admin_post_thumbnail_html filter-hook . WP 2.9.0

Filters the admin post thumbnail HTML markup to return.

Usage

add_filter( 'admin_post_thumbnail_html', 'filter_function_name_2023', 10, 3 );
function filter_function_name_2023( $content, $post_id, $thumbnail_id ){
	// filter...

	return $content;
}

$content(string)

Admin post thumbnail HTML markup.

$post_id(int)

Post ID.

$thumbnail_id(int/null)

Thumbnail attachment ID, or null if there isn't one.

Changelog

Where the hook is called

return apply_filters( 'admin_post_thumbnail_html', $content, $post->ID, $thumbnail_id );

Where the hook is used (in WP core)