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/>.

**/

​

​

/**

 * A class to perform operations with conditions.

 */

class CConditionHelper {

​

    /**

     * Get formula with condition IDs of the given conditions using the given evaluation method and field to group

     * conditions by.

     *

     * Supported $evalType values:

     * - CONDITION_EVAL_TYPE_AND_OR

     * - CONDITION_EVAL_TYPE_AND

     * - CONDITION_EVAL_TYPE_OR

     *

     * Example:

     * echo CConditionHelper::getFormula(array(

     *     1 => ['type' => '1'],

     *     2 => ['type' => '1'],

     *     5 => ['type' => '2']

     * ), CONDITION_EVAL_TYPE_AND_OR);

     *

     * // ({1} or {2}) and {5}

     *

     * Keep in sync with JS getConditionFormula().

     *

     * @param array  $conditions

     * @param string $group_field_name

     * @param int    $evalType

     *

     * @return string

     */

    public static function getEvalFormula(array $conditions, string $group_field_name, int $evalType): string {

        $groupedConditions = [];

        foreach ($conditions as $conditionid => $condition) {

            $groupedConditions[$condition[$group_field_name]][] = '{'.$conditionid.'}';

        }

​

        // operators

        switch ($evalType) {

            case CONDITION_EVAL_TYPE_AND:

                $conditionOperator = 'and';

                $groupOperator = $conditionOperator;

                break;

            case CONDITION_EVAL_TYPE_OR:

                $conditionOperator = 'or';

                $groupOperator = $conditionOperator;

                break;