WordPress Code Reference

has_post_thumbnail

Summery Summery

Filters whether a post has a post thumbnail.

apply_filters( 'has_post_thumbnail', bool $has_thumbnail, int|WP_Post|null $post, int|string $thumbnail_id )

$has_thumbnail: (bool) true if the post has a post thumbnail, otherwise false.
$post: (int|WP_Post|null) Post ID or WP_Post object. Default is global $post.
$thumbnail_id: (int|string) Post thumbnail ID or empty string.

Changelog
Version	Description
5.1.0	Introduced.