The package provides a factory to help forming file download PSR-7 response.

• PHP 8.1 or higher.

The package could be installed with composer:

composer require yiisoft/response-download

Use the factory to form a response:

use \Psr\Http\Message\ResponseInterface;
use \Yiisoft\ResponseDownload\DownloadResponseFactory;

final class MyController
{
    public function __construct(
        private readonly DownloadResponseFactory $downloadResponseFactory
    )
    {    
    }

    public function sendMyContentAsFile(): ResponseInterface
    {
        return $this->downloadResponseFactory->sendContentAsFile('Hello!', 'message.txt');
    }
    
    public function sendMyFile(): ResponseInterface
    {
        return $this->downloadResponseFactory->sendFile('message.txt');
    }
    
    public function xSendMyFile(): ResponseInterface
    {
        return $this->downloadResponseFactory->xSendFile('message.txt');
    }
    
    public function sendMyStreamAsFile(): ResponseInterface
    {
        $steam = new MyStream();
        
        return $this->downloadResponseFactory->sendStreamAsFile($steam, 'message.txt');
    }
}

Note the xSendFile(). It is a special method that delegates the hard work to the web server instead of serving the file using PHP.

If attachment name is not specified in sendFile() or xSendFile(), it will be taken from the name of the file served.

Each file sending method could also be provided with optional mime type and optional content disposition.

If mime type is omitted, for sendFile() and xSendFile() it will be determined based on the file content. For other methods or when unable to determine the mime type, "application/octet-stream" will be used.

Content disposition is "attachment" by default. It will trigger browser's download dialog. If you want the content of the file to be displayed inline, set it to \Yiisoft\Http\ContentDispositionHeader\ContentDispositionHeader::INLINE.

The package is tested with PHPUnit. To run tests:

./vendor/bin/phpunit

The package tests are checked with Infection mutation framework with Infection Static Analysis Plugin. To run it:

./vendor/bin/roave-infection-static-analysis-plugin

The code is statically analyzed with Psalm. To run static analysis:

./vendor/bin/psalm

Use Rector to make codebase follow some specific rules or use either newest or any specific version of PHP:

./vendor/bin/rector

Use ComposerRequireChecker to detect transitive Composer dependencies.

The Yii response-download is free software. It is released under the terms of the BSD License. Please see LICENSE for more information.

Maintained by Yii Software.