All Products
Search
Document Center

Object Storage Service:Delete object tags (PHP SDK V1)

Last Updated:Nov 28, 2025

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.

Note
  • Object tagging uses key-value pairs to mark objects. For more information about object tagging, see Object tagging.

  • 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. 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.

  • To delete object tags, you must have the oss:DeleteObjectTagging permission. For more information, see Grant custom access policies to RAM users.

Delete object tags

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 set. 
$provider = new EnvironmentVariableCredentialsProvider();
// Replace yourEndpoint with the Endpoint of the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Endpoint to https://oss-cn-hangzhou.aliyuncs.com.
$endpoint = "yourEndpoint";
// Set bucket to the name of the bucket, for example, examplebucket.
$bucket = "examplebucket";
// Set object to the full path of the object, for example, exampledir/exampleobject.txt. The full path cannot contain the bucket name.
$object = "exampledir/exampleobject.txt";

 $config = array(
        "provider" => $provider,
        "endpoint" => $endpoint,
        "signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
        "region"=> "cn-hangzhou"
    );
    $ossClient = new OssClient($config);

try {
    // Delete the object tags.
    $ossClient->deleteObjectTagging($bucket, $object);
    printf("deleteObjectTagging Success" . "\n");

} catch (OssException $e) {
    printf($e->getMessage() . "\n");
    return;
}

Delete tags of a specific object version

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:

Note

For more information about how to obtain version IDs, see List objects using OSS SDK for PHP 1.0.

<?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 set. 
$provider = new EnvironmentVariableCredentialsProvider();
// Replace yourEndpoint with the Endpoint of the region where the bucket is located. For example, if the bucket is in the China (Hangzhou) region, set the Endpoint to https://oss-cn-hangzhou.aliyuncs.com.
$endpoint = "yourEndpoint";
// Set bucket to the name of the bucket, for example, examplebucket.
$bucket = "examplebucket";
// Set object to the full path of the object, for example, exampledir/exampleobject.txt. The full path cannot contain the bucket name.
$object = "exampledir/exampleobject.txt";
// Set versionId to the version ID of the object, for example, CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****.
$options = array(
    'versionId'=>'CAEQMxiBgICAof2D0BYiIDJhMGE3N2M1YTI1NDQzOGY5NTkyNTI3MGYyMzJm****'
);

 $config = array(
        "provider" => $provider,
        "endpoint" => $endpoint,
        "signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
        "region"=> "cn-hangzhou"
    );
    $ossClient = new OssClient($config);

try {
   // Delete the object tags.
   $ossClient->deleteObjectTagging($bucket, $object,$options);
   printf("deleteObjectTagging Success" . "\n");
} catch (OssException $e) {
   printf($e->getMessage() . "\n");
   return;
}