if ( $_REQUEST['short'] ) { // Short form response - attachment ID only. echo $id; } else { // Long form response - big chunk of HTML. $type = $_REQUEST['type'];
/** * Filters the returned ID of an uploaded attachment. * * The dynamic portion of the hook name, `$type`, refers to the attachment type. * * Possible hook names include: * * - `async_upload_audio` * - `async_upload_file` * - `async_upload_image` * - `async_upload_video` * * @since 2.5.0 * * @param int $id Uploaded attachment ID. */ echo apply_filters( "async_upload_{$type}", $id ); }