Reformat functions

db.php

@@ -1,10 +1,10 @@
 <?php
 function getConnection() {
-    $host = '127.0.0.1'; // Force TCP/IP, avoids socket issues
-    $port = 3306; // XAMPP default port
+    $host = 'localhost';
+    $port = 3306;
     $db   = 'ai_email';
-    $user = 'root';
-    $pass = ''; // XAMPP default has no password
+    $user = 'aimail';
+    $pass = 'Test123';
     $charset = 'utf8mb4';
 
     $dsn = "mysql:host=$host;port=$port;dbname=$db;charset=$charset";