试试这边

$s3->create_object($bucket, 'folder/filename', $options)

简单地做一件事，添加'path/' ex：如果你有一个文件夹'videos'在一个bucket，那么你必须在'key' =〉'videos/video-name-here'中添加这样的路径。

try {
    // Upload data.
$result = $s3Client->putObject([
    'Bucket' => bucket-name,
    'Key'    => 'videos/video-name', //add path here
    'Body'   => fopen($video, 'r'),
    'ACL'    => 'public-read'
]);
print_r($result['ObjectURL']);

} catch (S3Exception $e) {
    echo $e->getMessage() . PHP_EOL;
}

这是你可以尝试的另一种方法

$this->Aws->bucket = 'bucket'
    $old_file = $dir. '/'.old_file_name;       
    $new_file = $dir. '/'.new_file_name;
    $file_permission = 'private';
    $this->Aws->upload($old_file , $new_file , $file_permission);

由于这里所有的答案都很旧，这是谷歌上的第一个结果，我发布更新的版本：

$client = new \Aws\S3\S3Client([
    'region'  => '-- your region --',
    'version' => 'latest',
    'credentials' => [
        'key'    => "-- your IAM --",
        'secret' => "-- your secret --",
    ]
]);

$dir = '/local/directory';
$bucket = 'my-bucket';
$keyPrefix = '';
$options =[
    'params'      => ['ACL' => 'public-read'],
    'concurrency' => 20,
    'debug'       => true
];

$client->uploadDirectory($dir, $bucket, $keyPrefix, $options);