5614*5615* @since 4.2.05616*5617* @param int|null$post_id The post_id(if any) found by the function.5618* @param string$url The URL being looked up.5619*/5620return(int)apply_filters('attachment_url_to_postid',$post_id,$url);5621}56225623/**5624* Returns the URLs forCSS files used in an iframe-sandbox'd TinyMCE media view.5625*5626* @since 4.0.0
History
Introduced in 4.2.0. Unchanged from 6.7.7 through 7.1.0.