OSS 下载文件重命名（PHP-SDK）
// 阿里云主账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM账号进行API访问或日常运维，请登录 创建RAM账号。
$accessKeyId = "<yourAccessKeyId>";
$accessKeySecret = "<yourAccessKeySecret>";
// Endpoint以杭州为例，其它Region请按实际情况填写。
$endpoint = "";
$bucket= "<yourBucketName>";
$object = "<yourObjectName>";
$securityToken = "<yourSecurityToken>";
// 设置URL的有效期为3600秒。
$timeout = 3600;
$ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint, false, $securityToken);
$new_file_name = '';
$oss_config = array(
$ossClient::OSS_SUB_RESOURCE => 'response-content-disposition=attachment%3Bfilename%3D'.$new_file_name
);
// 生成GetObject的签名URL。
$signedUrl = $ossClient->signUrl($bucket, $object, $timeout, $ossClient::OSS_HTTP_GET, $oss_config);