It’s already been 3 years

If you’re reading this, it’s likely that you’ve seen the notice in WPEngine that PHP8.0 will be EOL soon and you’ll need to upgrade to PHP8.2 (Not sure why they skipped 8.1) or the Google gods blessed us with your presence.

Over the last few years we’ve upgraded a few legacy PHP application to be built with newer standards, PHP versions and libraries including moving over to dependency injection (DI). I’ll discuss why I think DI is one of the most important parts of modernising a legacy application.