ci-tools-knowledge

Installation
SKILL.md

PHP CI Tools Knowledge Base

Quick reference for PHP static analysis, code quality, and testing tools.

PHPStan

Levels Overview

Level Description Use Case
0 Basic checks (undefined variables, classes) Legacy projects, quick start
1 + Undefined methods, properties Minimal safety
2 + Unknown methods on $this Medium safety
3 + Return types Recommended minimum
4 + Dead code, unreachable Recommended for new projects
5 + Argument types Standard compliance
6 + Missing typehints Strict typing
7 + Union types strict High strictness
8 + No mixed, nullsafe Production recommended
Related skills
Installs
4
GitHub Stars
71
First Seen
Mar 17, 2026