​​Upgrading a Project to PHP 8.0
This article is not about new features or comparative tests; first, we need to update the project to make it compatible with PHP 8.
Today, we are going to draw up a plan for the update and discuss the key potential difficulties based on the example of updating a large project from PHP 7.4 to 8.0. Most of the steps will also be helpful when planning an upgrade from earlier versions.