Rank Math 的 meta description 會被紀錄在 rank_math_description meta 中。以下是從文章內取得 200 字更新該 meta 的程式語法。
function digitspark_get_excerpt_from_content($post, $length = 55) {
if (is_int($post)) {
$post_content = get_the_content(null, false, $post);
} else {
$post_content = $post->content;
}
$text = strip_shortcodes( $post_content );
$text = apply_filters( 'the_content', $text );
$text = str_replace(']]>', ']]>', $text);
$excerpt_length = apply_filters( 'excerpt_length', $length );
$excerpt_more = apply_filters( 'excerpt_more', '' );
$text = wp_trim_words( $text, $excerpt_length, $excerpt_more );
return $text;
}
$args = array(
'post_type' => 'post',
'posts_per_page' => -1,
'fields' => 'ids'
);
$posts = get_posts($args);
foreach ($posts as $post) {
$text = digitspark_get_excerpt_from_content($post, 200);
$last_period = mb_strrpos($substring, ".");
if ($last_period !== false) {
$summary = mb_substr($substring, 0, $last_period + 1);
} else {
$summary = $substring;
}
update_post_met
