<?php

/*
 * Copyright 2005 - 2023 Centreon (https://www.centreon.com/)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For more information : contact@centreon.com
 *
 */

/**
 * Smarty eval function.
 *
 * @param array $params
 * @param Smarty $smarty
 *
 * @throws SmartyException
 *
 * @return false|string|void
 */
function smarty_function_eval($params, &$smarty)
{
    if (! isset($params['var'])) {
        $smarty->trigger_error("eval: missing 'var' parameter");

        return;
    }

    if ($params['var'] === '') {
        return;
    }

    return $smarty->fetch('eval:' . $params['var']);
}
