php-modernization

How to use

Copy the installation command and review the source package before installing it in your own agent environment.
Check the source document for required tools, credentials and supported hosts.
Describe your input and desired deliverable; review the output against the source material.

npx skills add https://github.com/netresearch/php-modernization-skill --skill php-modernization

Installation does not include a model subscription, API allowance or permission to access your files.
Repository stars and installation counts describe activity, not an independent quality or security test.

Original skill document

Rendered from the source repository. Headings, examples, code, tables, links, and referenced images are preserved.

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

Need	Read
PHP 8.0-8.3 baseline	`references/php8-features.md`
PHP 8.4	`references/php-8.4.md`
PHP 8.5	`references/php-8.5.md`
PSR / PER-CS	`references/psr-per-compliance.md`
PHPStan config	`references/phpstan-compliance.md`
Static analysis	`references/static-analysis-tools.md`
PHP-CS-Fixer deprecations	`references/php-cs-fixer-deprecations.md`
DTOs / VOs / inputs	`references/type-safety.md`, `references/request-dtos.md`
Adapter / registry	`references/adapter-registry-pattern.md`
Multi-version compat	`references/multi-version-adapters.md`, `references/composer-package-metadata.md`
Symfony patterns	`references/symfony-patterns.md`
PSR-15 middleware	`references/psr15-middleware-architecture.md`
Doctrine edges	`references/doctrine-modernization-edges.md`
API Platform	`references/api-platform-edges.md`
Immutability	`references/immutability-boundaries.md`
Contracts & invariants	`references/contracts-and-invariants.md`
Mutation testing	`references/mutation-testing.md`
Lexing PHP as tokens, across versions	`references/lexing-php-across-versions.md`
Migration planning	`references/migration-strategies.md`
Public API inventory vs consumers	`references/public-api-inventory.md`
PHPUnit 12→13, mock vs stub	`references/phpunit-modernization.md`
Multi-agent dispatch hazards	`references/multi-agent-pitfalls.md`
Reading a PHP config file without running it	`references/reading-php-config-safely.md`

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(...).

[ ] 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)