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Php modernization

Skill netresearch/php-modernization-skill/skills/php-modernization

Use when modernizing PHP code: PHP 8.1-8.5 features, PSR/PHP-FIG/PER-CS compliance, PHPStan/Rector/PHP-CS-Fixer/PHPat tooling, DTOs/enums/readonly/property hooks, type safety. Triggers: PHP modernization, type safety, PHPStan, Rector, PHP-CS-Fixer, enum, DTO, readonly, strict_types, property hooks, PHP 8.4, PHP 8.5.From its SKILL.md

Install
npx -y skills add netresearch/php-modernization-skill --skill php-modernization

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The file declares its own license as (MIT AND CC-BY-SA-4.0). That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

4.0 KB, 931 tokens by cl100k_base, as published. Nobody here has run it

PHP Modernization

Agent contract

  1. Discover: uv run ${CLAUDE_SKILL_DIR}/scripts/introspect.py (cheap), or verify_php_project.py --summary (full, with agent_actions[]).
  2. Drill: ... --check PM-XX per finding. Full output when triaging >3.
  3. Apply: uv run ${CLAUDE_SKILL_DIR}/scripts/modernize_loop.py --mode dry-run. Review transcript before applying.
  4. References: load on demand; do not pre-load.

Reference routing

NeedRead
PHP 8.0-8.3 baselinereferences/php8-features.md
PHP 8.4references/php-8.4.md
PHP 8.5references/php-8.5.md
PSR / PER-CSreferences/psr-per-compliance.md
PHPStan configreferences/phpstan-compliance.md
Static analysisreferences/static-analysis-tools.md
PHP-CS-Fixer deprecationsreferences/php-cs-fixer-deprecations.md
DTOs / VOs / inputsreferences/type-safety.md, references/request-dtos.md
Adapter / registryreferences/adapter-registry-pattern.md
Multi-version compatreferences/multi-version-adapters.md
Symfony patternsreferences/symfony-patterns.md
PSR-15 middlewarereferences/psr15-middleware-architecture.md
Doctrine edgesreferences/doctrine-modernization-edges.md
API Platformreferences/api-platform-edges.md
Immutabilityreferences/immutability-boundaries.md
Contracts & invariantsreferences/contracts-and-invariants.md
Mutation testingreferences/mutation-testing.md
Migration planningreferences/migration-strategies.md
PHPUnit 12→13, mock vs stubreferences/phpunit-modernization.md
Multi-agent dispatch hazardsreferences/multi-agent-pitfalls.md

Hard guardrails

  • Never apply readonly to Doctrine entities or mapped-superclasses (embeddables: see references/doctrine-modernization-edges.md).
  • Never run Rector without --dry-run. Invoke vendor/bin/rector directly — composer script aliases can drop ---forwarded flags depending on configuration.
  • Never raise PHPStan level without regenerating + committing the baseline. Shrink, never delete.
  • Never apply blanket final to mock targets or extension points without confirmation.
  • Never edit @generated files or files under var/cache/, vendor/, node_modules/, .Build/.
  • Never git checkout -- files outside your scope in shared trees — use git stash / git diff.
  • Never trust a warm PHPStan cache after vendor change: rm -rf /tmp/phpstan-* var/cache/phpstan first.
  • Never mass-substitute createMock → createStub — promote to expects(...)->method(...)->with(...).

Migration checklist

  • declare(strict_types=1) everywhere
  • @PER-CS, no deprecated aliases
  • PHPStan ≥9 (treatPhpDocTypesAsCertain: false); 10 for new
  • PHPat for layer boundaries
  • Return + parameter types on all methods
  • DTOs over arrays; backed enums over constants
  • PSR interfaces in type-hints
  • #[Override] (8.3+), #[SensitiveParameter] (8.2+), typed constants (8.3+)
  • readonly on DTOs/VOs/events only
  • Property hooks (8.4); array_find/any/all (8.4); pipe |> (8.5)
  • PHPUnit 12+: stubs use createStub, mocks createMock + expects (no self::any() in 13)
  • Rector withComposerBased(symfony: true) (per-version SymfonySetList::SYMFONY_* are @deprecated)

What ships with it: 31 files

374.3 KB alongside SKILL.md, 5 of them executable

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