paad/action/action_carreras_insert.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";
$sql = "SELECT fi_carrera(:nombre, :idfacultad, :idnivel, true, :estado)";
$params = [':nombre' => mb_strtoupper($_POST['nombre']), ':idfacultad' => $_POST['facultad'], ':idnivel' => $_POST['nivel'], ':estado' => $_POST['estado']];

print_r($_POST);
echo json_encode(query($sql, $params, true));
$user->print_to_log("Crea carrera", new: $params);
header("Location: ../carreras.php?facultad=" . $_POST['facultad']);
exit();