URI scheme to use when connecting. The SDK uses “https” endpoints (i.e., uses SSL/TLS connections) by default. You can attempt to connect to a service over an unencrypted “http” endpoint by setting
scheme to “http”.
$s3 = new Aws\S3\S3Client([ 'version' => '2006-03-01', 'region' => 'us-west-2', 'scheme' => 'http' ]);
See the AWS Regions and Endpoints for a list of endpoints and whether a service supports the