其他功能性代码

Wordpress

1. tag标签内链

自动为文章添加tag标签内链，将代码放入主题functions.php文件内

/* 自动为文章内的标签添加内链开始 */
$match_num_from = 1;        //一篇文章中同一个标签少于几次不自动链接
$match_num_to = 1;      //一篇文章中同一个标签最多自动链接几次
function tag_sort($a, $b){
    if ( $a->name == $b->name ) return 0;
    return ( strlen($a->name) > strlen($b->name) ) ? -1 : 1;
}
function tag_link($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;
                $cleankeyword = stripslashes($keyword);
                $url = "";
                $limit = rand($match_num_from,$match_num_to);
                $content = preg_replace( '|(]+>)(.*)('.$ex_word.')(.*)(]*>)|U'.$case, '$1$2$4$5', $content);
                $content = preg_replace( '|()|U'.$case, '$1$2$4$5', $content);
                $cleankeyword = preg_quote($cleankeyword,'\'');
                $regEx = '\'(?!((<.*?)|(]*?)>)|([^>]*?))\'s' . $case;
                $content = preg_replace($regEx,$url,$content,$limit);
                $content = str_replace( '', stripslashes($ex_word), $content);
            }
        }
    return $content;
}
add_filter('the_content','tag_link',1);
/* 自动为文章内的标签添加内链结束 */

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