paad/action/action_facultades_update.php

<?php
$ruta = "../";
require_once "../class/c_login.php";

// check if the session is started
if (!isset($_SESSION['user']))
    die(json_encode(['error' => 'No se ha iniciado sesión']));

$user = unserialize($_SESSION['user']);
$ruta = "../";
require_once "../include/bd_pdo.php";
global $pdo;
$sql = "SELECT fu_updatefacultad(:nombre, :activa, :id)";
$params = [':nombre' => mb_strtoupper($_POST['nombre']), ':activa' => $_POST['estado'], ':id' => $_POST['id']];
query($sql, $params, false);
header("Location: ../facultades.php");
exit();