S3 Stream Wrapper

The S3 stream wrapper lets you use s3://bucket/key paths with PHP's file functions (file_get_contents(), file_put_contents(), fopen(), is_file(), ...).

Load the plugin with 'bootstrap' => true to register it with the Aws configuration, or register it yourself:

use Aws\S3\S3Client;

$client = new S3Client(Configure::read('Aws'));
$client->registerStreamWrapperV2();

Then:

file_put_contents('s3://my-bucket/reports/today.csv', $csv);
$csv = file_get_contents('s3://my-bucket/reports/today.csv');