网站的关键字及网页描述关系网站对搜索引擎的友好程度,如果自己手动加显然太折腾了,那如何让wordpress博客自动为每篇文章自动关键字及网页描述。每篇文章的内容不同,我们该如何让wordpress自动添加文章描述和关键词呢?下面就让我们来看看如何给wordpress自动添加文章描述和关键词。
在你主题的functions.php文件添加以下代码,各个代码的功能解析如下:

add_action ( 'wp_head', 'wp_keywords' ); // 添加关键字
add_action ( 'wp_head', 'wp_description' ); // 添加页面描述
	
	
	/**
 +----------------------------------------------------------
 * 站点关键字()
 +----------------------------------------------------------
 * @return string
 +----------------------------------------------------------
 */
function wp_keywords() {
	global $s, $post;
	$keywords = '';
	if (is_single ()) {  //如果是文章页,关键词则是:标签+分类IDif (get_the_tags ( $post->ID )) {	foreach ( get_the_tags ( $post->ID ) as $tag )		$keywords .= $tag->name . ', ';}foreach ( get_the_category ( $post->ID ) as $category )	$keywords .= $category->cat_name . ', ';$keywords = substr_replace ( $keywords, '', - 2 );
	} elseif (is_home ()) {$keywords = '我是主页关键词';  //主页关键词设置
	} elseif (is_tag ()) {  //标签页关键词设置$keywords = single_tag_title ( '', false );
	} elseif (is_category ()) {//分类页关键词设置$keywords = single_cat_title ( '', false );
	} elseif (is_search ()) {//搜索页关键词设置$keywords = esc_html ( $s, 1 );
	} else {//默认页关键词设置$keywords = trim ( wp_title ( '', false ) );
	}
	if ($keywords) {  //输出关键词echo "<meta name=\"keywords\" content=\"$keywords\" />\n";
	}
}


/**
 +----------------------------------------------------------
 * 站点描述
 +----------------------------------------------------------
 * @return string
 +----------------------------------------------------------
 */
function wp_description() {
	global $s, $post;
	$description = '';
	$blog_name = get_bloginfo ( 'name' );
	if (is_singular ()) {  //文章页如果存在描述字段,则显示描述,否则截取文章内容if (! empty ( $post->post_excerpt )) {	$text = $post->post_excerpt;} else {	$text = $post->post_content;}$description = trim ( str_replace ( array (		"\r\n",		"\r",		"\n",		" ",		" " ), " ", str_replace ( "\"", "'", strip_tags ( $text ) ) ) );if (! ($description))	$description = $blog_name . "-" . trim ( wp_title ( '', false ) );
	} elseif (is_home ()) {//首页显示描述设置$description = $blog_name . "-" . get_bloginfo ( 'description' ) .'首页要显示的描述'; // 首頁要自己加
	} elseif (is_tag ()) {//标签页显示描述设置$description = $blog_name . "有关 '" . single_tag_title ( '', false ) . "' 的文章";
	} elseif (is_category ()) {//分类页显示描述设置$description = $blog_name . "有关 '" . single_cat_title ( '', false ) . "' 的文章";
	} elseif (is_archive ()) {//文档页显示描述设置$description = $blog_name . "在: '" . trim ( wp_title ( '', false ) ) . "' 的文章";
	} elseif (is_search ()) {//搜索页显示描述设置$description = $blog_name . ": '" . esc_html ( $s, 1 ) . "' 的搜索結果";
	} else {//默认其他页显示描述设置$description = $blog_name . "有关 '" . trim ( wp_title ( '', false ) ) . "' 的文章";
	}
	//输出描述
	$description = mb_substr ( $description, 0, 220, 'utf-8' ) . '..';
	echo "<meta name=\"description\" content=\"$description\" />\n";
}