Thumb > foto | Как сделать загрузка файла через thumb?

if($_POST['action'] == 'avatar_upload'){
include_once ENGINE_DIR . '/classes/thumb.class.php';

		$image = $_FILES['file']['tmp_name'];
		$image_name = $_FILES['file']['name'];
		$image_size = $_FILES['file']['size'];
		$img_name_arr = explode( ".", $image_name );
		$type = end( $img_name_arr );
		$url = 'avatar_'.$userid.'.'.$type;
		$res = @move_uploaded_file( $image, ROOT_DIR . "/uploads/fotos/avatar_".$url);
		if( $res ) {
							@chmod( ROOT_DIR . "/uploads/fotos/".$url, 0666 );
							$thumb = new thumbnail( ROOT_DIR . "/uploads/fotos/".$url );
							
							$thumb->size_auto( 200 );
							$thumb->jpeg_quality( 85 );
							$thumb->save( ROOT_DIR . "/uploads/fotos/".$url );
							
							@chmod( ROOT_DIR . "/uploads/fotos/".$url, 0666 );
		
							$dle_api->change_avatart($userid,$url);	
echo('{"success":"Аватар обновлён", "avatar_url": "/uploads/fotos/'.$url.'"}');							
    }
    else exit('{"error":"Ошибка загрузки аватара!"}');
	}