tencent cloud


Last updated: 2021-08-10 16:14:49


    • Welcome to Tencent Cloud Software Development Kit (SDK) 3.0, a companion tool for the TencentCloud API 3.0 platform. SDK 3.0 is unified and features the same SDK usage, API call methods, error codes, and returned packet formats for different programming languages.
    • This document describes how to use, debug, and connect to TencentCloud APIs with the SDK for PHP 3.0 as an example.
    • This version currently supports various Tencent Cloud products such as CVM, VPC, and CBS and will support more products in the future.

    Dependent Environment

    • PHP 5.6.33 or above.
    • Get the security credential, which consists of SecretId and SecretKey. SecretId is used to identify the API requester, while SecretKey is a key used for signature string encryption and authentication by the server. You can get them on the API Key Management page as shown below:

      Your security credential represents your account identity and granted permissions, which is equivalent to your login password. Do not disclose it to others.

    • Get the calling address (endpoint), which is generally in the format of *.tencentcloudapi.com and varies by product. For example, the endpoint of CVM is cvm.tencentcloudapi.com. For specific endpoints, please see the API documentation of the corresponding product .

    Installing SDK for PHP 3.0

    Installation through Composer is the recommended way to use the SDK for PHP. Composer is a dependency manager for PHP. For more information, please visit Composer official website.


    Composer requires PHP 5.3.2+ and above, and openssl needs to be enabled.

    Step 1. Install Composer

    • For Windows, go to Composer official website to download the installation package and install it.
    • For Unix, install it by running the following command on the command line:
      curl -sS https://getcomposer.org/installer | php
      sudo mv composer.phar /usr/local/bin/composer

    Step 2. Add a mirror source

    If you are in the Chinese mainland, you can use a Tencent Cloud mirror source to speed up the download by running the following command in the opened command window:

    composer config -g repos.packagist composer https://mirrors.tencent.com/composer/

    Step 3. Add dependencies

    In the opened command window, run the command to install the SDK (in the specified location). For example, to install in the C:\Users\···> directory, open the command window at the specified location and run the following command:

    composer require tencentcloud/tencentcloud-sdk-php

    Step 4. Add references

    Import the following code. Note: this example is for reference only. Composer will generate a vendor directory in the project root directory, whose actual absolute path is /path/to/ (if you perform this operation in the project root directory, you can omit the absolute path).

    require '/path/to/vendor/autoload.php';

    • If you only want to install the package of a certain product, you can use composer require tencentcloud/product name, such as composer require tencentcloud/cvm.

    Using SDK

    • We recommend you use API 3.0 Explorer, which provides various capabilities such as online call, signature verification, SDK code generation, and quick API search, greatly improving the ease of use of TencentCloud API 3.0 and SDK.
    • You can also refer to the examples in the examples directory in the SDK repository for more usage information.

    The following uses the instance querying API DescribeInstances as an example:

    require_once '/path/to/vendor/autoload.php';
    use TencentCloud\Cvm\V20170312\Models\DescribeInstancesRequest;
    use TencentCloud\Common\Exception\TencentCloudSDKException;
    use TencentCloud\Common\Credential;
    try {
        $cred = new Credential("secretId", "secretKey");
        $client = new CvmClient($cred, "ap-guangzhou");
        $req = new DescribeInstancesRequest();
        $resp = $client->DescribeInstances($req);
    catch(TencentCloudSDKException $e) {
        echo $e;

    More samples

    You can find more detailed samples in the examples directory in the GitHub repository.

    Relevant Configuration


    If there is a proxy in your environment, you need to set the system environment variable https_proxy; otherwise, it may not be called normally, and a connection timeout exception will be thrown. You can also use GuzzleHttp to proxy the configuration:

    $cred = new Credential("secretId", "secretKey");
    $httpProfile = new HttpProfile();
    $clientProfile = new ClientProfile();
    $client = new OcrClient($cred, 'ap-beijing', $this->clientProfile);


    Certificate issue


    If there is a problem with your PHP environment certificate, errors similar to cURL error 60: See http://curl.haxx.se/libcurl/c/libcurl-errors.html may occur, which can be solved as follows:

    1. Download the certificate file cacert.pem at https://curl.haxx.se/ca/cacert.pem and save it to the PHP installation path.
    2. Edit the php.ini file: delete the semicolon comment (;) before the curl.cainfo configuration item and set the value to the absolute path of the saved certificate file cacert.pem.
    3. Restart the services that depend on PHP.

    php_curl extension


    GuzzleHttp, which this SDK depends on, needs to have the php_curl extension enabled. Check whether the php.ini environment in your environment is enabled. For example, on Linux with PHP 7.1, for services hosted under Apache, you can open /etc/php/7.1/apache2/php.ini to see whether the extension=php_curl.dll configuration item has been commented. Please delete the comment before it and restart Apache.

    Web access exception


    The command is executed normally on the command line, but when it is executed on the web server, the following error is reported:

    cURL error 0: The cURL request was retried 3 times and did not succeed. The most likely reason for the failure is that cURL was unable to rewind the body of the request and subsequent retries resulted in the same error. Turn on the debug option to see what went wrong. See https://bugs.php.net/bug.php?id=47204 for more information. (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)

    This error may occur in different cases. You can run php -r "echo sys_get_temp_dir();" to print the absolute path of the default system temporary directory and set sys_temp_dir in php.ini to this value, and then check whether this error is fixed.

    Problem with installation through source code


    In order to satisfy the need for installation through source code, we previously put the dependent package files in the vendor directory. However, considering that incompatibility with Composer should not be caused, we had to forbid importing the vendor directory on GitHub, which resulted in the problem where the git clone command had to be used to get the vendor directory. This practice caused confusion for some users not familiar with GitHub. Therefore, starting from v3.0.188, we have temporarily removed the method of installation through source code, and Composer must be used to install the SDK and dependent packages.

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