First Commit

dblocal/libraries/classes/Controllers/CollationConnectionController.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpMyAdmin\Controllers;
+
+use PhpMyAdmin\Config;
+use PhpMyAdmin\ResponseRenderer;
+use PhpMyAdmin\Template;
+use PhpMyAdmin\Url;
+
+final class CollationConnectionController extends AbstractController
+{
+    /** @var Config */
+    private $config;
+
+    public function __construct(ResponseRenderer $response, Template $template, Config $config)
+    {
+        parent::__construct($response, $template);
+        $this->config = $config;
+    }
+
+    public function __invoke(): void
+    {
+        $this->config->setUserValue(
+            null,
+            'DefaultConnectionCollation',
+            $_POST['collation_connection'],
+            'utf8mb4_unicode_ci'
+        );
+
+        $this->response->header('Location: index.php?route=/' . Url::getCommonRaw([], '&'));
+    }
+}