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find-logic-errors

Detects logic errors in PHP code. Finds incorrect conditions, wrong operators, missing switch cases, inverted logic, short-circuit evaluation issues.

skills/find-logic-errors/SKILL.md

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# Logic Error Detection

Analyze PHP code for logic errors that cause incorrect behavior.

## Detection Patterns

### 1. Incorrect Comparison Operators

```php
// BUG: Assignment instead of comparison
if ($status = 'active') { } // Should be ===

// BUG: Wrong comparison type
if ($count == '0') { } // 0, 0.0, '', null and false all match — use === '0'