Need help connecting to Amazon S3 storage

Thanks Craig, got the SDK setup.

When I'm using the upload method I'm getting memory error. Can you please point out what I'm doing wrong.

Code
$aws = service('aws')->createClient('S3',['version' => '2006-03-01']);
$aws->upload($bucketName, $uploadFileName, $file);

Error:

ErrorException #1
Allowed memory size of 134217728 bytes exhausted (tried to allocate 65015808 bytes)