This topic describes how to use the PHP SDK to download specific objects to local memory.
Usage notes
In this topic, the public endpoint of the China (Hangzhou) region is used. To access OSS from other Alibaba Cloud services in the same region, use an internal endpoint. For details about supported regions and endpoints, see Regions and endpoints.
In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or Security Token Service (STS), see Create an OSSClient instance.
Permissions
By default, an Alibaba Cloud account has full permissions. RAM users or RAM roles under an Alibaba Cloud account do not have any permissions by default. The Alibaba Cloud account or account administrator must grant operation permissions through RAM Policy or Bucket Policy.
API | Action | Definition |
GetObject |
| Downloads an object. |
| When downloading an object, if you specify the object version through versionId, this permission is required. | |
| When downloading an object, if the object metadata contains X-Oss-Server-Side-Encryption: KMS, this permission is required. |
Examples
The following sample code shows how to download a specific OSS object to local memory and print its content:
<?php
if (is_file(__DIR__ . '/../autoload.php')) {
require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
require_once __DIR__ . '/../vendor/autoload.php';
}
use OSS\Credentials\EnvironmentVariableCredentialsProvider;
use OSS\OssClient;
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
$provider = new EnvironmentVariableCredentialsProvider();
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
$endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
$bucket= "yourBucketName";
// Specify the object name.
$object = "yourObjectName";
try{
$config = array(
"provider" => $provider,
"endpoint" => $endpoint,
"signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
"region"=> "cn-hangzhou"
);
$ossClient = new OssClient($config);
$content = $ossClient->getObject($bucket, $object);
} catch(OssException $e) {
printf(__FUNCTION__ . ": FAILED\n");
printf($e->getMessage() . "\n");
return;
}
print($content);
print(__FUNCTION__ . ": OK" . "\n");
Data in memory is lost if a power failure occurs. To save the downloaded object to a local disk, see Download an object to a local file.