加在主题目录下functions.php里就可以 原始是：如果有站内标签，会自动关联。也就是说，前提是必须要有标签，发布文章的时候存在这个标签就会自动链接。 /* 自动为文章添加标签 */ add_action('save_post', 'xy_add_tags'); function xy_add_tags(){ $tags = get_tags( array('hide_empty' => false) ); $post_id = get_the_ID(); $post_content = get_post($post_id)->post_content; if ($tags) { foreach ( $tags as $tag ) { // 如果文章内容出现了已使用过的标签，自动添加这些标签 if ( strpos($post_content, $tag->name) !== false) wp_set_post_tags( $post_id, $tag->name, true ); } } } //WordPress文章关键词自动内链 function tag_sort($a, $b){ if ( $a->name == $b->name ) return 0; return ( strlen($a->name) > strlen($b->name) ) ? -1 : 1; } function tag_link($content){ $match_num_from = 1; //一个标签少于几次不链接 $match_num_to = 3; //一个标签最多链接几次 $posttags = get_the_tags(); if ($posttags) { usort($posttags, "tag_sort"); foreach($posttags as $tag) { $link = get_tag_link($tag->term_id); $keyword = $tag->name; //链接代码 $cleankeyword = stripslashes($keyword); $url = "".addcslashes($cleankeyword, '$').""; $limit = rand($match_num_from,$match_num_to); //不链接代码 $content = preg_replace( '|(]+>)(.*)('.$ex_word.')(.*)(]*>)|U'.$case, '$1$2%&&&&&%$4$5', $content); $content = preg_replace( '|()|U'.$case, '$1$2%&&&&&%$4$5', $content); $cleankeyword = preg_quote($cleankeyword,'\''); $regEx = '\'(?!((<.*?)|(<a.*?)))('. $cleankeyword . ')(?!(([^]*?)>)|([^>]*?))\'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);