Tips

Upgrading from 2.x to 3.x

Use all commands in the documented order

Upgrading 3.x to 3.y

Mainly run "skeleton" task using -o (overwrite) if you have version control, as this will outline any updates you want to put into your application. Don't forget to sync files like app.php which are not necessarily under version control.

Apply rector set cakephp

Upgrading to 4.x

Apply first everything up to latest 3.x upgrade. Then jump over to 4.x.

• Apply rector set cakephp
• Rector phpunit8 etc can already also be quite helpful
• See how manual commands via sed tool etc can also be quite powerful for upgrading
• ... add yours!

You want to help?

You can check awesome list and which ones can still be upgraded.