deepseek---腾讯云API接入

deepseek关闭了接口充值，所以要用deepseek只能用第三方接口，另外就是第三方接口相对比较便宜。而且像腾讯云，先送100万Token，就还是用腾讯云接口来开发。

开发接口文档：

https://cloud.tencent.com/document/product/1772/115969

我用的是PHP开发，没有示例，但是有cURL请求示例：

curl https://api.lkeap.cloud.tencent.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer sk-xxxxxxxxxxx" \
-d '{
  "model": "deepseek-r1",
  "messages": [
        {
            "role": "user",
            "content": "你好"
        }
    ],
  "stream": false
}'

这就很简单了：

<?php

$url = 'https://api.lkeap.cloud.tencent.com/v1/chat/completions';
$key = 'xxxxxxxxxxx';
$question = '你是谁？';

// 准备请求数据
$data = [
    'model' => 'deepseek-r1',
    'messages' => [
        [
          'role' => 'user',
          'content' => $question
        ]
    ],
    'stream' => false,
    'max_tokens' => 2048,
    'temperature' => 0.7,
    'top_p' => 0.7,
    'top_k' => 50,
    'frequency_penalty' => 0.5,
    'n' => 1,
    'response_format' => [
        'type' => 'text'
    ]
];

// 准备 cURL 请求
$ch = curl_init($url);
curl_setopt_array($ch, [
  CURLOPT_POST => true,
  CURLOPT_POSTFIELDS => json_encode($data),
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => [
      'Content-Type: application/json',
      'Authorization: Bearer ' . $key
  ],
  CURLOPT_WRITEFUNCTION => function($ch, $data) {
      echo $data;
      return strlen($data);
  }
]);

// 发送请求并处理响应
$handle = curl_exec($ch);
var_dump($handle);
if (curl_errno($ch)) {
  var_dump(curl_error($ch));
}

就完事儿了。

略微出手优化一下代码：

<?php
class DeepSeekChat {
    private $apiUrl = 'https://api.lkeap.cloud.tencent.com/v1/chat/completions';
    private $apiKey;  // 从环境变量获取‌:ml-citation{ref="1,3" data="citationList"}
    private $logFile = 'conversation.log';

    public function __construct() {
        $this->apiKey = getenv('DEEPSEEK_API_KEY');
        if (!file_exists($this->logFile)) {
            touch($this->logFile);
        }
    }

    public function sendMessage($message, $history = []) {
        $messages = array_merge(
            [['role' => 'system', 'content' => '你是有道AI助手']],
            $history,
            [['role' => 'user', 'content' => $message]]
        );

        $postData = [
            'model' => 'deepseek-r1',
            'messages' => $messages,
            'temperature' => 1,
            'max_tokens' => 100,
            'stream' => false
        ];

        return $this->executeRequest($postData);
    }

    private function executeRequest($data) {
        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => $this->apiUrl,
            CURLOPT_HTTPHEADER => [
                'Content-Type: application/json',
                'Authorization: Bearer ' . $this->apiKey
            ],
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => json_encode($data),
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_SSL_VERIFYPEER => true  // 生产环境强制验证‌:ml-citation{ref="3,5" data="citationList"}
        ]);

        $response = curl_exec($ch);
        $this->logConversation($data, $response);

        if (curl_errno($ch)) {
            throw new Exception('API请求失败: ' . curl_error($ch));
        }

        return $response;
        // return $this->parseResponse($response);
    }

    private function parseResponse($response) {
        $result = json_decode($response, true);
        if (isset($result['choices']['message']['content'])) {
            return $result['choices']['message']['content'];
        }
        throw new Exception('API响应解析失败');
    }

    private function logConversation($request, $response) {
        $logEntry = json_encode([
            'timestamp' => date('Y-m-d H:i:s'),
            'request' => $request,
            'response' => json_decode($response, true)
        ]) . PHP_EOL;
        file_put_contents($this->logFile, $logEntry, FILE_APPEND);
    }
}
echo '123456789';
// 使用示例
$chat = new DeepSeekChat();
try {
    $reply = $chat->sendMessage("PHP如何接入DeepSeek?");
    echo "AI回复: " . $reply;
} catch (Exception $e) {
    echo "错误: " . $e->getMessage();
}