User restore session

excel_horario.php

@@ -1,12 +1,6 @@
 <?php
 require_once 'class/c_login.php';
-if (!isset($_SESSION['user'])) {
-    header('Location: index.php');
-    exit;
-} else
-    $user = unserialize($_SESSION['user']);
-
-
+$user = Login::get_user();
 $user->access('excel_horario');
 
 if (in_array($user->acceso, ['r', 'n'])) {