Installer/behat/testScreenshot/example.php

<?php

// Include the SDK using the Composer autoloader
date_default_timezone_set('America/Argentina/Buenos_Aires');
require 'vendor/autoload.php';

$s3 = new Aws\S3\S3Client([
        'version' => 'latest',
        'region'  => 'sa-east-1',
        'endpoint' => 'https://s3.infra.flowdat.com/minio/login',
        'use_path_style_endpoint' => true,
        'credentials' => [
                'key'    => 'iksop',
                'secret' => '8htoiwn44g204th',
            ],
]);

// Send a PutObject request and get the result object.
$insert = $s3->putObject([
     'Bucket' => 'testbucket',
     'Key'    => 'testFer',
     'Body'   => 'Hello Fer!!'."\n"
]);

// Download the contents of the object.
$retrive = $s3->getObject([
     'Bucket' => 'testbucket',
     'Key'    => 'testFer',
     'SaveAs' => 'testkey_local'
]);

$directorio = opendir("tests/comp/");
		while ($archivo = readdir($directorio))
		{
			if (is_dir($archivo))
			{
			}
			else
			{
				$result = $s3->putObject(array(
			    'Bucket'     => 'testbucket',
			    'Key'        => 'dir/'.$archivo,
			    'SourceFile' => '/home/iksop/Escritorio/te/installer/behat/testScreenshot/tests/comp/' . $archivo    
				));

// We can poll the object until it is accessible
				$s3->waitUntil('ObjectExists', array(
			    'Bucket' => 'testbucket',
			    'Key'    => 'dir/'.$archivo
				));
			}
		}

// Print the body of the result by indexing into the result object.
echo $retrive['Body'];