has_post_thumbnail – Hook | Developer.WordPress.org

apply_filters( ‘has_post_thumbnail’, bool $has_thumbnail, int|WP_Post|null $post, int|false $thumbnail_id )

Filters whether a post has a post thumbnail.

Parameters

$has_thumbnailbool: true if the post has a post thumbnail, otherwise false.
$postint|WP_Post|null: Post ID or WP_Post object. Default is global $post.
$thumbnail_idint|false: Post thumbnail ID or false if the post does not exist.

return (bool) apply_filters( 'has_post_thumbnail', $has_thumbnail, $post, $thumbnail_id );

Used by	Description
has_post_thumbnail()`wp-includes/post-thumbnail-template.php`	Determines whether a post has an image attached.

Version	Description
5.1.0	Introduced.

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