GSoC 2026 Week 12: PHPStan Level 6 Progress and Error Cleanup

This week, I moved on to PHPStan Level 6 and started reducing the remaining issues in the baseline. I have completed 30 percent of the Level 6 PHPStan issues so far.

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1. Level 6 Error Summary

While working on PHPStan Level 6, I came across a total of 78 issues. Most of the issues were related to missing type information and Laravel Eloquent relationships.

35 issues - Missing generic types: Added proper type information to Eloquent relationships such as HasMany, BelongsTo, HasOne, MorphMany, and HasFactory. I picked this issues first because they were the highest volume and were easy to fix with proper type annotations.

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2. What I Resolved So Far

The main work this week was to start cleaning up the highest-volume issues first, especially the generic type annotations on Eloquent relationships and the missing iterable value types.

These are the areas that matter most right now:

• missingType.generics on model relationships and factory traits.
• missingType.iterableValue on arrays used in models, helpers, and controller methods.
• method.unresolvableReturnType where callback type information needs to be made explicit.
• missingType.parameter and missingType.return in smaller methods that still need proper signatures.

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3. Next Week Plan

Next week I will continue to work on the remaining PHPStan Level 6 issues.

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Acknowledgement

Thank you Mua Rachmann and Robby O’Connor for your continuous guidance and feedback.

Thanks for following my GSoC journey.