免插件为WordPress文章中标签添加内链
给文章标签添加内链,意思就是说,如果你文章中出现了和标签一样的文字,那么这个文字就会自动成为标签链接,你点击这个链接就会查看到所有含有该标签的文章,这个能方便用户浏览,据说还利于SEO。下面说说方法:
把下面的代码添加到function.php中就可以了 ![]()
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//自动为文章标签添加该标签的链接$match_num_from = 1; // 一个标签在文章中出现少于多少次不添加链接$match_num_to = 1; // 一篇文章中同一个标签添加几次链接add_filter('the_content','tag_link',1);//按长度排序function tag_sort($a, $b){ if ( $a->name == $b->name ) return 0; return ( strlen($a->name) > strlen($b->name) ) ? -1 : 1;}//为符合条件的标签添加链接function tag_link($content){ global $match_num_from,$match_num_to; $posttags = get_the_tags(); if ($posttags) { usort($posttags, "tag_sort"); foreach($posttags as $tag) { $link = get_tag_link($tag->term_id); $keyword = $tag->name; //链接的代码 $cleankeyword = stripslashes($keyword); $url = "<a href=\"$link\" title=\"".str_replace('%s',addcslashes($cleankeyword, '$'),__('View all posts in %s'))."\""; $url .= ' target="_blank"'; $url .= ">".addcslashes($cleankeyword, '$')."</a>"; $limit = rand($match_num_from,$match_num_to); //不链接的代码 $content = preg_replace( '|(<a[^>]+>)(.*)('.$ex_word.')(.*)(</a[^>]*>)|U'.$case, '$1$2%&&&&&%$4$5', $content); $content = preg_replace( '|(<img)(.*?)('.$ex_word.')(.*?)(>)|U'.$case, '$1$2%&&&&&%$4$5', $content); $cleankeyword = preg_quote($cleankeyword,'\''); $regEx = '\'(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^<>]*?)>)|([^>]*?</a>))\'s' . $case; $content = preg_replace($regEx,$url,$content,$limit); $content = str_replace( '%&&&&&%', stripslashes($ex_word), $content); } } return $content;} |
看看效果图:


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