Отделение классов от кода.

classes/Battles/Register.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Battles;
+
+use Battles\Database\Db;
+
+class Register
+{
+    public static function addUser(string $login, string $password, string $email, string $birthday): int
+    {
+        if (Db::getInstance()->execute('select count(*) from users where login = ? or email = ?', [$login, $email])->fetchColumn()) {
+            return 0;
+        }
+        Db::getInstance()->execute('insert into users (login,pass,email,borndate,ip,session_id,shadow) values (?,?,?,?,?,?,?)',
+            [$login, $password, $email, $birthday, $_SERVER['REMOTE_ADDR'], session_id(), '0.png']);
+        $userId = Db::getInstance()->lastInsertId();
+        Db::getInstance()->execute('insert into online (user_id, login_time, room, real_time) values (?,?,1,?)', [$userId, time(), time()]);
+        Db::getInstance()->execute('insert into bank (user_id) values ?', $userId);
+        return $userId;
+    }
+}