--- package: phpstan/phpstan source_path: .claude/skills/run-on-3v4l/SKILL.md repo: https://github.com/phpstan/phpstan --- --- name: run-on-3v4l description: Execute PHP code on 3v4l.org to test runtime behavior across multiple PHP versions. Use when you need to verify what PHP actually does with a piece of code. argument-hint: <php-code-or-file> disable-model-invocation: false --- # Run PHP code on 3v4l.org Execute PHP code on 3v4l.org to test actual runtime behavior across multiple PHP versions. This is critical — do NOT reason about what PHP would do, actually test it. The code to run: `$ARGUMENTS` ## Step 1: Research the 3v4l.org submission form Fetch the 3v4l.org homepage and examine the HTML form to understand how to submit code: ```bash curl -s https://3v4l.org/ | head -200 ``` Look for: - The form action URL and HTTP method - Required form fields (the code textarea name, any hidden fields) - How the response redirects to the result page ## Step 2: Prepare executable PHP code Take the PHP code and make it executable: - If the code defines classes/functions but doesn't call them, add test calls that exercise the interesting code paths - Add `var_dump()` or `echo` statements to show return values and types - Wrap potentially-erroring code in try/catch if needed to see the actual behavior - Make sure the code actually produces output that demonstrates the behavior ## Step 3: Submit to 3v4l.org Submit the prepared code to 3v4l.org using the form submission mechanism you discovered in Step 1. ## Step 4: Fetch results After submission, retrieve the results via the REST API: ```bash curl -s -H 'Accept: application/json' 'https://3v4l.org/<short-id>' ``` Parse the JSON to see actual PHP output across different PHP versions. ## Step 5: Present results Show: - The 3v4l.org link for the user to view in browser - A summary of the output across PHP versions - Any differences in behavior between PHP versions

package: phpstan/phpstan source_path: .claude/skills/run-on-3v4l/SKILL.md repo: https://github.com/phpstan/phpstan

name: run-on-3v4l description: Execute PHP code on 3v4l.org to test runtime behavior across multiple PHP versions. Use when you need to verify what PHP actually does with a piece of code. argument-hint: disable-model-invocation: false

Run PHP code on 3v4l.org

Execute PHP code on 3v4l.org to test actual runtime behavior across multiple PHP versions. This is critical — do NOT reason about what PHP would do, actually test it.

The code to run: $ARGUMENTS

Step 1: Research the 3v4l.org submission form

Fetch the 3v4l.org homepage and examine the HTML form to understand how to submit code:

curl -s https://3v4l.org/ | head -200

Look for:

The form action URL and HTTP method
Required form fields (the code textarea name, any hidden fields)
How the response redirects to the result page

Step 2: Prepare executable PHP code

Take the PHP code and make it executable:

If the code defines classes/functions but doesn't call them, add test calls that exercise the interesting code paths
Add var_dump() or echo statements to show return values and types
Wrap potentially-erroring code in try/catch if needed to see the actual behavior
Make sure the code actually produces output that demonstrates the behavior

Step 3: Submit to 3v4l.org

Submit the prepared code to 3v4l.org using the form submission mechanism you discovered in Step 1.

Step 4: Fetch results

After submission, retrieve the results via the REST API:

curl -s -H 'Accept: application/json' 'https://3v4l.org/<short-id>'

Parse the JSON to see actual PHP output across different PHP versions.

Step 5: Present results

Show:

The 3v4l.org link for the user to view in browser
A summary of the output across PHP versions
Any differences in behavior between PHP versions