wordpress自動添加meta keywords 和description關(guān)鍵詞和描述

在主題的function里面添加

/*添加meta關(guān)鍵詞描述*/

add_action ( 'wp_head', 'wp_keywords' ); // 添加關(guān)鍵字

add_action ( 'wp_head', 'wp_description' ); // 添加頁面描述

/**

+----------------------------------------------------------

* 站點(diǎn)關(guān)鍵字(

+----------------------------------------------------------

* @return string

+----------------------------------------------------------

*/

function wp_keywords() {

global $s, $post;

$keywords = '';

if (is_single ()) {   //如果是文章頁，關(guān)鍵詞則是：標(biāo)簽+分類ID

if (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 = '我是主頁關(guān)鍵詞';   //主頁關(guān)鍵詞設(shè)置

} elseif (is_tag ()) {   //標(biāo)簽頁關(guān)鍵詞設(shè)置

$keywords = single_tag_title ( '', false );

} elseif (is_category ()) {//分類頁關(guān)鍵詞設(shè)置

$keywords = single_cat_title ( '', false );

} elseif (is_search ()) {//搜索頁關(guān)鍵詞設(shè)置

$keywords = esc_HTML ( $s, 1 );

} else {//默認(rèn)頁關(guān)鍵詞設(shè)置

$keywords = trim ( wp_title ( '', false ) );

}

if ($keywords) {   //輸出關(guān)鍵詞

echo "<meta name=\"keywords\" content=\"$keywords\" />\n";

}

}

/**

+----------------------------------------------------------

* 站點(diǎn)描述

+----------------------------------------------------------

* @return string

+----------------------------------------------------------

*/

function wp_description() {

global $s, $post;

$description = '';

$blog_name = get_bloginfo ( 'name' );

if (is_singular ()) {   //文章頁如果存在描述字段，則顯示描述，否則截取文章內(nèi)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 ()) {//首頁顯示描述設(shè)置

$description = $blog_name . "-" . get_bloginfo ( 'description' ) .'首頁要顯示的描述'; // 首頁要自己加

} elseif (is_tag ()) {//標(biāo)簽頁顯示描述設(shè)置

$description = $blog_name . "有關(guān) '" . single_tag_title ( '', false ) . "' 的文章";

} elseif (is_category ()) {//分類頁顯示描述設(shè)置

$description = $blog_name . "有關(guān) '" . single_cat_title ( '', false ) . "' 的文章";

} elseif (is_archive ()) {//文檔頁顯示描述設(shè)置

$description = $blog_name . "在: '" . trim ( wp_title ( '', false ) ) . "' 的文章";

} elseif (is_search ()) {//搜索頁顯示描述設(shè)置

$description = $blog_name . ": '" . esc_html ( $s, 1 ) . "' 的搜索結(jié)果";

} else {//默認(rèn)其他頁顯示描述設(shè)置

$description = $blog_name . "有關(guān) '" . trim ( wp_title ( '', false ) ) . "' 的文章";

}

//輸出描述

$description = mb_substr ( $description, 0, 220, 'utf-8' ) . '..';

echo "<meta name=\"description\" content=\"$description\" />\n";

}

/*自動設(shè)置第一張圖片為特色圖片，不支持外鏈圖片*/

function wp_autoset_featured_image() {

    global $post;

    if (!is_object($post)) return;

    $already_has_thumb = has_post_thumbnail($post->ID);

    if (!$already_has_thumb)   {

        $attached_image = get_children( "post_parent=$post->ID&post_type=attachment&post_mime_type=image&numberposts=1" );

        if ($attached_image) {

            foreach ($attached_image as $attachment_id => $attachment) {

                set_post_thumbnail($post->ID, $attachment_id);

            }

        }

    }

}

add_action( 'the_post', 'wp_autoset_featured_image' );

add_action( 'save_post', 'wp_autoset_featured_image' );

add_action( 'draft_to_publish', 'wp_autoset_featured_image' );

add_action( 'new_to_publish', 'wp_autoset_featured_image' );

add_action( 'pending_to_publish', 'wp_autoset_featured_image' );

add_action( 'future_to_publish', 'wp_autoset_featured_image' );