Playground/Demo page

[kkmuffme]

Is your feature request related to a problem?

Describe the solution you'd like

It would be quite useful if phpcs had a playground/demo page like other tools e.g.

• https://psalm.dev/
• https://www.typescriptlang.org/play/
• https://eslint.org/play/

Main benefits are

1. when people report issues that are rule related, they can reproduce the issue in the playground (optionally: ask for it with a github bot, like it's done for psalm issues) ensuring the issue is reproducible.
   This reduces the number of issues created that are caused by other things in a users config and reduces phpcs' maintainers workload

2. allow users to easily test/check a specific rule/ruleset they might not have installed locally (like the tsc demo basically)

Additional context (optional)

psalm's demo page source code is available here https://github.com/psalm/psalm.dev and possibly act as a template for the demo to make implementation simple and fast

• I have read the Contribution Guidelines and this is not a support question.
• I intend to create a pull request to implement this feature.

[jrfnl]

It's open source. Anyone can build something like that. If it would turn out to be useful, we may consider hosting it on a webdomain within this organisation.

At this time, it's not something I want to invest time in.

[jrfnl]

Oh and just to clarify: I think it's a good idea and have thought about this myself before too. However, as the project doesn't even have a website at this time, not even a searchable sniff list, it's not the first priority.

If someone is interested in working on this, it would be welcome. I'd recommend for whoever does so to have a good think about how to handle configurable sniff properties and the fixer functionality before commencing though.