acc-bug-fix-knowledge
Bug Fix Knowledge Base
Comprehensive knowledge for diagnosing and fixing bugs in PHP applications following DDD, CQRS, and Clean Architecture patterns.
Bug Categories and Symptoms
1. Logic Errors
Symptoms:
- Incorrect output for valid input
- Wrong branch taken in conditionals
- Inverted boolean logic
- Off-by-one errors in loops
- Missing edge case handling
Common Causes:
>instead of>=,&&instead of||- Negation errors (
!$conditionvs$condition) - Loop boundary mistakes (
< countvs<= count) - Missing
breakin switch statements
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