wpseek.com
WordPress开发者和主题制作者的搜索引擎



has_post_thumbnail › WordPress Function

Since2.9.0
已弃用n/a
› has_post_thumbnail ( $post = null )
参数:
  • (int|WP_Post) $post Optional. Post ID or WP_Post object. Default is global `$post`.
    Required: No
    默认: null
返回:
  • (bool) Whether the post has an image attached.
定义在:
文档:
Change Log:
  • 4.4.0

Determines whether a post has an image attached.

For more information on this and similar theme functions, check out the {@link Conditional Tags} article in the Theme Developer Handbook.


Related Functions: the_post_thumbnail, set_post_thumbnail, the_post_thumbnail_url, get_the_post_thumbnail, set_post_thumbnail_size

源码 

function has_post_thumbnail( $post = null ) {
	$thumbnail_id  = get_post_thumbnail_id( $post );
	$has_thumbnail = (bool) $thumbnail_id;

	/**
	 * Filters whether a post has a post thumbnail.
	 *
	 * @since 5.1.0
	 *
	 * @param bool             $has_thumbnail true if the post has a post thumbnail, otherwise false.
	 * @param int|WP_Post|null $post          Post ID or WP_Post object. Default is global `$post`.
	 * @param int|false        $thumbnail_id  Post thumbnail ID or false if the post does not exist.
	 */
	return (bool) apply_filters( 'has_post_thumbnail', $has_thumbnail, $post, $thumbnail_id );
}