error.php

См. документацию.

<?php
namespace Bitrix\Landing;
 
class Error
{
    protected array $errors = array();

    public function addError($code, $message= '')
    {
        $this->errors[] = new \Bitrix\Main\Error($message != '' ? $message : $code, $code);
    }

    public function copyError(\Bitrix\Landing\Error $error)
    {
        foreach ($error->getErrors() as $err)
        {
            $this->errors[] = $err;
        }
    }

    public function getFirstError(): ?\Bitrix\Main\Error
    {
        if ($this->errors)
        {
            $errors = array_values($this->errors);
            return array_shift($errors);
        }
 
        return null;
    }

    public function getErrors()
    {
        return $this->errors;
    }

    public function isEmpty()
    {
        return empty($this->errors);
    }

    public function addFromResult($result)
    {
        if (
            (
            $result instanceof \Bitrix\Main\Result ||
            $result instanceof \Bitrix\Main\Entity\AddResult ||
            $result instanceof \Bitrix\Main\Entity\UpdateResult ||
            $result instanceof \Bitrix\Main\Entity\DeleteResult
            ) && !$result->isSuccess()
        )
        {
            foreach ($result->getErrors() as $error)
            {
                $this->addError(
                    $error->getCode(),
                    $error->getMessage()
                );
            }
        }
    }
}