fusercache.php

См. документацию.

<?php
 
namespace Bitrix\Sale\Discount\RuntimeCache;
 
 
use Bitrix\Main\Event;
use Bitrix\Main\EventManager;
 
final class FuserCache
{
    private $fuserIds = array();
    private static $instance;
 
    private function __construct()
    {}
 
    private function __clone()
    {}

    public static function getInstance()
    {
        if (!isset(self::$instance))
        {
            self::$instance = new static;
        }
 
        return self::$instance;
    }

    public function getUserIdById($fuserId)
    {
        if(!isset($this->fuserIds[$fuserId]))
        {
            $this->fuserIds[$fuserId] = \Bitrix\Sale\Fuser::getUserIdById($fuserId);
        }
 
        return $this->fuserIds[$fuserId];
    }

    public function clean()
    {
        $this->fuserIds = array();
    }
}