Testing read_exam_based_matrix with sample data:
Academic Year: 2025-2026 Even
Exam ID: 1
Course ID: 1
Semester: 1

Query string: academic_year=2025-2026+Even&exam_id=1&course_id=1&semester=1

Requesting URL: http://localhost/Autonomous-College/api/results/read_exam_based_matrix.php?academic_year=2025-2026+Even&exam_id=1&course_id=1&semester=1

API Response:
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API call successful!
Students found: 100
Subjects found: 32
Rows found: 0