Object Storage Service:Manage symbolic links (OSS SDK for PHP V2)

You can use the following code to create a symbolic link that points to the current version of the target object.

<?php

// Import the autoloader file to ensure that dependency libraries are loaded correctly.
require_once __DIR__ . '/../vendor/autoload.php';

use AlibabaCloud\Oss\V2 as Oss;

// Define the description of command line arguments.
$optsdesc = [
    "region" => ['help' => 'The region in which the bucket is located.', 'required' => True], // The region in which the bucket is located. (Required)
    "endpoint" => ['help' => 'The domain names that other services can use to access OSS.', 'required' => False], // The endpoint that can be used by other services to access OSS. (Optional)
    "bucket" => ['help' => 'The name of the bucket', 'required' => True], // The name of the bucket. (Required)
    "key" => ['help' => 'The name of the object', 'required' => True], // The name of the symbolic link. (Required)
    "symlink" => ['help' => 'The name of the symlink object', 'required' => True], // The name of the object file targeted by the symbolic link. (Required)
];

// Convert the argument description to the long option format required by getopt.
// Add a colon (:) after each argument to indicate that the argument requires a value.
$longopts = \array_map(function ($key) {
    return "$key:";
}, array_keys($optsdesc));

// Parse the command line arguments.
$options = getopt("", $longopts);

// Check whether required arguments are specified.
foreach ($optsdesc as $key => $value) {
    if ($value['required'] === True && empty($options[$key])) {
        $help = $value['help']; // Obtain the help information of the argument.
        echo "Error: the following arguments are required: --$key, $help" . PHP_EOL;
        exit(1); // If a required argument is not specified, exit the program.
    }
}

// Extract values from the parsed arguments.
$region = $options["region"]; // The region in which the bucket is located.
$bucket = $options["bucket"]; // The name of the bucket.
$key = $options["key"];       // The name of the symbolic link.
$symlink = $options["symlink"]; // The name of the object file targeted by the symbolic link.

// Load credentials from environment variables.
// Use EnvironmentVariableCredentialsProvider to read the Access Key ID and Access Key Secret from environment variables.
$credentialsProvider = new Oss\Credentials\EnvironmentVariableCredentialsProvider();

// Use the default configurations of the SDK.
$cfg = Oss\Config::loadDefault();
$cfg->setCredentialsProvider($credentialsProvider); // Set the credential provider.
$cfg->setRegion($region); // Set the region in which the bucket is located.
if (isset($options["endpoint"])) {
    $cfg->setEndpoint($options["endpoint"]); // If an endpoint is provided, set the endpoint.
}

// Create an OSS client instance.
$client = new Oss\Client($cfg);

// Create a PutSymlinkRequest object to create a symbolic link.
$request = new Oss\Models\PutSymlinkRequest(
    bucket: $bucket,
    key: $key,  // The name of the symbolic link.
    target: $symlink ,// The name of the object file targeted by the symbolic link.
);

// Execute the operation to create the symbolic link.
$result = $client->putSymlink($request);

// Print the result of creating the symbolic link.
printf(
    'status code:' . $result->statusCode . PHP_EOL . // The HTTP status code. For example, 200 indicates that the operation is successful.
    'request id:' . $result->requestId . PHP_EOL .   // The request ID, which is used for debugging or tracking requests.
    'result:' . var_export($result, true) . PHP_EOL  // The detailed result of creating the symbolic link.
);

You can use the following code to retrieve a symbolic link.

<?php

// Import the autoloader file to ensure that dependency libraries are loaded correctly.
require_once __DIR__ . '/../vendor/autoload.php';

use AlibabaCloud\Oss\V2 as Oss;

// Define the description of command line arguments.
$optsdesc = [
    "region" => ['help' => 'The region in which the bucket is located.', 'required' => True], // The region in which the bucket is located. (Required)
    "endpoint" => ['help' => 'The domain names that other services can use to access OSS.', 'required' => False], // The endpoint that can be used by other services to access OSS. (Optional)
    "bucket" => ['help' => 'The name of the bucket', 'required' => True], // The name of the bucket. (Required)
    "key" => ['help' => 'The name of the object', 'required' => True], // The name of the symbolic link. (Required)
];

// Convert the argument description to the long option format required by getopt.
// Add a colon (:) after each argument to indicate that the argument requires a value.
$longopts = \array_map(function ($key) {
    return "$key:";
}, array_keys($optsdesc));

// Parse the command line arguments.
$options = getopt("", $longopts);

// Check whether required arguments are specified.
foreach ($optsdesc as $key => $value) {
    if ($value['required'] === True && empty($options[$key])) {
        $help = $value['help']; // Obtain the help information of the argument.
        echo "Error: the following arguments are required: --$key, $help" . PHP_EOL;
        exit(1); // If a required argument is not specified, exit the program.
    }
}

// Extract values from the parsed arguments.
$region = $options["region"]; // The region in which the bucket is located.
$bucket = $options["bucket"]; // The name of the bucket.
$key = $options["key"];       // The name of the symbolic link.

// Load credentials from environment variables.
// Use EnvironmentVariableCredentialsProvider to read the Access Key ID and Access Key Secret from environment variables.
$credentialsProvider = new Oss\Credentials\EnvironmentVariableCredentialsProvider();

// Use the default configurations of the SDK.
$cfg = Oss\Config::loadDefault();
$cfg->setCredentialsProvider($credentialsProvider); // Set the credential provider.
$cfg->setRegion($region); // Set the region in which the bucket is located.
if (isset($options["endpoint"])) {
    $cfg->setEndpoint($options["endpoint"]); // If an endpoint is provided, set the endpoint.
}

// Create an OSS client instance.
$client = new Oss\Client($cfg);

// Create a GetSymlinkRequest object to obtain the target object of the symbolic link.
$request = new Oss\Models\GetSymlinkRequest(
    bucket: $bucket,
    key: $key,
    versionId: "yourVersionId", // Specify the actual version ID.
);

// Execute the operation to obtain the symbolic link.
$result = $client->getSymlink($request);

// Print the result of obtaining the symbolic link.
printf(
    'status code:' . $result->statusCode . PHP_EOL . // The HTTP status code. For example, 200 indicates that the operation is successful.
    'request id:' . $result->requestId . PHP_EOL .   // The request ID, which is used for debugging or tracking requests.
    'result:' . var_export($result, true) . PHP_EOL  // The detailed result of the obtained symbolic link.
);