Split off nodelist header components to nodelist.h

Move node list dimension handling to a separate file

Implement HTMLCollection::namedItem()

Factor out reading an attribute value

Fix GH-13863: Removal during NodeList iteration breaks loop

The list is live, so upon cache invalidation we should rewalk the tree
to sync the index again with the node list. We keep the

Fix GH-13863: Removal during NodeList iteration breaks loop

The list is live, so upon cache invalidation we should rewalk the tree
to sync the index again with the node list. We keep the legacy behaviour
for the old DOM classes.

Closes GH-13934.

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Factor out common "first container's child" code

Remove duplicated code for entity vs notation handling

Fix GH-13764: xsl cannot build on PHP 8.4 (#13770)

Move some of the DOM APIs from the non-public php_dom.h header to the
public header xml_common.h.

Change stricterror type to bool

[RFC] Add a way to opt-in ext/dom spec compliance (#13031)

RFC: https://wiki.php.net/rfc/opt_in_dom_spec_compliance

[RFC] Improve callbacks in ext/dom and ext/xsl (#12627)

Fix GH-12870: Creating an xmlns attribute results in a DOMException

There were multiple things here since forever, see the GH thread [1]
for discussion.

There were already many

Fix GH-12870: Creating an xmlns attribute results in a DOMException

There were multiple things here since forever, see the GH thread [1]
for discussion.

There were already many fixes to this function previously, and as a
consequence of one of those fixes this started throwing exceptions for a
correct use-case. It turns out that even when reverting to the previous
behaviour there are still bugs. Just fix all of them while we have the
chance.

[1] https://github.com/php/php-src/issues/12870

Closes GH-12888.

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[RFC] DOM HTML5 parsing and serialization support (#12111)

Fix cloning attribute with namespace disappearing namespace

Closes GH-12547.

Fix broken cache invalidation with deallocated and reallocated document node

The original caching implementation had an oversight in combination with
the new lifetime management in DOM f

Fix broken cache invalidation with deallocated and reallocated document node

The original caching implementation had an oversight in combination with
the new lifetime management in DOM for 8.3.
The modification counter is stored on the document object itself, but as
that can get deallocated when all references disappear, stale cache data
can be used. Normally this isn't a problem, unless getElementsByTagName is
called not on the document but on a child node. Fix it by moving caching
data into the ref object, which will outlive all nodes from a document
even if the document object disappears.

Closes GH-12338.

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Remove DOM_NO_ARGS() and DOM_NOT_IMPLEMENTED() (#12147)

DOM_NO_ARGS() has no users.
DOM_NOT_IMPLEMENTED() has a single user.

Fix various namespace prefix conflict resolution bugs and namespace shift bugs

There are two linked issues:

- Conflicts couldn't be resolved by changing the prefix name.
- Lacki

Fix various namespace prefix conflict resolution bugs and namespace shift bugs

There are two linked issues:

- Conflicts couldn't be resolved by changing the prefix name.
- Lacking a prefix would shift the namespace as the default namespace,
causing elements to suddenly become part of the namespace instead of
the attributes.

The output could still be improved by removing redundant namespace
declarations, but that's another issue. At least the output is
correct now.

Closes GH-11777.

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Fix #80927: Removing documentElement after creating attribute node: possible use-after-free

Closes GH-11892.

Implement DOMElement::insertAdjacent{Element,Text} (#11700)

* Implement DOMElement::insertAdjacent{Element,Text}

ref: https://dom.spec.whatwg.org/#dom-element-insertadjacentelement

Implement DOMElement::insertAdjacent{Element,Text} (#11700)

* Implement DOMElement::insertAdjacent{Element,Text}

ref: https://dom.spec.whatwg.org/#dom-element-insertadjacentelement
ref: https://dom.spec.whatwg.org/#dom-element-insertadjacenttext

Closes GH-11700.

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Implement DOMNode::isConnected and DOMNameSpaceNode::isConnected

ref: https://dom.spec.whatwg.org/#dom-node-isconnected

Closes GH-11677.

Implement DOMParentNode::replaceChildren()

ref: https://dom.spec.whatwg.org/#dom-parentnode-replacechildren

Refactor dom_node_node_name_read() to avoid double allocation

We will use this helper later outside of the node name read handler.

Cleanup macro usage in ext/dom and ext/libxml

With the new lifetime system in place, we can simplify some macros.

Avoid allocation when getting the node content, if possible

Closes GH-11543.

Fix #80332: Completely broken array access functionality with DOMNamedNodeMap

The problem is the usage of zval_get_long(). In particular, if the
string is non-numeric the result of zval_

Fix #80332: Completely broken array access functionality with DOMNamedNodeMap

The problem is the usage of zval_get_long(). In particular, if the
string is non-numeric the result of zval_get_long() will be 0 without
giving an error or warning. This is misleading for users: users get the
impression that they can use strings to access the map because it
coincidentally works for the first item (which is at index 0). Of
course, this fails with any other index which causes confusion and bugs.

This patch adds proper support for using string offsets while accessing
the map. It does so by detecting if it's a non-numeric string, and then
using the getNamedItem() method instead of item(). I had to split up the
array access implementation code for DOMNodeList and DOMNamedNodeMap
first to be able to do this.

Closes GH-11468.

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