Update PHP-Scoper to v0.16.2

Task Description

The current version of PHP-Scoper is 0.16.2.

In version 0.16.0, there were lots of improvements to the config, making it a lot simpler for us to configure PHP-Scoper in a WP plugin context.

It means we can get rid of all the manual str_replace calls in the scoper config thanks to expose-global-{constants, classes, functions} and expose-{namespaces, constants, classes, functions}

We could even automate this by setting the config based on the WP stubs, see https://github.com/humbug/php-scoper/issues/303#issuecomment-1021388471

Though we could split that up in its own ticket.

Implementation Brief

• Install latest version of PHP-Scoper via Composer
• Remove all the str_replace calls in the PHP-Scoper config
• Install sniccwp/php-scoper-wordpress-excludes as a dev dependency and configure the exclude-classes, exclude-functions, and exclude-constants options accordingly

[swissspidy]

Awesome! That definitely makes me more confident that we can use this in this project.

[calvinalkan]

@swissspidy Implemented now. We run a daily check against php-stubs/wordpress stubs and tag a new release automatically. Available at packagist now aswell.

We changed from .php to .json because with .php git would go mad on the numerically indexed array. It would show 6000 additions and deletions basically. With JSON it’s much clearer now what got updated and what got removed.