Utopia Storage

Utopia Storage is a simple and lightweight library for managing application storage across multiple adapters. This library is designed to be easy to learn and use, with a consistent API regardless of the storage provider. This library is maintained by the Appwrite team.

This library is part of the Utopia Framework project.

Getting Started

Install using composer:

composer require utopia-php/storage

Basic Usage

<?php

require_once '../vendor/autoload.php';

use Utopia\Storage\Storage;
use Utopia\Storage\Device\Local;
use Utopia\Storage\Device\S3;
use Utopia\Storage\Device\DOSpaces;
use Utopia\Storage\Device\Backblaze;
use Utopia\Storage\Device\Linode;
use Utopia\Storage\Device\Wasabi;

// Set up a storage device (only need to choose one)
Storage::setDevice('files', new Local('/path/to/storage'));

// Common operations with any device
$device = Storage::getDevice('files');

// Upload a file
$device->upload('/local/path/to/file.png', 'destination/path/file.png');

// Check if file exists
$exists = $device->exists('destination/path/file.png');

// Read file contents
$contents = $device->read('destination/path/file.png');

// Delete a file
$device->delete('destination/path/file.png');

Available Adapters

Local Storage

Use the local filesystem for storing files.

use Utopia\Storage\Storage;
use Utopia\Storage\Device\Local;

// Initialize local storage
Storage::setDevice('files', new Local('/path/to/storage'));

AWS S3

Store files in Amazon S3 or compatible services.

use Utopia\Storage\Storage;
use Utopia\Storage\Device\S3;

// Initialize S3 storage
Storage::setDevice('files', new S3(
    'root', // Root path in bucket
    'YOUR_ACCESS_KEY',
    'YOUR_SECRET_KEY',
    'YOUR_BUCKET_NAME',
    S3::US_EAST_1, // Region (default: us-east-1)
    S3::ACL_PRIVATE // Access control (default: private)
));

// Available regions
// S3::US_EAST_1, S3::US_EAST_2, S3::US_WEST_1, S3::US_WEST_2, S3::AP_SOUTH_1, 
// S3::AP_NORTHEAST_1, S3::AP_NORTHEAST_2, S3::AP_NORTHEAST_3, S3::AP_SOUTHEAST_1,
// S3::AP_SOUTHEAST_2, S3::EU_CENTRAL_1, S3::EU_WEST_1, S3::EU_WEST_2, S3::EU_WEST_3,
// And more - check the S3 class for all available regions

// Available ACL options
// S3::ACL_PRIVATE, S3::ACL_PUBLIC_READ, S3::ACL_PUBLIC_READ_WRITE, S3::ACL_AUTHENTICATED_READ

DigitalOcean Spaces

Store files in DigitalOcean Spaces.

use Utopia\Storage\Storage;
use Utopia\Storage\Device\DOSpaces;

// Initialize DO Spaces storage
Storage::setDevice('files', new DOSpaces(
    'root', // Root path in bucket
    'YOUR_ACCESS_KEY',
    'YOUR_SECRET_KEY',
    'YOUR_BUCKET_NAME',
    DOSpaces::NYC3, // Region (default: nyc3)
    DOSpaces::ACL_PRIVATE // Access control (default: private)
));

// Available regions
// DOSpaces::NYC3, DOSpaces::SGP1, DOSpaces::FRA1, DOSpaces::SFO2, DOSpaces::SFO3, DOSpaces::AMS3

Backblaze B2

Store files in Backblaze B2 Cloud Storage.

use Utopia\Storage\Storage;
use Utopia\Storage\Device\Backblaze;

// Initialize Backblaze storage
Storage::setDevice('files', new Backblaze(
    'root', // Root path in bucket
    'YOUR_ACCESS_KEY',
    'YOUR_SECRET_KEY',
    'YOUR_BUCKET_NAME',
    Backblaze::US_WEST_004, // Region (default: us-west-004)
    Backblaze::ACL_PRIVATE // Access control (default: private)
));

// Available regions (clusters)
// Backblaze::US_WEST_000, Backblaze::US_WEST_001, Backblaze::US_WEST_002, 
// Backblaze::US_WEST_004, Backblaze::EU_CENTRAL_003

Linode Object Storage

Store files in Linode Object Storage.

use Utopia\Storage\Storage;
use Utopia\Storage\Device\Linode;

// Initialize Linode storage
Storage::setDevice('files', new Linode(
    'root', // Root path in bucket
    'YOUR_ACCESS_KEY',
    'YOUR_SECRET_KEY',
    'YOUR_BUCKET_NAME',
    Linode::EU_CENTRAL_1, // Region (default: eu-central-1)
    Linode::ACL_PRIVATE // Access control (default: private)
));

// Available regions
// Linode::EU_CENTRAL_1, Linode::US_SOUTHEAST_1, Linode::US_EAST_1, Linode::AP_SOUTH_1

Wasabi Cloud Storage

Store files in Wasabi Cloud Storage.

use Utopia\Storage\Storage;
use Utopia\Storage\Device\Wasabi;

// Initialize Wasabi storage
Storage::setDevice('files', new Wasabi(
    'root', // Root path in bucket
    'YOUR_ACCESS_KEY',
    'YOUR_SECRET_KEY',
    'YOUR_BUCKET_NAME',
    Wasabi::EU_CENTRAL_1, // Region (default: eu-central-1)
    Wasabi::ACL_PRIVATE // Access control (default: private)
));

// Available regions
// Wasabi::US_EAST_1, Wasabi::US_EAST_2, Wasabi::US_WEST_1, Wasabi::US_CENTRAL_1,
// Wasabi::EU_CENTRAL_1, Wasabi::EU_CENTRAL_2, Wasabi::EU_WEST_1, Wasabi::EU_WEST_2,
// Wasabi::AP_NORTHEAST_1, Wasabi::AP_NORTHEAST_2

Common Operations

All storage adapters provide a consistent API for working with files:

// Get storage device
$device = Storage::getDevice('files');

// Upload a file
$device->upload('/path/to/local/file.jpg', 'remote/path/file.jpg');

// Check if file exists
$exists = $device->exists('remote/path/file.jpg');

// Get file size
$size = $device->getFileSize('remote/path/file.jpg');

// Get file MIME type
$mime = $device->getFileMimeType('remote/path/file.jpg');

// Get file MD5 hash
$hash = $device->getFileHash('remote/path/file.jpg');

// Read file contents
$contents = $device->read('remote/path/file.jpg');

// Read partial file contents
$chunk = $device->read('remote/path/file.jpg', 0, 1024); // Read first 1KB

// Multipart/chunked uploads
$device->upload('/local/file.mp4', 'remote/video.mp4', 1, 3); // Part 1 of 3

// Create directory
$device->createDirectory('remote/new-directory');

// List files in directory
$files = $device->listFiles('remote/directory');

// Delete file
$device->delete('remote/path/file.jpg');

// Delete directory
$device->deleteDirectory('remote/directory');

// Transfer files between storage devices
$sourceDevice = Storage::getDevice('source');
$targetDevice = Storage::getDevice('target');

$sourceDevice->transfer('source/path.jpg', 'target/path.jpg', $targetDevice);

Adding New Adapters

For information on adding new storage adapters, see the Adding New Storage Adapter guide.

System Requirements

Utopia Storage requires PHP 7.4 or later. We recommend using the latest PHP version whenever possible.

Contributing

For security issues, please email [email protected] instead of posting a public issue in GitHub.

All code contributions - including those of people having commit access - must go through a pull request and be approved by a core developer before being merged. This is to ensure a proper review of all the code.

We welcome you to contribute to the Utopia Storage library. For details on how to do this, please refer to our Contributing Guide.

License

This library is available under the MIT License.

Copyright

Copyright (c) 2019-2025 Appwrite Team <[email protected]>