7093*7094* @since 2.1.07095*7096* @param string$thumbnail_urlURLfor the attachment thumbnail.7097* @param int$post_id Attachment ID.7098*/7099returnapply_filters('wp_get_attachment_thumb_url',$thumbnail_url,$post_id);7100}71017102/**7103* Verifies an attachment is of a given type.7104*7105* @since 4.2.0
History
Introduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.