Proposal: $options argument for SimpleXMLElement::asXML

Hi internals I came across https://bugs.php.net/bug.php?id=67387. Passing the option in via the constructor doesn't work because the constructor only allows parser options. We can implement support for options (such as LIBXML_NOXMLDECL, LIBXML_SAVE_NOEMPTYTAG) by adding an (optional) argument to the asXML function: ?int $options = 0. This would be a BC break, because userland classes extending from SimpleXMLElement *and* overriding asXML would have to change the signature of asXML. It's not hard at all to implement this functionality, but I want to ask first if there's any opinions on this before I write up an RFC. Thanks Niels