README

Unstable Branch

The main branch is not stable. Please see the releases for a stable version.

Overview

A fast and simple streaming zip file downloader for PHP. Using this library will save you from having to write the Zip to disk. You can directly send it to the user, which is much faster. It can work with S3 buckets or any PSR7 Stream.

Please see the LICENSE file for licensing and warranty information.

Installation

Simply add a dependency on maennchen/zipstream-php to your project's composer.json file if you use Composer to manage the dependencies of your project. Use following command to add the package to your project's dependencies:

composer require maennchen/zipstream-php

Usage

For detailed instructions, please check the Documentation.

// Autoload the dependencies
require 'vendor/autoload.php';

// create a new zipstream object
$zip = new ZipStream\ZipStream(
    outputName: 'example.zip',

    // enable output of HTTP headers
    sendHttpHeaders: true,
);

// create a file named 'hello.txt'
$zip->addFile(
    fileName: 'hello.txt',
    data: 'This is the contents of hello.txt',
);

// add a file named 'some_image.jpg' from a local file 'path/to/image.jpg'
$zip->addFileFromPath(
    fileName: 'some_image.jpg',
    path: 'path/to/image.jpg',
);

// finish the zip stream
$zip->finish();

Callback Output

You can stream ZIP data to a custom callback function instead of directly to the browser:

use ZipStream\ZipStream;
use ZipStream\Stream\CallbackStreamWrapper;

// Stream to a callback function with proper file handling
$outputFile = fopen('output.zip', 'wb');
$backupFile = fopen('backup.zip', 'wb');

$zip = new ZipStream(
    outputStream: CallbackStreamWrapper::open(function (string $data) use ($outputFile, $backupFile) {
        // Handle ZIP data as it's generated
        fwrite($outputFile, $data);
        
        // Send to multiple destinations efficiently
        echo $data; // Browser
        fwrite($backupFile, $data); // Backup file
    }),
    sendHttpHeaders: false,
);

$zip->addFile('hello.txt', 'Hello World!');
$zip->finish();

// Clean up resources
fclose($outputFile);
fclose($backupFile);

Questions

💬 Questions? Please Read This First!

If you have a question about using this library, please do not email the authors directly. Instead, head over to the GitHub Discussions page — your question might already be answered there! Using Discussions helps build a shared knowledge base, so others can also benefit from the answers. If you need dedicated 1:1 support, check out the options available on @maennchen's sponsorship page.

Upgrade to version 3.1.2

Minimum PHP Version: 8.2

Upgrade to version 3.0.0

General

Minimum PHP Version: 8.1
Only 64bit Architecture is supported.
The class ZipStream\Option\Method has been replaced with the enum ZipStream\CompressionMethod.
Most classes have been flagged as @internal and should not be used from the outside. If you're using internal resources to extend this library, please open an issue so that a clean interface can be added & published. The externally available classes & enums are:
- ZipStream\CompressionMethod
- ZipStream\Exception*
- ZipStream\ZipStream

Archive Options

The class ZipStream\Option\Archive has been replaced in favor of named arguments in the ZipStream\ZipStream constructor.
The archive options largeFileSize & largeFileMethod has been removed. If you want different compressionMethods based on the file size, you'll have to implement this yourself.
The archive option httpHeaderCallback changed the type from callable to Closure.
The archive option zeroHeader has been replaced with the option defaultEnableZeroHeader and can be overridden for every file. Its default value changed from false to true.
The archive option statFiles was removed since the library no longer checks filesizes this way.
The archive option deflateLevel has been replaced with the option defaultDeflateLevel and can be overridden for every file.
The first argument (name) of the ZipStream\ZipStream constructor has been replaced with the named argument outputName.
Headers are now also sent if the outputName is empty. If you do not want to automatically send http headers, set sendHttpHeaders to false.

File Options

The class ZipStream\Option\File has been replaced in favor of named arguments in the ZipStream\ZipStream->addFile* functions.
The file option method has been renamed to compressionMethod.
The file option time has been renamed to lastModificationDateTime.
The file option size has been renamed to maxSize.

Upgrade to version 2.0.0

https://github.com/maennchen/ZipStream-PHP/tree/2.0.0#upgrade-to-version-200

Upgrade to version 1.0.0

https://github.com/maennchen/ZipStream-PHP/tree/2.0.0#upgrade-to-version-100

Contributing

ZipStream-PHP is a collaborative project. Please take a look at the .github/CONTRIBUTING.md file.

Version Support

Versions are supported according to the table below.

Please do not open any pull requests contradicting the current version support status.

Careful: Always check the README on main for up-to-date information.

Version	New Features	Bugfixes	Security
3	✓	✓	✓
2	✗	✗	✓
1	✗	✗	✗
0	✗	✗	✗

This library aligns itself with the PHP core support. New features and bugfixes will only target PHP versions according to their current status.

See: https://www.php.net/supported-versions.php

About the Authors

Paul Duncan pabs@pablotron.org - https://pablotron.org/
Jonatan Männchen jonatan@maennchen.ch - https://maennchen.dev
Jesse G. Donat donatj@gmail.com - https://donatstudios.com
Nicolas CARPi nico-git@deltablot.email - https://www.deltablot.com
Nik Barham nik@brokencube.co.uk - https://www.brokencube.co.uk

maennchen / zipstream-php

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