<?php
header('Content-Type: application/json; charset=utf-8');
require_once '../../bbs/db_conn.php';

// PDO 연결 생성
$pdo = db_conn();

try {
    $stmt = $pdo->query("SELECT * FROM edu_code_group ORDER BY group_code");
    $groups = $stmt->fetchAll(PDO::FETCH_ASSOC);
    echo json_encode(['groups' => $groups], JSON_UNESCAPED_UNICODE);
} catch (Exception $e) {
    echo json_encode(['error' => $e->getMessage()], JSON_UNESCAPED_UNICODE);
}
?>