Change XMLWriter resources to objects #4706
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While we generally prefer objects over resources for quite a while, the
procedural XMLWriter API still uses resources, although there is
already an object-oriented API which uses objects. This dichotomy
makes no sense, slightly complicates the implementation, and doesn't
allow a stepwise migration to the object-oriented API, which might be
desired. Thus we completely drop the XMLWriter resources in favor of
XMLWriter objects.
We consider the minor BC break acceptable for a major version, since
only explicit type checks (
is_resource()
,gettype()
etc.) need tobe adapted.