Brent Roose has written an excellent book. This time on his programming journey and the lessons learned along the way.
It’s not too long, I personally read it in one sitting, and liked it very much.
PHP
What’s new in PHP 8.6
Brent surveys the most notable additions coming in PHP 8.6, including partial function application, the new polling API, readonly property defaults, and several smaller improvements and deprecations. Read more