embed_thumbnail_id │ filter-hook │ WP 4.9.0

Filters the thumbnail image ID for use in the embed template.

Usage

add_filter( 'embed_thumbnail_id', 'wp_kama_embed_thumbnail_id_filter' );

/**
 * Function for `embed_thumbnail_id` filter-hook.
 * 
 * @param int|false $thumbnail_id Attachment ID, or false if there is none.
 *
 * @return int|false
 */
function wp_kama_embed_thumbnail_id_filter( $thumbnail_id ){

	// filter...
	return $thumbnail_id;
}

$thumbnail_id(int|false)

Attachment ID, or false if there is none.

Changelog

Where the hook is called

$thumbnail_id = apply_filters( 'embed_thumbnail_id', $thumbnail_id );

Where the hook is used in WordPress