7092*7093* @since 2.1.07094*7095* @param string$thumbnail_urlURLfor the attachment thumbnail.7096* @param int$post_id Attachment ID.7097*/7098returnapply_filters('wp_get_attachment_thumb_url',$thumbnail_url,$post_id);7099}71007101/**7102* Verifies an attachment is of a given type.7103*7104* @since 4.2.0
History
Introduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.