placement.php

<?php
namespace Bitrix\Landing;
 
class Placement extends \Bitrix\Landing\Internals\BaseTable
{
    public static $internalClass = 'PlacementTable';
 
    public static function deleteByAppId($id)
    {
        $res = self::getList(array(
            'select' => array(
                'ID'
            ),
            'filter' => array(
                '=APP_ID' => $id
            )
        ));
        while ($row = $res->fetch())
        {
            self::delete($row['ID']);
        }
    }
}