Fix the value param of SimpleXMLElement::addAttribute()

Closes GH-7811

Use single line phpdoc in stubs where possible

Not serializable flag permeation

Declare tentative return types for ext/simplexml

Closes GH-7003

Merge branch 'PHP-8.0'

* PHP-8.0:
SimpleXMLElement::addAttribute() is a void function

SimpleXMLElement::addAttribute() is a void function

Closes GH-7033.

Merge branch 'PHP-8.0'

* Fix some nullable return types in ext/simplexml

Fix some nullable return types in ext/simplexml

Closes GH-7004

Merge branch 'PHP-8.0'

* Fix arginfo/ZPP mismatch for simplexml_import_dom

Fix arginfo/ZPP mismatch for simplexml_import_dom

Closes GH-6905

Implicitly enable function entry generation when class entry generation is enabled

Closes GH-6675

Add support for generating class entries from stubs

Closes GH-6289

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

Display string default values in stubs more uniformly

Settling on using quoted string

Fix UNKNOWN default values in various extensions

Closes GH-6075

Promote warnings to exceptions in ext/simplexml

Closes GH-6011

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

Consolidate Parameter Names For ext/simplexml

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

Make SimpleXMLElement a RecursiveIterator

Context: https://externals.io/message/108789

This essentially moves the functionality of SimpleXMLIterator into
SimpleXMLElement, and m

Make SimpleXMLElement a RecursiveIterator

Context: https://externals.io/message/108789

This essentially moves the functionality of SimpleXMLIterator into
SimpleXMLElement, and makes SimpleXMLIterator a no-op extension.

Ideally SimpleXMLElement would be an IteratorAggregate, whose
getIterator() method returns SimpleXMLIterator. However, because
SimpleXMLIterator extends SimpleXMLElement (and code depends on
this in non-trivial ways), this is not possible.

The only way to not keep SimpleXMLElement as a magic Traversable
(that implements neither Iterator nor IteratorAggregate) is to
move the SimpleXMLIterator functionality into it.

Closes GH-5234.

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Generate function entries from stubs

Converts ext/pcntl, ext/simplexml, ext/snmp, ext/soap, ext/sqlite3.
Closes GH-5421

Define Stringable with __toString():string method

Add union return types with one class

Add SimpleXML arginfo stubs