reconstruction of the project

app/Http/Controllers/old/TestDBController.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Controllers\View;
+
+use CodeIgniter\Controller;
+use CodeIgniter\Database\Exceptions\DatabaseException;
+
+class TestDBController extends Controller
+{
+    public function index()
+    {
+        $db = \Config\Database::connect();
+
+        try {
+            $query = $db->query('SELECT 1');
+            $result = $query->getResult();
+
+            if ($result) {
+                echo "Database connection is successful.";
+            } else {
+                echo "Database connection failed.";
+            }
+        } catch (DatabaseException $e) {
+            echo "Database connection failed: " . $e->getMessage();
+        }
+    }
+}