PHP Backend Fix & Enhancement

The task centers on a compact PHP code-base that is already in production. I need the core logic adjusted, a single bug eliminated, and a modest new feature woven in—without disrupting the current database schema or design. All changes should be minimal, neatly commented, and easy for another developer to follow later.

Deliverables
• Updated PHP files reflecting the logic tweak
• Verified bug fix with a short note on root cause and resolution
• The added feature fully integrated and tested
• A concise change-log so I can track what was touched

The project is scoped for two to three days of work and the total compensation is fixed at $120. Please drop a brief message confirming you can start right away and that the timeline works for you.