ext/date arguments handling

Hi list, I specifically mean to ask @derick about this issue I'm having, since he is the maintainer of ext/date. I wrote this pull request for the DateTimeZone::getOffset method to accept a DateTimeInterface instead of a DateTime object: https://github.com/php/php-src/pull/831 Instead of using ZEND_ARG_INFO, I use ZEND_ARG_OBJ_INFO rather than relying on zpp only. It makes the code consistent with the type hinting errors that should arise, and also gives a correct reflection. However, the rest of the code in this extension uses ZEND_ARG_INFO, only throwing warnings when the arguments are not of the right kind. Should I use ZEND_ARG_INFO and rely on zpp's warning, or should I use ZEND_ARG_OBJ_INFO, and eventually translate the other methods to use it too? This'd be out of this PR of course, but it makes sense to streamline the methods of ext/date. In my opinion, using ZEND_ARG_OBJ_INFO means that we're going to the right direction: fixing the type hints and the reflection of the classes. The PR could be backported to 5.* by using ZEND_ARG_INFO to avoid BC breaks. Regards, *Florian Margaine*