Куча мелочей, в том числе по #42.

classes/Battles/Check.php

@@ -0,0 +1,28 @@
+<?php
+# Date: 15.03.2021 (21:53)
+
+namespace Battles;
+
+use Battles\Database\DBPDO;
+
+class Check
+{
+    private User $user;
+    private DBPDO $db;
+
+    /**
+     * Check constructor.
+     *
+     * @param User $user
+     */
+    public function __construct(User $user, DBPDO $db)
+    {
+        $this->user = $user;
+        $this->db = $db;
+    }
+
+    public function Effects()
+    {
+        return $this->db->execute('delete from users_effects where remaining_time <= ?', strtotime('now'));
+    }
+}