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 CLimitedSetValidator extends CValidator {

​

    /**

     * Allowed values.

     *

     * @var array

     */

    public $values = [];

​

    /**

     * Error message if the value is invalid or is not of an acceptable type.

     *

     * @var string

     */

    public $messageInvalid = null;

​

    /**

     * Checks if the given value belongs to some set.

     *

     * @param $value

     *

     * @return bool

     */

    public function validate($value) {

        if (!is_string($value) && !is_int($value)) {

            if ($this->messageInvalid !== null) {

                $this->error($this->messageInvalid, $this->stringify($value));

            }

​

            return false;

        }

​

        $values = array_flip($this->values);

​

        if (!isset($values[$value])) {

            if ($this->messageInvalid !== null) {

                $this->error($this->messageInvalid, $value);

            }

​

            return false;

        }

​

        return true;

    }

​

}