不使用插件,直接修改wordpress主题文件:functions.php
// WordPress 自动为文章添加已使用过的标签 function array2object($array) { // 数组转对象 if (is_array($array)) { $obj = new StdClass(); foreach ($array as $key => $val){ $obj->$key = $val; } } else { $obj = $array; } return $obj; } function object2array($object) { // 对象转数组 if (is_object($object)) { foreach ($object as $key => $value) { $array[$key] = $value; } } else { $array = $object; } return $array; } add_action('save_post', 'auto_add_tags'); function auto_add_tags(){ $tags = get_tags( array('hide_empty' => false) ); $post_id = get_the_ID(); $post_content = get_post($post_id)->post_content; if ($tags) { $i = 0; $arrs = object2array($tags);shuffle($arrs);$tags = array2object($arrs);// 打乱顺序 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, $tag->name) !== false){ if ($i == 5) { // 控制输出数量 break; } wp_set_post_tags( $post_id, $tag->name, true ); $i++; } } } } /* 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); $url = "".addcslashes($cleankeyword, '$').""; $limit = rand($match_num_from,$match_num_to); $content = preg_replace( '|(<a[^>]+>)(.*)('.$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 . ')(?!(([^<>]*?)>)|([^>]*?))\'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 */