update templates introduce request helper

lib/Froxlor/UI/Request.php

@@ -0,0 +1,43 @@
+<?php
+namespace Froxlor\UI;
+
+/**
+ * This file is part of the Froxlor project.
+ * Copyright (c) 2010 the Froxlor Team (see authors).
+ *
+ * For the full copyright and license information, please view the COPYING
+ * file that was distributed with this source code. You can also view the
+ * COPYING file online at http://files.froxlor.org/misc/COPYING.txt
+ *
+ * @copyright  (c) the authors
+ * @author     Froxlor team <team@froxlor.org> (2010-)
+ * @author     Maurice Preuß <hello@envoyr.com>
+ * @license    GPLv2 http://files.froxlor.org/misc/COPYING.txt
+ * @package    API
+ *
+ */
+class Request
+{
+    /**
+     * Get key from current request.
+     *
+     * @param $key
+     * @param string|null $default
+     * @return mixed|string|null
+     */
+    public static function get($key, string $default = null)
+    {
+        return $_GET[$key] ?? $_POST[$key] ?? $default;
+    }
+
+    /**
+     * Check if key is existing in current request.
+     *
+     * @param $key
+     * @return bool|mixed
+     */
+    public static function exist($key)
+    {
+        return (bool) $_GET[$key] ?? $_POST[$key] ?? false;
+    }
+}