基本的AWS S3 PHP设置

我已经尝试了一段时间，只是设置了上传表单的基本PHP实现，以上传到Amazon的S3服务，但是我什么都无法工作。

通读他们的文档，他们的例子似乎都不同。提供凭据和上传文件的正确方法是什么？

在他们的github仓库中，它说：

// Require the Composer autoloader.
require 'vendor/autoload.php';

use Aws\S3\S3Client;

// Instantiate an Amazon S3 client.
$s3 = new S3Client([
    'version' => 'latest',
    'region'  => 'us-west-2'
]);

try {
    $s3->putObject([
        'Bucket' => 'my-bucket',
        'Key'    => 'my-object',
        'Body'   => fopen('/path/to/file', 'r'),
        'ACL'    => 'public-read',
    ]);
} catch (Aws\Exception\S3Exception $e) {
    echo "There was an error uploading the file.\n";
}

在http://docs.aws.amazon.com/aws-sdk-php/v2/guide/service-s3.html上，他们说：

use Aws\S3\S3Client;

$client = S3Client::factory(array(
    'profile' => '<profile in your aws credentials file>'
));

// Upload an object by streaming the contents of a file
// $pathToFile should be absolute path to a file on disk
$result = $client->putObject(array(
    'Bucket'     => $bucket,
    'Key'        => 'data_from_file.txt',
    'SourceFile' => $pathToFile,
    'Metadata'   => array(
        'Foo' => 'abc',
        'Baz' => '123'
    )
));

// We can poll the object until it is accessible
$client->waitUntil('ObjectExists', array(
    'Bucket' => $this->bucket,
    'Key'    => 'data_from_file.txt'
));

最近能够做到这一点的任何人都可以对此处的设置有所了解吗？