# Managing Amazon S3 bucket access permissions with the AWS SDK for PHP Version 3
<a name="s3-examples-access-permissions"></a>

Access control lists (ACLs) are one of the resource-based access policy options you can use to manage access to your buckets and objects. You can use ACLs to grant basic read/write permissions to other AWS accounts. To learn more, see [Managing Access with ACLs](https://docs.aws.amazon.com/AmazonS3/latest/dev/S3_ACLs_UsingACLs.html).

The following example shows how to:
+ Get the access control policy for a bucket using [GetBucketAcl](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-s3-2006-03-01.html#getbucketacl).
+ Set the permissions on a bucket using ACLs, using [PutBucketAcl](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-s3-2006-03-01.html#putbucketacl).

All the example code for the AWS SDK for PHP is available [here on GitHub](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code).

## Credentials
<a name="examplecredentials"></a>

Before running the example code, configure your AWS credentials, as described in [Authenticating with AWS using AWS SDK for PHP Version 3](credentials.md). Then import the AWS SDK for PHP, as described in [Installing the AWS SDK for PHP Version 3](getting-started_installation.md).

## Get and set an access control list policy
<a name="get-and-set-an-access-control-list-policy"></a>

 **Imports** 

```
require 'vendor/autoload.php';

use Aws\S3\S3Client;  
use Aws\Exception\AwsException;
```

 **Sample Code** 

```
// Create a S3Client 
$s3Client = new S3Client([
    'profile' => 'default',
    'region' => 'us-west-2',
    'version' => '2006-03-01'
]);

// Gets the access control policy for a bucket
$bucket = 'amzn-s3-demo-bucket';
try {
    $resp = $s3Client->getBucketAcl([
        'Bucket' => $bucket
    ]);
    echo "Succeed in retrieving bucket ACL as follows: \n";
    var_dump($resp);
} catch (AwsException $e) {
    // output error message if fails
    echo $e->getMessage();
    echo "\n";
}

// Sets the permissions on a bucket using access control lists (ACL).
$params = [
    'ACL' => 'public-read',
    'AccessControlPolicy' => [
        // Information can be retrieved from `getBucketAcl` response
        'Grants' => [
            [
                'Grantee' => [
                    'DisplayName' => '<string>',
                    'EmailAddress' => '<string>',
                    'ID' => '<string>',
                    'Type' => 'CanonicalUser',
                    'URI' => '<string>',
                ],
                'Permission' => 'FULL_CONTROL',
            ],
            // ...
        ],
        'Owner' => [
            'DisplayName' => '<string>',
            'ID' => '<string>',
        ],
    ],
    'Bucket' => $bucket,
];

try {
    $resp = $s3Client->putBucketAcl($params);
    echo "Succeed in setting bucket ACL.\n";
} catch (AwsException $e) {
    // Display error message
    echo $e->getMessage();
    echo "\n";
}
```