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<?php
class DeepSeekChat {
private $url = 'https://api.siliconflow.cn/v1/chat/completions';
private $apiKey = 'YOUR_API_KEY'; // 替换为你的 API Key
private $logFile = 'conversation.txt';
public function __construct() {
// 确保日志文件存在且可写
if (!file_exists($this->logFile)) {
touch($this->logFile);
}
}
private function saveToFile($content, $isQuestion = false) {
$timestamp = date('Y-m-d H:i:s');
$text = $isQuestion
? "\n[$timestamp] Question:\n$content\n\n[$timestamp] Answer:\n"
: $content;
file_put_contents($this->logFile, $text, FILE_APPEND);
}
private function processStreamingResponse($handle) {
$buffer = '';
while (!feof($handle)) {
$chunk = fread($handle, 1024);
$buffer .= $chunk;
// 处理缓冲区中的每一行
while (($pos = strpos($buffer, "\n")) !== false) {
$line = substr($buffer, 0, $pos);
$buffer = substr($buffer, $pos + 1);
if (strlen(trim($line)) > 0) {
if (strpos($line, 'data: ') === 0) {
$data = substr($line, 6); // 移除 "data: " 前缀
if ($data === '[DONE]') {
continue;
}
$json = json_decode($data, true);
if ($json && isset($json['choices'][0]['delta']['content'])) {
$content = $json['choices'][0]['delta']['content'];
echo $content;
flush();
$this->saveToFile($content);
}
}
}
}
}
}
public function chat() {
while (true) {
echo "\n请输入您的问题 (输入 q 退出): ";
$question = trim(fgets(STDIN));
if ($question === 'q') {
echo "程序已退出\n";
break;
}
// 保存问题
$this->saveToFile($question, true);
// 准备请求数据
$data = [
'model' => 'deepseek-ai/DeepSeek-V3',
'messages' => [
[
'role' => 'user',
'content' => $question
]
],
'stream' => true,
'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
$ch = curl_init($this->url);
curl_setopt_array($ch, [
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => json_encode($data),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_HTTPHEADER => [
'Content-Type: application/json',
'Authorization: Bearer ' . $this->apiKey
],
CURLOPT_WRITEFUNCTION => function($ch, $data) {
echo $data;
return strlen($data);
}
]);
try {
// 发送请求并处理响应
$handle = curl_exec($ch);
if (curl_errno($ch)) {
throw new Exception(curl_error($ch));
}
// 添加分隔符
echo "\n----------------------------------------\n";
$this->saveToFile("\n----------------------------------------\n");
} catch (Exception $e) {
$error_msg = "请求错误: " . $e->getMessage() . "\n";
echo $error_msg;
$this->saveToFile($error_msg);
} finally {
curl_close($ch);
}
}
}
}
// 运行程序
$chatbot = new DeepSeekChat();
$chatbot->chat();
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