User restore session

usuarios.php

@@ -1,11 +1,8 @@
 <?php
 require_once 'class/c_login.php';
 require_once 'include/bd_pdo.php';
-if (!isset($_SESSION['user'])) {
-    header('Location: index.php');
-    exit;
-} else
-    $user = unserialize($_SESSION['user']);
+$user = Login::get_user();
+
 $user->access();
 
 if ($user->acceso == null) {