bfile.php

См. документацию.

<?php
 
namespace Bitrix\Main\Engine\Response;
 
 
use Bitrix\Main;
 
class BFile extends File
{
    protected $file;
 
    public function __construct(array $file, $name = null)
    {
        $this->file = $file;
        if ($name === null)
        {
            $name = $this->file['ORIGINAL_NAME'];
        }
 
        parent::__construct(null, $name, $this->file['CONTENT_TYPE']);
    }
 
    public static function createByFileData(array $file, $name = null)
    {
        return new self($file, $name);
    }
 
    public static function createByFileId($fileId, $name = null)
    {
        $file = \CFile::getFileArray($fileId);
        if (!$file)
        {
            throw new Main\ObjectNotFoundException("Could not find file ({$fileId})");
        }
 
        return new self($file, $name);
    }

    public function getFile()
    {
        return $this->file;
    }

    protected function prepareFile()
    {
        return $this->getFile();
    }
 
    protected function prepareOptions()
    {
        return [
            'force_download' => !$this->isShowInline(),
            'cache_time' => $this->getCacheTime(),
            'attachment_name' => $this->getName(),
            'content_type' => $this->getContentType(),
        ];
    }
}