How to connect PHP to Tencent Cloud CDN refresh interface to implement cache refresh function

How PHP interfaces with Tencent Cloud CDN refresh interface to implement cache refresh function

Tencent Cloud CDN (Content Delivery Network) is a globally distributed media acceleration service based on Tencent Cloud Server, which can provide fast and stable web pages, Distribution of pictures, audio and video and other content. In order to ensure that the content is updated in time, we need to implement the cache refresh function. This article will introduce how to use PHP to connect to the Tencent Cloud CDN refresh interface to implement the cache refresh function.

First, we need to obtain the API key and request address of the refresh interface in the Tencent Cloud CDN console. After logging in to the Tencent Cloud CDN console, select "Domain Name Management" in the left navigation bar, then select the domain name to be operated, click the "Preheat/Refresh" tab, and then click "View API Key" in the upper right corner button to get the API key and request address.

Next, we can write the corresponding code in the PHP file to implement the function of connecting to the Tencent Cloud CDN refresh interface. The code example is as follows:

<?php

// 腾讯云CDN刷新接口地址
$url = 'https://cdn.api.qcloud.com/v2/index.php';

// 刷新接口的API密钥
$secretId = 'YourSecretId';
$secretKey = 'YourSecretKey';

// 待刷新的URL列表，多个URL用逗号分隔
$urls = 'http://www.example.com/index.html,http://www.example.com/images/image.jpg';

// 时间戳
$timestamp = time();

// 参数列表
$params = array(
    'Action' => 'RefreshCdnUrl', // 刷新接口的操作名称
    'SecretId' => $secretId, // API密钥ID
    'Timestamp' => $timestamp, // 时间戳
    'Nonce' => rand(10000, 99999), // 随机数
    'urls.0' => $urls, // 待刷新的URL列表
);

// 参数排序
ksort($params);

// 生成签名
$plainText = http_build_query($params);
$sign = base64_encode(hash_hmac('sha1', $plainText, $secretKey, true));

// 添加签名到参数列表
$params['Signature'] = $sign;

// 发送请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 解析响应
$result = json_decode($response, true);

// 输出结果
var_dump($result);

?>

In the code, we first define parameters such as the Tencent Cloud CDN refresh interface address, API key, and URL list to be refreshed. Then, use the corresponding parameters to generate a signature, and send a POST request to the refresh interface through curl to obtain the response result and parse it. Finally, we can refresh the results via var_dump output.

It should be noted that the API keys (SecretId and SecretKey) in the sample code need to be replaced with the keys you obtained in the Tencent Cloud CDN console.

Through the above steps, we can use PHP to connect to the Tencent Cloud CDN refresh interface to realize the cache refresh function. I hope this article can help you understand and use related technologies.

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