pages[$tag] = [];
478                 $result = array_intersect($result, $pages[$tag]);
480                 $result = array_diff($result, $pages[$tag]);
482                 $result = array_unique(array_merge($result, $pages[$tag]));
530      * @param string $tag
533     protected function cleanTag($tag) {  argument
534         $prefix = substr($tag, 0, 1);
535         $tag = $this->replacePlaceholders($tag);
537             return $prefix.cleanID($tag);
539             return cleanID($tag);
546      * @param string $tag
549     protected function replacePlaceholders($tag) {  argument
582         return str_replace(array_keys($replace), array_values($replace), $tag);
679         foreach($queryTags as $tag) {
680             if ($tag[0] == "+" and !in_array(substr($tag, 1), $pageTags)) {
683             if ($tag[0] == "-" and in_array(substr($tag, 1), $pageTags)) {
686             if (in_array($tag, $pageTags)) {