Backport libxml2 2.13.2 fixes (#14816)

Backproted from https://github.com/php/php-src/pull/14789

Fix libxml2 2.12 build due to API breaks

See https://github.com/php/php-src/actions/runs/7062192818/job/19225478601

Merge branch 'PHP-8.1' into PHP-8.2

* PHP-8.1:
Fix GH-11160: Few tests failed building with new libxml 2.11.0

Fix GH-11160: Few tests failed building with new libxml 2.11.0

It's possible to categorise the failures into 2 categories:
- Changed error message. In this case we either duplicate the

Fix GH-11160: Few tests failed building with new libxml 2.11.0

It's possible to categorise the failures into 2 categories:
- Changed error message. In this case we either duplicate the test and
modify the error message. Or if the change in error message is
small, we use the EXPECTF matchers to make the test compatible with both
old and new versions of libxml2.
- Missing warnings. This is caused by a change in libxml2 where the
parser started using SAX APIs internally [1]. In this case the
error_type passed to php_libxml_internal_error_handler() changed from
PHP_LIBXML_ERROR to PHP_LIBXML_CTX_WARNING because it internally
started to use the SAX handlers instead of the generic handlers.
However, for the SAX handlers the current input stack is empty, so
nothing is actually printed. I fixed this by falling back to a
regular warning without a filename & line number reference, which
mimicks the old behaviour. Furthermore, this change now also shows
an additional warning in a test which was previously hidden.

[1] https://gitlab.gnome.org/GNOME/libxml2/-/commit/9a82b94a94bd310db426edd453b0f38c6c8f69f5

Closes GH-11162.

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Add libxml_get_external_entity_loader()

Add libxml_get_external_entity_loader(), which returns the currently
installed external entity loader, i.e. the value which was passed to
libx

Add libxml_get_external_entity_loader()

Add libxml_get_external_entity_loader(), which returns the currently
installed external entity loader, i.e. the value which was passed to
libxml_set_external_entity_loader() or null if no loader was installed
and the default entity loader will be used.

This allows libraries to save and restore the loader, controlling entity
expansion without interfering with the rest of the application.

Add macro Z_PARAM_FUNC_OR_NULL_WITH_ZVAL(). This allows us to get the
zval for a callable parameter without duplicating callable argument
parsing.

The saved zval keeps the object needed for fcc/fci alive, simplifying
memory management.

Fixes #76763.

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Merge branch 'PHP-8.1'

* PHP-8.1:
xmlRelaxNGCleanupTypes() is deprecated as of libxml2 2.10.0

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
xmlRelaxNGCleanupTypes() is deprecated as of libxml2 2.10.0

xmlRelaxNGCleanupTypes() is deprecated as of libxml2 2.10.0

The documentation[1] suggest to call `xmlCleanupParser()` instead, but
we are not doing that for reasons[2]. Thus, we do no l

xmlRelaxNGCleanupTypes() is deprecated as of libxml2 2.10.0

The documentation[1] suggest to call `xmlCleanupParser()` instead, but
we are not doing that for reasons[2]. Thus, we do no longer call
`xmlRelaxNGCleanupTypes()` for libxml2 ≥ 2.10.0.

[1] <https://gnome.pages.gitlab.gnome.org/libxml2/devhelp/libxml2-relaxng.html#xmlRelaxNGCleanupTypes>
[2] <https://github.com/php/php-src/commit/8742276eb3905eb97a585417000c7b8df85006d4>

Closes GH-9417.

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Declare ext/libxml constants in stubs (#8721)

Optimize stripos/stristr

Closes GH-7847
Closes GH-7852

Previously stripos/stristr would lowercase both the haystack and the
needle to reuse strpos. The approach in this PR i

Optimize stripos/stristr

Closes GH-7847
Closes GH-7852

Previously stripos/stristr would lowercase both the haystack and the
needle to reuse strpos. The approach in this PR is similar to strpos.
memchr is highly optimized so we're using it to search for the first
character of the needle in the haystack. If we find it we compare the
remaining characters of the needle manually.

The new implementation seems to perform about half as well as strpos (as
two memchr calls are necessary to find the next candidate).

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Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix #79971: special character is breaking the path in xml function

Merge branch 'PHP-8.0'

* PHP-8.0:
Fix #79971: special character is breaking the path in xml function

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Fix #79971: special character is breaking the path in xml function

Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Fix #79971: special character is breaking the path in xml function

Fix #79971: special character is breaking the path in xml function

The libxml based XML functions accepting a filename actually accept
URIs with possibly percent-encoded characters. Per

Fix #79971: special character is breaking the path in xml function

The libxml based XML functions accepting a filename actually accept
URIs with possibly percent-encoded characters. Percent-encoded NUL
bytes lead to truncation, like non-encoded NUL bytes would. We catch
those, and let the functions fail with a respective warning.

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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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Introduce pseudo-keyword ZEND_FALLTHROUGH

And use it instead of comments

Merge branch 'PHP-8.0'

* PHP-8.0:
Fix #73533: Invalid memory access in php_libxml_xmlCheckUTF8

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Fix #73533: Invalid memory access in php_libxml_xmlCheckUTF8

Fix #73533: Invalid memory access in php_libxml_xmlCheckUTF8

A string passed to `php_libxml_xmlCheckUTF8()` may be longer than
1<<31-1 bytes, so we're better using a `size_t`.

C

Fix #73533: Invalid memory access in php_libxml_xmlCheckUTF8

A string passed to `php_libxml_xmlCheckUTF8()` may be longer than
1<<31-1 bytes, so we're better using a `size_t`.

Closes GH-6802.

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Merge branch 'PHP-8.0'

* PHP-8.0:
Fix #51903: simplexml_load_file() doesn't use HTTP headers

Merge branch 'PHP-7.4' into PHP-8.0

* PHP-7.4:
Fix #51903: simplexml_load_file() doesn't use HTTP headers

Fix #51903: simplexml_load_file() doesn't use HTTP headers

The `encoding` attribute of the XML declaration is optional; it is good
practice to use external encoding information where ava

Fix #51903: simplexml_load_file() doesn't use HTTP headers

The `encoding` attribute of the XML declaration is optional; it is good
practice to use external encoding information where available if it is
missing. Thus, we check for `charset` info of `Content-Type` headers,
and see whether the encoding is supported.

We cater to trailing parameters and quoted-strings, but not to escaped
backslashes and quotes in quoted-strings, since no known character
encoding contains these anyway.

Co-authored-by: Michael Wallner <mike@php.net>

Closes GH-6747.

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Add support for generating class entries from stubs

Closes GH-6289

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

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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