Generate class entries for a few extensions

Relates to GH-6644

Add support for generating class entries from stubs

Closes GH-6289

Co-authored-by: Nikita Popov <nikita.ppv@gmail.com>

Add support for generating methodsynopses from stubs

Closes GH-6367

Fix bug #80537

This is an unavoidable breaking change to both the type and
parameter name.

The assertion that was supposed to prevent this was overly lax
and accepted any ob

Fix bug #80537

This is an unavoidable breaking change to both the type and
parameter name.

The assertion that was supposed to prevent this was overly lax
and accepted any object type for string parameters.

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Promote warnings to error in DOM extension

Closes GH-5418

Display types in stubs more uniformly

In preparation for generating method signatures for the manual.

This change gets rid of bogus false|null return types, a few unnecessary traili

Display types in stubs more uniformly

In preparation for generating method signatures for the manual.

This change gets rid of bogus false|null return types, a few unnecessary trailing backslashes, and settles on using ? when possible for nullable types.

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Add all the missing parameter types to stubs

Closes GH-5955

Consolidate Parameter Names For ext/dom

Co-authored-by: Thomas Weinert <thomas@weinert.info>

Remove spurious return true from DOMXPath::registerPhpFunctions()

Only one of three identical cases returned true, and the function
is documented to return void. Remove the outlier.

Use string|array type in DOMXPath::registerPhpFunctions()

Introduce InternalIterator

Userland classes that implement Traversable must do so either
through Iterator or IteratorAggregate. The same requirement does
not exist for internal class

Introduce InternalIterator

Userland classes that implement Traversable must do so either
through Iterator or IteratorAggregate. The same requirement does
not exist for internal classes: They can implement the internal
get_iterator mechanism, without exposing either the Iterator or
IteratorAggregate APIs. This makes them usable in get_iterator(),
but incompatible with any Iterator based APIs.

A lot of internal classes do this, because exposing the userland
APIs is simply a lot of work. This patch alleviates this issue by
providing a generic InternalIterator class, which acts as an
adapater between get_iterator and Iterator, and can be easily
used by many internal classes. At the same time, we extend the
requirement that Traversable implies Iterator or IteratorAggregate
to internal classes as well.

Closes GH-5216.

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Fix [-Wundef] warning in DOM extension

Fix UNKNOWN default values in various extensions

Closes GH-5514

Generate method entries for ext/dom

Closes GH-5374