openlinecounter.php

См. документацию.

<?php
 
namespace Bitrix\Im\Update;
 
use Bitrix\Im\V2\Message\CounterService;
 
class OpenLineCounter
{
    public static function removeInvalidCounterAgent()
    {
        global $DB;
 
        $DB->Query("
            DELETE bimu FROM b_im_message_unread bimu 
            WHERE NOT EXISTS(SELECT 1 FROM b_im_relation bir WHERE bir.CHAT_ID=bimu.CHAT_ID AND bir.USER_ID=bimu.USER_ID)
            ", true);
 
        CounterService::clearCache();
 
        return '';
    }
}