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find-null-pointer-issues

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Detects null pointer issues in PHP code. Finds property/method access on null, missing null checks, nullable returns without handling, optional chaining gaps.

skills/find-null-pointer-issues/SKILL.md

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# Null Pointer Detection

Analyze PHP code for null pointer dereference issues.

## Detection Patterns

### 1. Nullable Return Without Check

```php
// BUG: No null check after find
$user = $repository->find($id);
$user->getName(); // May be null

// BUG: Chained calls on nullable
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