include_once "messages.php"; include_once "funciones.php"; session_start(); if (isset($_POST["opt"])) { $bk = new books(); $response = new StdClass(); $mes = new messages(); $fun = new funciones(); switch ($_POST["opt"]) { case 'add': $title = $_POST["title"]; $isbn = $_POST["isbn"]; $autor = $_POST["autor"]; $genre = $_POST["genre"]; $release = $_POST["release"]; $res = $bk->add($title, $isbn, $autor, $genre, $release); if ($res) { $response->res = true; $response->mes = $mes->get_msg("e004"); } else { $response->res = false; $response->mes = $mes->get_msg("e003"); } break; case 'list': $res = $bk->display_list(); if ($res) { $response->res = true; $response->mes = $res; } else { $response->res = false;