Zabbix

<?php declare(strict_types = 1);

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** 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 2 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, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

​

/**

 * A class for manage values cached in "tmp" file.

 */

class CDataCacheHelper {

​

    /**

     * Cache buffer.

     *

     * @var array

     */

    protected static $data = null;

​

    /**

     * File name to store cache.

     *

     * @var string

     */

    protected const DATA_CACHE_FILE_NAME = 'zbx_config_cache';

​

    /**

     * Save value in cache.

     *

     * @param array $values  Array of key-value pairs to store in cache.

     */

    public static function setValueArray(array $values): void {

        if (self::$data === null) {

            self::loadCache();

        }

​

        foreach ($values as $key => $value) {

            self::$data[$key] = $value;

        }

​

        self::saveCache();

    }

​

    /**

     * Get cached value by particular key.

     *

     * @param string $key    Key of requested value.

     * @param type $default  (optional) Default value.

     *