<?php
require_once('../config/db.php');
$student_id = $_GET['student_id'] ?? 0;

$stmt = $conn->prepare("SELECT c.id, c.course_name FROM courses c 
                        JOIN enrollments e ON c.id = e.course_id 
                        WHERE e.student_id = ? AND e.status = 'نشط'");
$stmt->execute([$student_id]);
echo json_encode($stmt->fetchAll(PDO::FETCH_ASSOC));