tencent cloud

<?php
require_once '/path/to/vendor/autoload.php';
// Import the client of the corresponding product module
use TencentCloud\\Cvm\\V20170312\\CvmClient;
// Import the `Request` class corresponding to the request API
use TencentCloud\\Cvm\\V20170312\\Models\\DescribeInstancesRequest;
use TencentCloud\\Cvm\\V20170312\\Models\\Filter;
use TencentCloud\\Common\\Exception\\TencentCloudSDKException;
use TencentCloud\\Common\\Credential;
// Import the optional configuration classes
use TencentCloud\\Common\\Profile\\ClientProfile;
use TencentCloud\\Common\\Profile\\HttpProfile;

try {
     // Instantiate a certificate object. The Tencent Cloud account `secretId` and `secretKey` need to be passed in as input parameters
     $cred = new Credential("secretId", "secretKey");

    // (Optional) Instantiate an HTTP option
     $httpProfile = new HttpProfile();
     // Configure the proxy
     // $httpProfile->setProxy("https://ip:port");
     $httpProfile->setReqMethod("GET");  // GET request (POST request is used by default)
     $httpProfile->setReqTimeout(30);    // Specify the request timeout value in seconds. The default value is 60s
     $httpProfile->setEndpoint("cvm.ap-shanghai.tencentcloudapi.com");  // Specify the endpoint. If you do not specify the endpoint, nearby access is enabled by default

    // Instantiate a client option (optional; skip if no special requirements are present)
     $clientProfile = new ClientProfile();
     $clientProfile->setSignMethod("TC3-HMAC-SHA256");  // Specify the signature algorithm. The default value is `HmacSHA256`
     $clientProfile->setHttpProfile($httpProfile);

    // Instantiate the client object of the requested product (with CVM as an example). `clientProfile` is optional
     $client = new CvmClient($cred, "ap-shanghai", $clientProfile);

    // Instantiate a CVM instance information query request object. Each API corresponds to a request object
     $req = new DescribeInstancesRequest();

    // Populate the request parameters. Here, the member variables of the request object are the input parameters of the corresponding API
     // You can view the definition of the request parameters in the API documentation at the official website or by redirecting to the definition of the request object
     $respFilter = new Filter();  // Create a `Filter` object to query CVM instances in the `zone` dimension
     $respFilter->Name = "zone";
     $respFilter->Values = ["ap-shanghai-1", "ap-shanghai-2"];
     $req->Filters = [$respFilter];  // `Filters` is a list of `Filter` objects

    // Initialize the request by calling the `DescribeInstances` method on the client object. Note: the request method name corresponds to the request object
     // The returned `resp` is an instance of the `DescribeInstancesResponse` class which corresponds to the request object
     $resp = $client->DescribeInstances($req);

    // A string return packet in JSON format is output
     print_r($resp->toJsonString());

    // You can also take a single value
     // You can view the definition of the return field in the API documentation at the official website or by redirecting to the definition of the response object
     print_r($resp->TotalCount);
}
catch(TencentCloudSDKException $e) {
     echo $e;
}