<?php session_start(); if (!isset($_SESSION['username'])) { ?> <script language="JavaScript">window.open("../../index.php", "_self")</script><?php } require_once "../../modelo/columnas_extra.class.php"; $id_columna = $_POST["id_columna"]; $Columnas = new Columnas(); $delColumnas = $Columnas->del_columnaById($id_columna); if ($delColumnas) { echo "ok"; } else { echo "error"; }