WordPress开发手册:has_post_thumbnail()

函数原型

has_post_thumbnail( int|WP_Post $post = null ): bool

函数描述

是否弃用

未弃用

函数参数

$post
int|WP_Post
Optional

Post ID or WP_Post object. Default is global $post.

Default: null

函数返回值

函数位置

函数源码

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 );
}

源码链接

WordPress
Github

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