rebuilding database line

Config.php

@@ -0,0 +1,12 @@
+<?php
+$host = "localhost";
+$user = "root";        
+$password = "";            
+$database   = "users_db"; 
+
+$conn = mysqli_connect($host, $user, $password, $database);
+
+if ($conn->connect_error) {
+    die("Koneksi gagal: " . mysqli_connect_error());
+}
+?>

koneksi.php

@@ -1,12 +0,0 @@
-<?php
-$host = "localhost";
-$user = "root";        // username DB
-$pass = "";            // password DB
-$db   = "game_db"; 
-
-$conn = mysqli_connect($host, $user, $pass, $db);
-
-if (!$conn) {
-    die("Koneksi gagal: " . mysqli_connect_error());
-}
-?>

login.php

@@ -26,6 +26,6 @@ if (!$row || !password_verify($password, $row['password'])) {
 
 // Login sukses
 $_SESSION['username'] = $row['username'];
-echo "OK";
+echo "<script>alert('Silakan login.'); window.location.href='mainboard.html';</script>";
 exit;
 ?>