Zabbix

<?php

/*

 ** 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.

**/

​

​

class CArrayHelper {

​

    /**

     * @var array

     */

    protected static $fields;

​

    private function __construct() {}

​

    /**

     * Copies keys according to given map for given array of the objects.

     *

     * @param array $array

     * @param array $field_map

     *

     * @return array

     */

    public static function copyObjectsKeys(array $array, array $field_map) {

        foreach ($array as &$object) {

            foreach ($field_map as $old_key => $new_key) {

                $object[$new_key] = $object[$old_key];

            }

        }

        unset($object);

​

        return $array;

    }

​

    /**

     * Get from array only values with given keys.

     * If requested key is not in given array exception is thrown.

     *

     * @static

     * @throws InvalidArgumentException

     *

     * @param array $array

     * @param array $keys

     *

     * @return array

     */

    public static function getByKeysStrict(array $array, array $keys) {

        $result = [];