Is the PHP Modernization skill free?

Yes. The skill itself is free from netresearch/php-modernization-skill. SkillProof publishes the install command and an independent test verdict at no cost.

What is the PHP Modernization SkillProof Score?

8.4/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 4/5.

How do I install PHP Modernization?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use PHP Modernization with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

PHP Modernization

PHP 8.1-8.5 modernization workflow with a real discovery script, checklist, and hard guardrails.

by netresearch · netresearch/php-modernization-skill

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 8.4/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 7a35df6

⚠ The author changed this skill after we tested it. The verdict below describes the version we ran on Jul 14, 2026; it's queued for a re-test.

Ran the bundled verify_php_project.py for real against the repo's own generic-composer-minimal fixture (no uv available, ran via plain python3) -- its 9 agent_actions checkpoint IDs matched the repo's own golden expected/verifier.json exactly, byte-for-byte on the substantive fields.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 7/10
Docs & honesty 4/5

What PHP Modernization does

Drives PHP codebases toward PSR/PER-CS compliance and PHP 8.1-8.5 idioms (readonly, enums, DTOs, property hooks) using a bundled Python discovery/verification script plus 18 topic-specific reference docs and explicit guardrails (never blanket-readonly Doctrine entities, always Rector --dry-run first). Triggers on PHP modernization, PHPStan/Rector/PHP-CS-Fixer work, or type-safety refactors.

How to install PHP Modernization

git clone https://github.com/netresearch/php-modernization-skill
cd php-modernization-skill
mkdir -p ~/.claude/skills
cp -r skills/php-modernization ~/.claude/skills/php-modernization

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger PHP Modernization

/php-modernization PHP 8.1-8.5 modernization workflow with a real discovery script, checklist, and hard guardrails.

It also activates on plain-language prompts like these:

Modernize this legacy PHP class to use readonly and enums
Run Rector dry-run first and clean up this PHP codebase
Convert these untyped PHP constructor properties to DTOs

Frequently asked questions

Is the PHP Modernization skill free?: Yes. The skill itself is free from netresearch/php-modernization-skill. SkillProof publishes the install command and an independent test verdict at no cost.
Does PHP Modernization work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Ran the bundled verify_php_project.py for real against the repo's own generic-composer-minimal fixture (no uv available, ran via plain python3) -- its 9 agent_actions checkpoint IDs matched the repo's own golden expected/verifier.json exactly, byte-for-byte on the substantive fields.
What is the PHP Modernization SkillProof Score?: 8.4/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 7/10, docs & honesty 4/5.
How do I install PHP Modernization?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use PHP Modernization with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.