<?php$description = ‘‘;$keywords = ‘‘;if (is_home() || is_page()) {   // 将以下引号中的内容改成你的主页description   $description = "博客描述";   // 将以下引号中的内容改成你的主页keywords   $keywords = "关键词，注意关键词之前以英文逗号隔开";}elseif (is_single()) {   $description1 = get_post_meta($post->ID, "description", true);   $description2 = str_replace("\n","",mb_strimwidth(strip_tags($post->post_content), 0, 200, "…", ‘utf-8‘));   // 填写自定义字段description时显示自定义字段的内容，否则使用文章内容前200字作为描述   $description = $description1 ? $description1 : $description2;      // 填写自定义字段keywords时显示自定义字段的内容，否则使用文章tags作为关键词   $keywords = get_post_meta($post->ID, "keywords", true);   if($keywords == ‘‘) {      $tags = wp_get_post_tags($post->ID);          foreach ($tags as $tag ) {                 $keywords = $keywords . $tag->name . ", ";          }      $keywords = rtrim($keywords, ‘, ‘);   }}elseif (is_category()) {   // 分类的description可以到后台 - 文章 -分类目录，修改分类的描述   $description = category_description();   $keywords = single_cat_title(‘‘, false);}elseif (is_tag()){   // 标签的description可以到后台 - 文章 - 标签，修改标签的描述   $description = tag_description();   $keywords = single_tag_title(‘‘, false);}$description = trim(strip_tags($description));$keywords = trim(strip_tags($keywords));?><meta name="description" content="<?php echo $description; ?>" /><meta name="keywords" content="<?php echo $keywords; ?>" />

<?php if (is_home()){$description = "博客描述";$keywords = "关键词，注意关键词之前以英文逗号隔开";}elseif(is_single()){if ($post->post_excerpt) {$description = $post->post_excerpt;}elseif(function_exists(‘wp_thumbnails_excerpt‘)){$description = wp_thumbnails_excerpt($post->post_content, true);}else {$description = $post->post_title;}$keywords = "";$tags = wp_get_post_tags($post->ID);foreach ($tags as $tag ) {$keywords = $keywords . "," . $tag->name;}}elseif(is_category()){$description = category_description();}echo "<meta name=\"description\" content=\"$description\" /><meta name=\"keywords\" content=\"$keywords\" />";?>

if (is_category(‘音乐‘)) {    $description = ‘这里填音乐分类的描述‘;    $keywords = ‘这里填音乐分类的关键字，半角逗号隔开‘;}elseif (is_category(‘电影‘)) {    $description = ‘这里填电影分类的描述‘;    $keywords = ‘这里填电影分类的关键字，半角逗号隔开‘;}elseif (is_category(‘戏剧‘)) {    $description = ‘这里填戏剧分类的描述‘;    $keywords = ‘这里填戏剧分类的关键字，半角逗号隔开‘;}