An API client for S3. AsyncAws has implemented the most popular API clients. If you want to upload a 1 Gb file, you really don't want to put that file in memory before uploading. You want to do it a smarter way. AsyncAws allows you to upload files using a string, resource, closure, or an iterable.
fs3 is an Amazon S3 compatible client and server implementation enabling centralized file storage web services ideal for multi-server applications. Users can develop potential S3-based applications using only a typical Apache-PHP environment.