5570*5571* @since 4.2.05572*5573* @param int|null$post_id The post_id(if any) found by the function.5574* @param string$url The URL being looked up.5575*/5576return(int)apply_filters('attachment_url_to_postid',$post_id,$url);5577}55785579/**5580* Returns the URLs forCSS files used in an iframe-sandbox'd TinyMCE media view.5581*5582* @since 4.0.0
History
Introduced in 4.2.0. Unchanged from 6.7.7 through 7.1.0.