[Docs] Document Symfony apps in Playground without WordPress

[adamziel]

What it does

Adds a Symfony-focused guide at /guides/php-frameworks showing that Playground can run a PHP framework app without downloading WordPress.

The guide embeds a runnable <php-snippet> that:

1. starts PHP with wp="none",
2. unzips the bundled Symfony Package Radar demo from the Blueprints gallery,
3. boots the Symfony kernel,
4. renders /, and
5. reads the first <h1> with Composer-bundled WP_HTML_Processor.

The expected output confirms the Symfony route rendered and WordPress was not installed:

HTTP 200
Symfony page: Symfony Playground
WordPress installed: no

Rationale

Playground is usually documented as a WordPress runtime, but its PHP/WASM runtime, filesystem, networking layer, snippets, and Blueprints can also host framework examples. Symfony is a useful proof point because the demo exercises routing, autowired services, Twig rendering, Symfony HttpClient, Composer dependencies, and the WordPress HTML API without Node.js, Sass, a database, or a local Composer install.

Implementation

• Adds /guides/php-frameworks and registers it in the Guides index/sidebar.
• Adds a symfonyBlueprint live snippet example backed by the merged WordPress/blueprints Symfony ZIP.
• Uses the bundled WordPress HTML API Composer package to parse the Symfony response without installing or booting WordPress.
• Loads the local php-code-snippet.js while running the docs site in development, so snippet UI changes can be previewed before deploy.
• Makes selected text visible inside <php-snippet> code blocks.

Testing instructions

1. Run npm run dev and npm run dev:docs.

2. Open http://127.0.0.1:3000/wordpress-playground/guides/php-frameworks.

3. Confirm the Symfony snippet loads http://127.0.0.1:5400/website-server/php-code-snippet.js in development.

4. Click Run and verify the output is:

   HTTP 200
   Symfony page: Symfony Playground
   WordPress installed: no
   

Also verified:

npx nx lint docs-site
npx nx lint playground-website

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds documentation showing that Playground can run non-WordPress PHP apps by skipping WordPress bootstrap, demonstrating the pattern with a bundled Symfony demo.

Changes:

• Added a new guide page: “Run PHP frameworks in Playground”
• Added a live <php-snippet> example that unzips and runs the Symfony Package Radar demo with wp="none"
• Registered the new guide in the Guides index and sidebar navigation

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 6 comments.

File	Description
packages/docs/site/src/components/PhpCodeSnippetLiveExample.examples.ts	Adds a new live snippet example (symfonyBlueprint) that downloads/unzips a Symfony app and runs it without WordPress
packages/docs/site/sidebars.js	Adds the new guide to the Guides sidebar
packages/docs/site/docs/main/guides/php-frameworks.md	New guide explaining non-WordPress PHP framework usage and embedding a runnable Symfony example
packages/docs/site/docs/main/guides/index.md	Adds the new guide to the Guides landing page

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