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    Object Storage Service:OSS SDK for PHPを使用してIMGパラメータを使用した画像処理

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    Object Storage Service:OSS SDK for PHPを使用してIMGパラメータを使用した画像処理

    最終更新日:Nov 19, 2024

    Image Processing (IMG) は、イメージの処理を支援するためにObject Storage service (OSS) によって提供される、安全で費用対効果の高い信頼性の高いイメージ処理サービスです。 ソースイメージをOSSにアップロードした後、RESTful APIを呼び出して、いつでもどこでも、接続されたデバイスでイメージを処理できます。

    使用上の注意

    • このトピックでは、中国 (杭州) リージョンのパブリックエンドポイントを使用します。 OSSと同じリージョンにある他のAlibaba CloudサービスからOSSにアクセスする場合は、内部エンドポイントを使用します。 OSSリージョンとエンドポイントの詳細については、「リージョン、エンドポイント、オープンポート」をご参照ください。

    • このトピックでは、OSSエンドポイントを使用してOSSClientインスタンスを作成します。 カスタムドメイン名またはSecurity Token Service (STS) を使用してOSSClientインスタンスを作成する場合は、「OSSClientインスタンスの作成」をご参照ください。

    • OSSでは、1つ以上のIMGパラメータを使用してイメージを処理できます。 詳細は、「IMGパラメーター」をご参照ください。 完全なサンプルコードについては、『GitHub』をご参照ください。

    IMGパラメータを使用した画像処理

    • 単一のIMGパラメータを使用して画像を処理し、処理した画像をローカルコンピュータに保存する

      <?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();
// 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.jpg. Do not include the bucket name in the full path. 
$object = "exampledir/exampleobject.jpg";
// Specify the full path to which you want to save the processed image. Example: D:\\localpath\\example-resize.jpg. If a file that has the same name already exists, the downloaded object overwrites the file. Otherwise, the downloaded object is saved in the path. 
// If you specify only the name of the file such as example-resize.jpg but do not specify the local path, the file is saved to the path of the project to which the sample program belongs. 
$download_file = "D:\\localpath\\example-resize.jpg";

$config = array(
        "provider" => $provider,
        "endpoint" => $endpoint,
        "signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
        "region"=> "cn-hangzhou"
    );
    $ossClient = new OssClient($config);
// If the image that you want to process does not exist in the specified bucket, you must upload the image to the specified bucket. 
// $ossClient->uploadFile($bucket, $object, "D:\\localpath\\exampleobject.jpg");

// Resize the image to 100 x 100 pixels. 
$options = array(
    OssClient::OSS_FILE_DOWNLOAD => $download_file,
    OssClient::OSS_PROCESS => "image/resize,m_fixed,h_100,w_100" );
// Save the processed image as example-resize.jpg to your local computer. 
$ossClient->getObject($bucket, $object, $options);

// After the image is processed, you can delete the source image from the bucket if you no longer need the image. 
// $ossClient->deleteObject($bucket, $object);

    • 複数のIMGパラメータを使用して画像を処理し、処理した画像をローカルコンピュータに保存する

      次のサンプルコードは、複数のIMGパラメーターを使用してイメージを処理する方法の例を示しています。 IMGパラメータは、スラッシュ (/) で区切られます。 

      <?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();
// 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.jpg. Do not include the bucket name in the full path. 
$object = "exampledir/exampleobject.jpg";
// Specify the full path to which you want to save the processed image. Example: D:\\localpath\\example-new.jpg. If a file that has the same name already exists, the downloaded object overwrites the file. Otherwise, the downloaded object is saved in the path. 
// If you specify only the name of the file such as example-new.jpg but do not specify the local path, the file is saved to the path of the project to which the sample program belongs. 
$download_file = "D:\\localpath\\example-new.jpg";

$config = array(
        "provider" => $provider,
        "endpoint" => $endpoint,
        "signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
        "region"=> "cn-hangzhou"
    );
    $ossClient = new OssClient($config);
// If the image that you want to process does not exist in the specified bucket, you must upload the image to the specified bucket. 
// $ossClient->uploadFile($bucket, $object, "D:\\localpath\\exampleobject.jpg");

// Resize the image to 100 × 100 pixels and rotate the image 90 degrees. 
$style = "image/resize,m_fixed,w_100,h_100/rotate,90";

$options = array(
    OssClient::OSS_FILE_DOWNLOAD => $download_file,
    OssClient::OSS_PROCESS => $style);

// Save the processed image as example-new.jpg to your local computer. 
$ossClient->getObject($bucket, $object, $options);

// After the image is processed, you can delete the source image from the bucket if you no longer need the image. 
// $ossClient->deleteObject($bucket, $object);

    画像スタイルを使用して画像を処理する

    OSSコンソールでイメージスタイルを作成し、そのスタイルに複数のIMGパラメーターをカプセル化できます。 次に、スタイルを使用して画像を処理できます。 詳細については、「イメージスタイル」をご参照ください。

    次のサンプルコードは、イメージスタイルを使用してイメージを処理する方法の例を示しています。 

    <?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();
// 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.jpg. Do not include the bucket name in the full path. 
$object = "exampledir/exampleobject.jpg";
// Specify the full path to which you want to save the processed image. Example: D:\\localpath\\example-new.jpg. If a file that has the same name already exists, the downloaded object overwrites the file. Otherwise, the downloaded object is saved in the path. 
// If you specify only the name of the file such as example-new.jpg but do not specify the local path, the file is saved to the path of the project to which the sample program belongs. 
$download_file = "D:\\localpath\\example-new.jpg";

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

// If the image that you want to process does not exist in the specified bucket, you must upload the image to the specified bucket. 
// $ossClient->uploadFile($bucket, $object, "D:\\localpath\\exampleobject.jpg");

// Use the custom image style to process the image. 
// Set yourCustomStyleName to the name of the image style that you created in the OSS console. 
$style = "style/yourCustomStyleName";

$options = array(
    OssClient::OSS_FILE_DOWNLOAD => $download_file,
    OssClient::OSS_PROCESS => $style);

// Save the processed image as example-new.jpg to your local computer. 
$ossClient->getObject($bucket, $object, $options);

// After the image is processed, you can delete the source image from the bucket if you no longer need the image. 
// $ossClient->deleteObject($bucket, $object);

    処理された画像を保存する

    デフォルトでは、IMGは処理済み画像を保存しません。 ImgSaveAs操作を呼び出して、ソースイメージが保存されているバケットにイメージを保存できます。

    次のサンプルコードは、処理されたイメージを保存する方法の例を示します。 

    <?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();
// 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 source object. Example: exampledir/exampleobject.jpg. Do not include the bucket name in the full path. 
$object = "exampledir/exampleobject.jpg";
// Specify the full path to which you want to save the processed image. Example: example-new.jpg. 
$save_object = "example-new.jpg";

function base64url_encode($data)
{
    return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}

$config = array(
        "provider" => $provider,
        "endpoint" => $endpoint,
        "signatureVersion" => OssClient::OSS_SIGNATURE_VERSION_V4,
        "region"=> "cn-hangzhou"
    );
    $ossClient = new OssClient($config);
// If the image that you want to process does not exist in the specified bucket, you must upload the image to the specified bucket. 
// $ossClient->uploadFile($bucket, $object, "D:\\localpath\\exampleobject.jpg");

// Resize the image to 100 × 100 pixels and rotate the image 90 degrees. 
$style = "image/resize,m_fixed,w_100,h_100/rotate,90";

$process = $style.
           '|sys/saveas'.
           ',o_'.base64url_encode($save_object).
           ',b_'.base64url_encode($bucket);

// Save the processed image as example-new.png to the current bucket. 
$result = $ossClient->processObject($bucket, $object, $process);
// Display the processing result. 
print($result);

    IMGパラメータを含む署名付きオブジェクトURLを生成する

    プライベートオブジェクトのURLに署名する必要があります。 署名付きURLの末尾にIMGパラメーターを直接追加することはできません。 プライベートオブジェクトを処理する場合は、署名にIMGパラメーターを追加します。 次のサンプルコードは、署名にIMGパラメーターを追加する方法の例を示しています。

    <?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();
// 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.jpg. Do not include the bucket name in the full path. 
$object = "exampledir/exampleobject.jpg";

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

// Generate a signed URL that includes IMG parameters. The validity period of the URL is 3,600 seconds. The signed URL can be directly used to access the image by using a browser. 
$timeout = 3600;

$options = array(
    // Resize the image to 100 x 100 pixels. 
    OssClient::OSS_PROCESS => "image/resize,m_fixed,h_100,w_100" );

$signedUrl = $ossClient->signUrl($bucket, $object, $timeout, "GET", $options);
print("rtmp url: \n" . $signedUrl);

    次のサンプルコードは、透かしパラメータを含む署名付きオブジェクトURLを生成する方法の例を示しています。

    <?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();
// 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.jpg. Do not include the bucket name in the full path. 
$object = "exampledir/exampleobject.jpg";

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

// Generate a signed URL that contains the watermark parameter. The validity period of the URL is 3,600 seconds. The signed URL can be directly used to access the image by using a browser. 
$timeout = 3600;

function base64url_encode($data)
{
    return rtrim(strtr(base64_encode($data), '+/', '-_'), '=');
}
// Specify the content of the watermark such as Hello World or specify the full path of the watermark image such as panda.jpg. 
// When you add a watermark image to the image, make sure that the watermark image is stored in the same bucket as the image. 
$content = "Hello World";
$string = base64url_encode($content);

$options = array(
    // Add the watermark to the image. 
    OssClient::OSS_PROCESS => "image/watermark,text_".$string
);

$signedUrl = $ossClient->signUrl($bucket, $object, $timeout, "GET", $options);
print("rtmp url: \n" . $signedUrl);