PHP ~ class.upload.php upload origin image when image lower than resize x,y

$handle -> image_x = 800;
$handle -> image_y = 800;
$handle -> image_ratio = true;
$handle -> image_resize = true;
$handle -> image_ratio_no_zoom_in = true;
$handle -> image_ratio_no_zoom_out = false;

reference
http://www.verot.net/php_class_upload_docs.htm