How to upgrade phpunit to new version?

Question

Current, I installed phpunit. i use OS win 10. I think i installed new version from https://phpunit.de/ (current version 5.6, beta 5.7). But when check version with command

Answer 1

There are two different things update and upgrade. If you type

phpunit

it will show you all commands available. If you see in the end it shows

--self-update       Update PHPUnit to the latest version within the same
                    release series.

--self-upgrade      Upgrade PHPUnit to the latest version.

Try what you need.