openstamanager/modules/newsletter/validation.php

<?php
/*
 * OpenSTAManager: il software gestionale open source per l'assistenza tecnica e la fatturazione
 * Copyright (C) DevCode s.r.l.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <https://www.gnu.org/licenses/>.
 */

include_once __DIR__.'/../../core.php';

$name = filter('name');
$value = filter('value');

switch ($name) {
    case 'email':
        $check = Validate::isValidEmail($value);

        if (empty($check['valid-format'])) {
            $result = false;
            $errors[] = tr("L'email inserita non possiede un formato valido");
        } else {
            $result = true;
        }

        if (isset($check['smtp-check']) && empty($check['smtp-check'])) {
            $result = false;
            $errors[] = tr("Impossibile verificare l'origine dell'email");
        }

        if (!empty($errors)) {
            $message = tr('Attenzione').':<ul>';
            foreach ($errors as $error) {
                $message .= '<li>'.$error.'</li>';
            }
            $message .= '</ul>';
        }

        $response = [
            'result' => $result,
            'message' => $message,
        ];

        break;
}