ci-tools-knowledge
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 |
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