PHP如何配置openai返回数据，保持流式输出，可以分段加载

可以使用OpenAI API的stream参数来实现流式输出，并且可以使用max_tokens参数控制每次返回数据的长度。 以下是一个示例代码，演示如何使用OpenAI API来实现流式输出并分段加载：

1. <?php // 请求OpenAI接口获取stream数据，并转发到H5页面端
   
2. $openAIUrl = 'https://api.openai.com/v1/engines/davinci-codex/completions'; $headers = array( 'Content-Type: application/json', 'Authorization: Bearer <YOUR_API_KEY>' );
   
3. $data = array( 'prompt' => 'Hello, world!', 'max_tokens' => 5, 'temperature' => 0.7 );
   
4. $ch = curl_init();
   
5. curl_setopt($ch, CURLOPT_URL, $openAIUrl);
   
6. curl_setopt($ch, CURLOPT_POST, true);
   
7. curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
   
8. curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   
9. curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
   
10. curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    
11. $output = fopen('php://output', 'w');
    
12. curl_setopt($ch, CURLOPT_WRITEFUNCTION, function ($ch, $chunk) use ($output) { fwrite($output, $chunk);
    
13. return strlen($chunk); });
    
14. curl_exec($ch);
    
15. fclose($output); // 将stream数据转发给H5页面端
    
16. header('Content-Type: text/event-stream');
    
17. header('Cache-Control: no-cache');
    
18. header('Connection: keep-alive');
    
19. header('Access-Control-Allow-Origin: *');
    
20. fpassthru($output);
    

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参考教程

• https://blog.csdn.net/Climbman/article/details/129920946
• https://www.coder.work/article/8058412