Initial commit - TPU Survey System with Google Forms & Certificate Generator

config/database.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Database Configuration
+ * TPU Survey System
+ */
+
+define('DB_HOST', 'localhost');
+define('DB_NAME', 'tpu_survey_v2');
+define('DB_USER', 'root');
+define('DB_PASS', '');
+define('DB_CHARSET', 'utf8mb4');
+
+function getDB() {
+    static $pdo = null;
+    if ($pdo === null) {
+        try {
+            $dsn = "mysql:host=" . DB_HOST . ";dbname=" . DB_NAME . ";charset=" . DB_CHARSET;
+            $pdo = new PDO($dsn, DB_USER, DB_PASS, [
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+                PDO::ATTR_EMULATE_PREPARES => false
+            ]);
+        } catch (PDOException $e) {
+            http_response_code(500);
+            echo json_encode(['error' => 'Database connection failed: ' . $e->getMessage()]);
+            exit;
+        }
+    }
+    return $pdo;
+}
+
+function jsonResponse($data, $code = 200) {
+    http_response_code($code);
+    header('Content-Type: application/json; charset=utf-8');
+    echo json_encode($data, JSON_UNESCAPED_UNICODE);
+    exit;
+}
+
+function getInput() {
+    $json = file_get_contents('php://input');
+    return json_decode($json, true) ?: [];
+}