You can delete unnecessary tags of an object based on your requirements. If versioning is enabled for a bucket that stores the object whose tags you want to delete, Object Storage Service (OSS) deletes the tags of the current version of the object by default. To delete the tags of a specified version of the object, you must specify the version ID of the object.
Object tagging uses a key-value pair to identify objects. For more information about object tags, see Add tags to an object.
For more information about how to delete object tags, see DeleteObjectTagging.
Usage notes
In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS from other Alibaba Cloud services in the same region as OSS, use an internal endpoint. For more information about OSS 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.
To delete the tags of an object, you must have the
oss:DeleteObjectTagging
permission. For more information, see Attach a custom policy to a RAM user.
Delete the tags of an object
If versioning is not enabled for the bucket that stores the object whose tags you want to delete, you can delete the tags of the object based on your requirements. If versioning is enabled for the bucket that stores the object whose tags you want to delete, OSS deletes the tags of the current version of the object by default.
The following code provides an example on how to delete the tags of the exampleobject.txt object in the exampledir directory of the examplebucket bucket:
<?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;
use OSS\CoreOssException;
// 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();
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com.
$endpoint = "yourEndpoint";
// Specify the name of the bucket. Example: examplebucket.
$bucket = "examplebucket";
// Specify the full path of the object. Example: exampledir/exampleobject.txt. Do not include the bucket name in the full path.
$object = "exampledir/exampleobject.txt";
$config = array(
"provider" => $provider,
"endpoint" => $endpoint,
);
$ossClient = new OssClient($config);
try {
// Delete the tags of the object.
$ossClient->deleteObjectTagging($bucket, $object);
printf("deleteObjectTagging Success" . "\n");
} catch (OssException $e) {
printf($e->getMessage() . "\n");
return;
}
Delete the tags of a specific version of an object
If versioning is enabled for the bucket that stores the object whose tags you want to delete, you can delete the tags of a specified version of the object by specifying the version ID of the object.
The following code provides an example on how to delete the tags of a specified version of the exampleobject.txt object in the exampledir directory of the examplebucket bucket:
For more information about how to obtain version IDs, see List objects.
<?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;
use OSS\CoreOssException;
// 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();
// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com.
$endpoint = "yourEndpoint";
// Specify the name of the bucket. Example: examplebucket.
$bucket = "examplebucket";
// Specify the full path of the object. Example: exampledir/exampleobject.txt. Do not include the bucket name in the full path.
$object = "exampledir/exampleobject.txt";
// Specify the version ID of the object. Example: CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****.
$options = array(
'versionId'=>'CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****'
);
$config = array(
"provider" => $provider,
"endpoint" => $endpoint,
);
$ossClient = new OssClient($config);
try {
// Delete the tags of the specified version of the object.
$ossClient->deleteObjectTagging($bucket, $object,$options);
printf("deleteObjectTagging Success" . "\n");
} catch (OssException $e) {
printf($e->getMessage() . "\n");
return;
}