WordPress 常用函数 / update_post_thumbnail_cache
更新当前循环的文章缩略图缓存
update_post_thumbnail_cache( WP_Query $wp_query = null )
update_post_thumbnail_cache( WP_Query $wp_query = null )$wp_query
(WP_Query) (Optional) WP_Query 实例，默认则为全局变量 $wp_query
Default: null
无
Since 3.2
wp-includes/post-thumbnail-template.php
