PHP 8 Compatibility

Overview

To ensure that our journey to PHP 8 compatibility is visible and transparent, we are launching the Magneto PHP 8 Compatibility Community Project!

The mainline for the project is php8-develop branch that should be available for all affected Magento repositories.

• Target branch php8-develop
• Project label Project: PHP8
• Backlog is available on PHP 8 Compatibility backlog project board
• Pull requests can be viewed on PHP 8 Compatibility PRs project board
• Project slack channel: #php8

Dependency versions updated in php8-develop branch

Dependency	2.4-develop version	php8-develop version	Pull request
wikimedia/lessphp	1.8.2	v3.1.0	https://github.com/magento/magento2/pull/31579
phpstan/phpstan	0.12.23	0.12.69	https://github.com/magento/magento2/pull/30581

Backward incompatible changes list

Description	Dependency	Pull request
Magento\Email\Model\Template\Filter constructor parameters changed	pelago/emogrifier	https://github.com/magento/magento2/pull/31772
Magento\Email\Model\Template\Filter::getCssFilesContent function throws exception instead of returning exception message in the content	pelago/emogrifier	https://github.com/magento/magento2/pull/31772
Magento\Email\Model\Template\Filter::$emogrifier protected property has been removed	pelago/emogrifier	https://github.com/magento/magento2/pull/31772