first real comit

app/admin/libraries/classes/Controllers/LogoutController.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin\Controllers;
+
+use PhpMyAdmin\Core;
+
+class LogoutController
+{
+    public function index(): void
+    {
+        global $auth_plugin, $token_mismatch;
+
+        if ($_SERVER['REQUEST_METHOD'] !== 'POST' || $token_mismatch) {
+            Core::sendHeaderLocation('./index.php?route=/');
+
+            return;
+        }
+
+        $auth_plugin->logOut();
+    }
+}