Merge branch 'PHP-7.3' into PHP-7.4

* PHP-7.3:
Fix #79271: DOMDocumentType::$childNodes is NULL

Fix #79271: DOMDocumentType::$childNodes is NULL

Dom level 2 core, DOM level 3 core and the DOM living standard agree
that `childNodes` always return a `NodeList`, and never `null`.

Use RETURN_THROWS() during ZPP in the date, dba and dom extensions

ext/dom: Replace usages of PHP_FUNCTION and aliases with PHP_METHOD.

Convert ext/dom to use arginfo stub.

Add missing ZPP checks

Closes GH-4878.

Small ext/dom cleanups

Remove mention of PHP major version in Copyright headers

Closes GH-4732.

Cleanup ext/dom: Additional unimplemented code following 25bfac4

Add do...while(0) for RETURN_* and ZVAL_* APIs

Closes GH-4255.

Cheaper checks for exceptions thrown from __toString()

Allow exceptions in __toString()

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

And convert some object to string conversion related recoverable
fatal errors into Error excep

Allow exceptions in __toString()

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

And convert some object to string conversion related recoverable
fatal errors into Error exceptions.

Improve exception safety of internal code performing string
conversions.

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Fix typos in code comments [skip ci]

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly

Remove local variables

This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files. All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.

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Remove yearly range from copyright notice

Use ZEND_THIS macro to hide implementation details in extensions code.

Replace zend_parse_method_parameters() by zend_parse_parameters() and avoid useless checks.

Fix typos in code comments

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
use

Remove unused Git attributes ident

The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.

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Update http to https

Use zend_string_release_ex() instread of zend_string_release() in places, where we sure about string persistence.

Use bool instead of boolean in proto

year++

Merge branch 'PHP-7.0' into PHP-7.1

Fixed bug #69373

xmlNodeSetContentLen() calls xmlFreeNode() on node->children. This
causes problems if there are other references around to those children.