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 CIdValidator extends CValidator {

​

    /**

     * Value to determine whether to allow empty values

     *

     * @var bool

     */

    public $empty = false;

​

    /**

     * Error message if the id has wrong type or id is out of range or invalid

     *

     * @var string

     */

    public $messageInvalid;

​

    /**

     * Error message if the id is empty

     *

     * @var string

     */

    public $messageEmpty;

​

    /**

     * Validates ID value

     *

     * @param string $value

     *

     * @return bool

     */

    public function validate($value) {

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

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

​

            return false;

        }

​

        if (!$this->empty && (string) $value === '0') {

            $this->error($this->messageEmpty);

​

            return false;

        }

​

        $regex = $this->empty ? '/^(0|(?!0)[0-9]+)$/' : '/^(?!0)\d+$/';

​

        if (!preg_match($regex, $value) ||

            bccomp($value, 0)  == -1 ||

            bccomp($value, ZBX_DB_MAX_ID) == 1

        ) {

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

​

            return false;

        }

​

        return true;

    }

}