Zabbix

<?php

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

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.

     *

     * @throws InvalidArgumentException

     *

     * @param array $array

     * @param array $keys

     *

     * @return array

     */

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

        $result = [];

        foreach ($keys as $key) {

            if (!isset($array[$key])) {

                throw new InvalidArgumentException(sprintf('Array does not have element with key "%1$s".', $key));

            }

            $result[$key] = $array[$key];

        }