Investigate new PHP 84 DOM features

[veewee]

Investigation

The General idea : create v4 of this library that requries PHP 8.4+ and make the DOM layer spec compliant + add the newly introduced features.

It won't be possible to support both v3 and v4 in your own repo's, since the type signatures will be different.
At the time of the split, both versions will be compatible with each other in functionality. v3 will not opt in to the spec, v4 will. However v4 will be the path forward: active development will happen on that branch.

Downside : this drops support for all older PHP versions which will be annoying.

Therefore : Both v3 and v4 will be LTS branches.
This will give you enough time to upgrade your own installations and usages of this package.
At the moment, there is no EOL for v3. I'll take into account the maintenance overhead until a reasable period in time.

Feature Request

Add support for new PHP 84 DOM features

Changes

✅ Spec compliance

• RFC : HTML5 separation : https://wiki.php.net/rfc/domdocument_html5_parser
• RFC : https://wiki.php.net/rfc/opt_in_dom_spec_compliance
  • [RFC] Add a way to opt-in ext/dom spec compliance php/php-src#13031
  • https://externals.io/message/122363
• RFC : DOM Additions https://wiki.php.net/rfc/dom_additions_84
  • Extra dom additions 1 nielsdos/php-src#93

✅ XLS + Xpath callbacks

• RFC : https://wiki.php.net/rfc/improve_callbacks_dom_and_xsl

✅ XMLReader writer streams

• RFC : https://wiki.php.net/rfc/xmlreader_writer_streams

Build beta PHP locally

./buildconf --force
make clean
git clean -fdx Zend/zend_language_*
./configure --without-iconv --enable-mbstring --disable-opcache --with-xsl --with-zlib --with-openssl --prefix=$HOME/php/build
make -j4
make install
$HOME/php/build/bin/php -v

Adding pcov:

git clone https://github.com/krakjoe/pcov.git
cd pcov
$HOME/php/build/bin/phpize
./configure --prefix=$HOME/php/build --with-php-config=$HOME/php/build/bin/php-config --enable-pcov
make
make install

[veewee]

@Sammyjo20

This is gonna be a quite breaking change that bumps the php dependency directly to php 8.4 for V4 of this package. The idea is to maintain 3.x for a longer time as well so you're not forced to upgrade.

How would you see adoption in xml-wrangler?

(You can already play around with it on the v4.x branch or I could tag a beta if you like )