本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# 使用 Amazon CloudFront CloudFront 分佈 適用於 PHP 的 AWS SDK
<a name="cloudfront-example-distribution"></a>

Amazon CloudFront 會在全球節點快取內容，以加速靜態和動態檔案的分佈，而這些檔案會存放在您自己的伺服器上，或在 Amazon S3 和 Amazon EC2 等 Amazon 服務上。當使用者從您的網站請求內容時，如果檔案快取到該處，CloudFront 會從最接近的節點提供內容。否則CloudFront 會擷取檔案的副本、提供該檔案，然後快取該檔案以供下一個請求使用。在節點上快取內容會降低在該區域類似使用者請求的延遲。

對於您建立的每個 CloudFront 分發，您可以指定內容所在的位置，以及在使用者提出請求時如何分發內容。這個主題著重於靜態和動態檔案 (例如 HTML、CSS、JSON 和映像檔案) 的分佈。F 或有關隨需視訊使用 CloudFront 的資訊，請參閱[隨需和 CloudFront 即時串流視訊](https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/on-demand-streaming-video.html)。

下列範例示範如何：
+ 使用 [CreateDistribution](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-cloudfront-2018-11-05.html#createdistribution) 建立分佈。
+ 使用 [GetDistribution](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-cloudfront-2018-11-05.html#getdistribution) 取得分佈。
+ 使用 [ListDistributions](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-cloudfront-2018-11-05.html#listdistributions) 列出分佈。
+ 使用 [UpdateDistributions](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-cloudfront-2018-11-05.html#updatedistribution) 更新分佈。
+ 使用 [DisableDistribution](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-cloudfront-2018-11-05.html#disabledistribution) 停用分佈。
+ 使用 [DeleteDistributions](https://docs.aws.amazon.com/aws-sdk-php/v3/api/api-cloudfront-2018-11-05.html#deletedistribution) 刪除分佈。

您可以在 GitHub 適用於 PHP 的 AWS SDK 上取得 的所有範例程式碼。 [ GitHub](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/php/example_code)

## 登入資料
<a name="examplecredentials"></a>

執行範例程式碼之前，請先設定您的 AWS 登入資料，如中所述[AWS 使用第 3 適用於 PHP 的 AWS SDK 版向 驗證](credentials.md)。然後匯入 適用於 PHP 的 AWS SDK，如 中所述[安裝第 3 適用於 PHP 的 AWS SDK 版](getting-started_installation.md)。

如需使用 Amazon CloudFront 的詳細資訊，請參閱《[Amazon CloudFront 開發人員指南](https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/)》。

## 建立 CloudFront 分佈
<a name="create-a-cf-distribution"></a>

從 Amazon S3 儲存貯體建立分佈。在以下範例中，已將可選參數標示為註解，但會顯示預設值。若要將自訂新增到分佈，請同時取消 `$distribution` 中值和參數的註解。

若要建立 CloudFront 分佈，請使用 [CreateDistribution](https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_CreateDistribution.html) 操作。

 **匯入** 

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

use Aws\Exception\AwsException;
```

 **範例程式碼** 

```
function createS3Distribution($cloudFrontClient, $distribution)
{
    try {
        $result = $cloudFrontClient->createDistribution([
            'DistributionConfig' => $distribution
        ]);

        $message = '';

        if (isset($result['Distribution']['Id'])) {
            $message = 'Distribution created with the ID of ' .
                $result['Distribution']['Id'];
        }

        $message .= ' and an effective URI of ' .
            $result['@metadata']['effectiveUri'] . '.';

        return $message;
    } catch (AwsException $e) {
        return 'Error: ' . $e['message'];
    }
}

function createsTheS3Distribution()
{
    $originName = 'my-unique-origin-name';
    $s3BucketURL = 'amzn-s3-demo-bucket.s3.amazonaws.com';
    $callerReference = 'my-unique-caller-reference';
    $comment = 'my-comment-about-this-distribution';
    $defaultCacheBehavior = [
        'AllowedMethods' => [
            'CachedMethods' => [
                'Items' => ['HEAD', 'GET'],
                'Quantity' => 2
            ],
            'Items' => ['HEAD', 'GET'],
            'Quantity' => 2
        ],
        'Compress' => false,
        'DefaultTTL' => 0,
        'FieldLevelEncryptionId' => '',
        'ForwardedValues' => [
            'Cookies' => [
                'Forward' => 'none'
            ],
            'Headers' => [
                'Quantity' => 0
            ],
            'QueryString' => false,
            'QueryStringCacheKeys' => [
                'Quantity' => 0
            ]
        ],
        'LambdaFunctionAssociations' => ['Quantity' => 0],
        'MaxTTL' => 0,
        'MinTTL' => 0,
        'SmoothStreaming' => false,
        'TargetOriginId' => $originName,
        'TrustedSigners' => [
            'Enabled' => false,
            'Quantity' => 0
        ],
        'ViewerProtocolPolicy' => 'allow-all'
    ];
    $enabled = false;
    $origin = [
        'Items' => [
            [
                'DomainName' => $s3BucketURL,
                'Id' => $originName,
                'OriginPath' => '',
                'CustomHeaders' => ['Quantity' => 0],
                'S3OriginConfig' => ['OriginAccessIdentity' => '']
            ]
        ],
        'Quantity' => 1
    ];
    $distribution = [
        'CallerReference' => $callerReference,
        'Comment' => $comment,
        'DefaultCacheBehavior' => $defaultCacheBehavior,
        'Enabled' => $enabled,
        'Origins' => $origin
    ];

    $cloudFrontClient = new Aws\CloudFront\CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-1'
    ]);

    echo createS3Distribution($cloudFrontClient, $distribution);
}

// Uncomment the following line to run this code in an AWS account.
// createsTheS3Distribution();
```

## 擷取 CloudFront 分佈
<a name="retrieve-a-cf-distribution"></a>

若要擷取指定 CloudFront 分佈的狀態和詳細資訊，請使用 [GetDistribution](https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_GetDistribution.html) 操作。

 **匯入** 

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

use Aws\Exception\AwsException;
```

 **範例程式碼** 

```
function getDistribution($cloudFrontClient, $distributionId)
{
    try {
        $result = $cloudFrontClient->getDistribution([
            'Id' => $distributionId
        ]);

        $message = '';

        if (isset($result['Distribution']['Status'])) {
            $message = 'The status of the distribution with the ID of ' .
                $result['Distribution']['Id'] . ' is currently ' .
                $result['Distribution']['Status'];
        }

        if (isset($result['@metadata']['effectiveUri'])) {
            $message .= ', and the effective URI is ' .
                $result['@metadata']['effectiveUri'] . '.';
        } else {
            $message = 'Error: Could not get the specified distribution. ' .
                'The distribution\'s status is not available.';
        }

        return $message;
    } catch (AwsException $e) {
        return 'Error: ' . $e->getAwsErrorMessage();
    }
}

function getsADistribution()
{
    $distributionId = 'E1BTGP2EXAMPLE';

    $cloudFrontClient = new Aws\CloudFront\CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-1'
    ]);

    echo getDistribution($cloudFrontClient, $distributionId);
}

// Uncomment the following line to run this code in an AWS account.
// getsADistribution();
```

## 列出 CloudFront 分佈
<a name="list-cf-distributions"></a>

使用 [ListDistributions](https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_ListDistributions.html) 操作，從目前帳戶取得指定 AWS 區域中的現有 CloudFront 分佈清單。

 **匯入** 

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

use Aws\Exception\AwsException;
```

 **範例程式碼** 

```
function listDistributions($cloudFrontClient)
{
    try {
        $result = $cloudFrontClient->listDistributions([]);
        return $result;
    } catch (AwsException $e) {
        exit('Error: ' . $e->getAwsErrorMessage());
    }
}

function listTheDistributions()
{
    $cloudFrontClient = new Aws\CloudFront\CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-2'
    ]);

    $distributions = listDistributions($cloudFrontClient);

    if (count($distributions) == 0) {
        echo 'Could not find any distributions.';
    } else {
        foreach ($distributions['DistributionList']['Items'] as $distribution) {
            echo 'The distribution with the ID of ' . $distribution['Id'] .
                ' has the status of ' . $distribution['Status'] . '.' . "\n";
        }
    }
}

// Uncomment the following line to run this code in an AWS account.
// listTheDistributions();
```

## 更新 CloudFront 分佈
<a name="update-a-cf-distribution"></a>

更新 CloudFront 分佈類似於建立分佈。不過，當您更新分佈時，必須填寫多個欄位且必須包含所有值。若要對現有分佈進行變更，建議您先擷取現有的分佈，並在 `$distribution` 陣列中更新您要變更的值。

若要更新指定的 CloudFront 分佈，請使用 [UpdateDistribution](https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_UpdateDistribution.html) 操作。

 **匯入** 

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

use Aws\CloudFront\CloudFrontClient;
use Aws\Exception\AwsException;
```

 **範例程式碼** 

```
function updateDistribution(
    $cloudFrontClient,
    $distributionId,
    $distributionConfig,
    $eTag
) {
    try {
        $result = $cloudFrontClient->updateDistribution([
            'DistributionConfig' => $distributionConfig,
            'Id' => $distributionId,
            'IfMatch' => $eTag
        ]);

        return 'The distribution with the following effective URI has ' .
            'been updated: ' . $result['@metadata']['effectiveUri'];
    } catch (AwsException $e) {
        return 'Error: ' . $e->getAwsErrorMessage();
    }
}

function getDistributionConfig($cloudFrontClient, $distributionId)
{
    try {
        $result = $cloudFrontClient->getDistribution([
            'Id' => $distributionId,
        ]);

        if (isset($result['Distribution']['DistributionConfig'])) {
            return [
                'DistributionConfig' => $result['Distribution']['DistributionConfig'],
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        } else {
            return [
                'Error' => 'Error: Cannot find distribution configuration details.',
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        }
    } catch (AwsException $e) {
        return [
            'Error' => 'Error: ' . $e->getAwsErrorMessage()
        ];
    }
}

function getDistributionETag($cloudFrontClient, $distributionId)
{
    try {
        $result = $cloudFrontClient->getDistribution([
            'Id' => $distributionId,
        ]);

        if (isset($result['ETag'])) {
            return [
                'ETag' => $result['ETag'],
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        } else {
            return [
                'Error' => 'Error: Cannot find distribution ETag header value.',
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        }
    } catch (AwsException $e) {
        return [
            'Error' => 'Error: ' . $e->getAwsErrorMessage()
        ];
    }
}

function updateADistribution()
{
    // $distributionId = 'E1BTGP2EXAMPLE';
    $distributionId = 'E1X3BKQ569KEMH';

    $cloudFrontClient = new CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-1'
    ]);

    // To change a distribution, you must first get the distribution's
    // ETag header value.
    $eTag = getDistributionETag($cloudFrontClient, $distributionId);

    if (array_key_exists('Error', $eTag)) {
        exit($eTag['Error']);
    }

    // To change a distribution, you must also first get information about
    // the distribution's current configuration. Then you must use that
    // information to build a new configuration.
    $currentConfig = getDistributionConfig($cloudFrontClient, $distributionId);

    if (array_key_exists('Error', $currentConfig)) {
        exit($currentConfig['Error']);
    }

    // To change a distribution's configuration, you can set the
    // distribution's related configuration value as part of a change request,
    // for example:
    // 'Enabled' => true
    // Some configuration values are required to be specified as part of a change
    // request, even if you don't plan to change their values. For ones you
    // don't want to change but are required to be specified, you can just reuse
    // their current values, as follows.
    $distributionConfig = [
        'CallerReference' => $currentConfig['DistributionConfig']["CallerReference"],
        'Comment' => $currentConfig['DistributionConfig']["Comment"],
        'DefaultCacheBehavior' => $currentConfig['DistributionConfig']["DefaultCacheBehavior"],
        'DefaultRootObject' => $currentConfig['DistributionConfig']["DefaultRootObject"],
        'Enabled' => $currentConfig['DistributionConfig']["Enabled"],
        'Origins' => $currentConfig['DistributionConfig']["Origins"],
        'Aliases' => $currentConfig['DistributionConfig']["Aliases"],
        'CustomErrorResponses' => $currentConfig['DistributionConfig']["CustomErrorResponses"],
        'HttpVersion' => $currentConfig['DistributionConfig']["HttpVersion"],
        'CacheBehaviors' => $currentConfig['DistributionConfig']["CacheBehaviors"],
        'Logging' => $currentConfig['DistributionConfig']["Logging"],
        'PriceClass' => $currentConfig['DistributionConfig']["PriceClass"],
        'Restrictions' => $currentConfig['DistributionConfig']["Restrictions"],
        'ViewerCertificate' => $currentConfig['DistributionConfig']["ViewerCertificate"],
        'WebACLId' => $currentConfig['DistributionConfig']["WebACLId"]
    ];

    echo updateDistribution(
        $cloudFrontClient,
        $distributionId,
        $distributionConfig,
        $eTag['ETag']
    );
}

// Uncomment the following line to run this code in an AWS account.
// updateADistribution();
```

## 停用 CloudFront 分佈
<a name="disable-a-cf-distribution"></a>

若要停用或移除分佈，請將其狀態從部署變更為停用。

若要停用指定的 CloudFront 分佈，請使用 [DisableDistribution](https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_DisableDistribution.html) 操作。

 **匯入** 

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

use Aws\Exception\AwsException;
```

 **範例程式碼** 

```
function disableDistribution(
    $cloudFrontClient,
    $distributionId,
    $distributionConfig,
    $eTag
) {
    try {
        $result = $cloudFrontClient->updateDistribution([
            'DistributionConfig' => $distributionConfig,
            'Id' => $distributionId,
            'IfMatch' => $eTag
        ]);
        return 'The distribution with the following effective URI has ' .
            'been disabled: ' . $result['@metadata']['effectiveUri'];
    } catch (AwsException $e) {
        return 'Error: ' . $e->getAwsErrorMessage();
    }
}

function getDistributionConfig($cloudFrontClient, $distributionId)
{
    try {
        $result = $cloudFrontClient->getDistribution([
            'Id' => $distributionId,
        ]);

        if (isset($result['Distribution']['DistributionConfig'])) {
            return [
                'DistributionConfig' => $result['Distribution']['DistributionConfig'],
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        } else {
            return [
                'Error' => 'Error: Cannot find distribution configuration details.',
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        }
    } catch (AwsException $e) {
        return [
            'Error' => 'Error: ' . $e->getAwsErrorMessage()
        ];
    }
}

function getDistributionETag($cloudFrontClient, $distributionId)
{
    try {
        $result = $cloudFrontClient->getDistribution([
            'Id' => $distributionId,
        ]);

        if (isset($result['ETag'])) {
            return [
                'ETag' => $result['ETag'],
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        } else {
            return [
                'Error' => 'Error: Cannot find distribution ETag header value.',
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        }
    } catch (AwsException $e) {
        return [
            'Error' => 'Error: ' . $e->getAwsErrorMessage()
        ];
    }
}

function disableADistribution()
{
    $distributionId = 'E1BTGP2EXAMPLE';

    $cloudFrontClient = new Aws\CloudFront\CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-1'
    ]);

    // To disable a distribution, you must first get the distribution's
    // ETag header value.
    $eTag = getDistributionETag($cloudFrontClient, $distributionId);

    if (array_key_exists('Error', $eTag)) {
        exit($eTag['Error']);
    }

    // To delete a distribution, you must also first get information about
    // the distribution's current configuration. Then you must use that
    // information to build a new configuration, including setting the new
    // configuration to "disabled".
    $currentConfig = getDistributionConfig($cloudFrontClient, $distributionId);

    if (array_key_exists('Error', $currentConfig)) {
        exit($currentConfig['Error']);
    }

    $distributionConfig = [
        'CacheBehaviors' => $currentConfig['DistributionConfig']["CacheBehaviors"],
        'CallerReference' => $currentConfig['DistributionConfig']["CallerReference"],
        'Comment' => $currentConfig['DistributionConfig']["Comment"],
        'DefaultCacheBehavior' => $currentConfig['DistributionConfig']["DefaultCacheBehavior"],
        'DefaultRootObject' => $currentConfig['DistributionConfig']["DefaultRootObject"],
        'Enabled' => false,
        'Origins' => $currentConfig['DistributionConfig']["Origins"],
        'Aliases' => $currentConfig['DistributionConfig']["Aliases"],
        'CustomErrorResponses' => $currentConfig['DistributionConfig']["CustomErrorResponses"],
        'HttpVersion' => $currentConfig['DistributionConfig']["HttpVersion"],
        'Logging' => $currentConfig['DistributionConfig']["Logging"],
        'PriceClass' => $currentConfig['DistributionConfig']["PriceClass"],
        'Restrictions' => $currentConfig['DistributionConfig']["Restrictions"],
        'ViewerCertificate' => $currentConfig['DistributionConfig']["ViewerCertificate"],
        'WebACLId' => $currentConfig['DistributionConfig']["WebACLId"]
    ];

    echo disableDistribution(
        $cloudFrontClient,
        $distributionId,
        $distributionConfig,
        $eTag['ETag']
    );
}

// Uncomment the following line to run this code in an AWS account.
// disableADistribution();
```

## 刪除 CloudFront 分佈
<a name="delete-a-cf-distribution"></a>

一旦分佈的狀態為停用，即可將其刪除。

若要移除指定的 CloudFront 分佈，請使用 [DeleteDistribution](https://docs.aws.amazon.com/cloudfront/latest/APIReference/API_DeleteDistribution.html) 操作。

 **匯入** 

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

use Aws\Exception\AwsException;
```

 **範例程式碼** 

```
function deleteDistribution($cloudFrontClient, $distributionId, $eTag)
{
    try {
        $result = $cloudFrontClient->deleteDistribution([
            'Id' => $distributionId,
            'IfMatch' => $eTag
        ]);
        return 'The distribution at the following effective URI has ' .
            'been deleted: ' . $result['@metadata']['effectiveUri'];
    } catch (AwsException $e) {
        return 'Error: ' . $e->getAwsErrorMessage();
    }
}

function getDistributionETag($cloudFrontClient, $distributionId)
{
    try {
        $result = $cloudFrontClient->getDistribution([
            'Id' => $distributionId,
        ]);

        if (isset($result['ETag'])) {
            return [
                'ETag' => $result['ETag'],
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        } else {
            return [
                'Error' => 'Error: Cannot find distribution ETag header value.',
                'effectiveUri' => $result['@metadata']['effectiveUri']
            ];
        }
    } catch (AwsException $e) {
        return [
            'Error' => 'Error: ' . $e->getAwsErrorMessage()
        ];
    }
}

function deleteADistribution()
{
    $distributionId = 'E17G7YNEXAMPLE';

    $cloudFrontClient = new Aws\CloudFront\CloudFrontClient([
        'profile' => 'default',
        'version' => '2018-06-18',
        'region' => 'us-east-1'
    ]);

    // To delete a distribution, you must first get the distribution's
    // ETag header value.
    $eTag = getDistributionETag($cloudFrontClient, $distributionId);

    if (array_key_exists('Error', $eTag)) {
        exit($eTag['Error']);
    } else {
        echo deleteDistribution(
            $cloudFrontClient,
            $distributionId,
            $eTag['ETag']
        );
    }
}

// Uncomment the following line to run this code in an AWS account.
// deleteADistribution();
```