relationtype.php

См. документацию.

<?php
namespace Bitrix\Sale\Rest\Entity;
 
use Bitrix\Main\Localization\Loc;
 
class RelationType
{
    const UNDEFINED = 0;
    const PAYSYSTEM = 1;
    const DELIVERY = 2;
 
    const PAYSYSTEM_NAME = 'P';
    const DELIVERY_NAME = 'D';
 
    static private $descriptions = [];
 
    public static function isDefined($typeID)
    {
        if(!is_numeric($typeID))
        {
            return false;
        }
 
        $typeID = intval($typeID);
        return $typeID >= self::PAYSYSTEM && $typeID <= self::DELIVERY;
    }
 
    public static function resolveName($typeID)
    {
        if(!is_numeric($typeID))
        {
            return '';
        }
 
        $typeID = intval($typeID);
        if($typeID <= 0)
        {
            return '';
        }
 
        switch($typeID)
        {
            case self::PAYSYSTEM:
                return self::PAYSYSTEM_NAME;
            case self::DELIVERY:
                return self::DELIVERY_NAME;
            case self::UNDEFINED:
            default:
                return '';
        }
    }
 
    public static function resolveID($name)
    {
        $name = mb_strtoupper(trim($name));
        if($name == '')
        {
            return self::UNDEFINED;
        }
 
        switch($name)
        {
            case self::PAYSYSTEM_NAME:
                return self::PAYSYSTEM;
            case self::DELIVERY_NAME:
                return self::DELIVERY;
            default:
                return self::UNDEFINED;
        }
    }
 
    public static function getAllDescriptions()
    {
        if(!self::$descriptions[LANGUAGE_ID])
        {
            Loc::loadMessages($_SERVER["DOCUMENT_ROOT"].'/bitrix/modules/sale/admin/order_props_edit.php');
            self::$descriptions[LANGUAGE_ID] = [
                self::PAYSYSTEM => GetMessage('SALE_PROPERTY_PAYSYSTEM'),
                self::DELIVERY => GetMessage('SALE_PROPERTY_DELIVERY'),
            ];
        }
 
        return self::$descriptions[LANGUAGE_ID];
    }
 
    public static function getDescription($typeId)
    {
        $typeId = intval($typeId);
        $all = self::getAllDescriptions();
        return isset($all[$typeId]) ? $all[$typeId] : '';
    }
}