Implement DOMElement::className

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

Closes GH-11691.

Implement DOMElement::getAttributeNames()

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

Avoid allocations in DOMElement::getAttribute()

Avoid string allocation in dom_get_dom1_attribute() for as long as possible

Cleanup macro usage in ext/dom and ext/libxml

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

Revert "Fix GH-11404: DOMDocument::savexml and friends ommit xmlns="" declaration for null namespace, creating incorrect xml representation of the DOM"

This reverts commit 7eb3e9cd173fbdd39e

Revert "Fix GH-11404: DOMDocument::savexml and friends ommit xmlns="" declaration for null namespace, creating incorrect xml representation of the DOM"

This reverts commit 7eb3e9cd173fbdd39eefa791aab610858e76399d.

Although the fix follows the spec, it causes issues because a lot of old
code assumes the incorrect behaviour PHP had since a long time.
We cannot do this yet, especially not in a stable release.
We revert this for the time being.
See GH-11428.

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Fix GH-11404: DOMDocument::savexml and friends ommit xmlns="" declaration for null namespace, creating incorrect xml representation of the DOM

The NULL namespace is only correct when there i

Fix GH-11404: DOMDocument::savexml and friends ommit xmlns="" declaration for null namespace, creating incorrect xml representation of the DOM

The NULL namespace is only correct when there is no default namespace
override. When there is, we need to manually set it to the empty string
namespace.

Closes GH-11428.

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Fix lifetime issue with getAttributeNodeNS()

It's the same issue that I fixed previously in GH-11402, but in a
different place.

Closes GH-11422.

Fix #70359 and #78577: segfaults with DOMNameSpaceNode

* Fix type confusion and parent reference
* Manually manage the lifetime of the parent
* Add regression tests
* Break out t

Fix #70359 and #78577: segfaults with DOMNameSpaceNode

* Fix type confusion and parent reference
* Manually manage the lifetime of the parent
* Add regression tests
* Break out to a helper, and apply the use-after-free fix to xpath

Closes GH-11402.

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Use uint32_t for the number of nodes (#11371)

Fix bug #81642: DOMChildNode::replaceWith() bug when replacing a node with itself

Closes GH-11363.

Implement iteration cache, item cache and length cache for node list iteration (#11330)

* Implement iteration cache, item cache and length cache for node list iteration

The current

Implement iteration cache, item cache and length cache for node list iteration (#11330)

* Implement iteration cache, item cache and length cache for node list iteration

The current implementation follows the spec requirement that the list
must be "live". This means that changes in the document must be
reflected in the existing node lists without requiring the user to
refetch the node list.
The consequence is that getting any item, or the length of the list,
always starts searching from the root element of the node list. This
results in O(n) time to get any item or the length. If there's a for
loop over the node list, this means the iterations will take O(n²) time
in total. This causes real-world performance issues with potential for
downtime (see GH-11308 and its references for details).

We fix this by introducing a caching strategy. We cache the last
iterated object in the iterator, the last requested item in the node
list, and the last length computation. To invalidate the cache, we
simply count the number of modifications made to the containing
document. If the modification number does not match what the number was
during caching, we know the document has been modified and the cache is
invalid. If this ever overflows, we saturate the modification number and
don't do any caching anymore. Note that we don't check for overflow on
64-bit systems because it would take hundreds of years to overflow.

Fixes GH-11308.

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Fix #81433: DOMElement::setIdAttribute() called twice may remove ID

We must only remove the attribute id, if the user requested that.

Closes GH-7482.

Fixed some spaces used instead of tabs

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as

Update http->https in license (#6945)

1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |

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Promote DOM invalid state errors during property access

Closes GH-6780

Make getElementsByTagNameNS $namespace nullable

According to the DOM specification, this argument is supposed to
be nullable.

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool

Replace zend_bool uses with bool

We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.

Of course, zend_bool is retained as an alias.

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Promote warnings to error in DOM extension

Closes GH-5418

Remove proto comments from C files

Closes GH-5758

Fix [-Wundef] warning in DOM extension

Generate method entries for ext/dom

Closes GH-5374

Do not include the same stub multiple times

Closes GH-5322

[RFC] Implement new DOM Living Standard APIs in ext/dom

Rename php_dom_create_interator() to php_dom_create_iterator()

Thus fixing an obvious typo.