我正在尝试执行对新发布的gpt-3.5-turbo模型的API调用，并具有以下代码，该代码应该向API发送查询（通过$query变量），然后从API提取响应消息的内容。
但是我每次打电话都得到空的回应。你知道我做错了什么吗？

  1. $ch = curl_init();
  3. $query = "What is the capital city of England?";
  5. $url = 'https://api.openai.com/v1/chat/completions';
  7. $api_key = 'sk-**************************************';
  9. $post_fields = [
  10. "model" => "gpt-3.5-turbo",
  11. "messages" => ["role" => "user","content" => $query],
  12. "max_tokens" => 500,
  13. "temperature" => 0.8
  14. ];
  16. $header = [
  17. 'Content-Type: application/json',
  18. 'Authorization: Bearer ' . $api_key
  19. ];
  21. curl_setopt($ch, CURLOPT_URL, $url);
  22. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  23. curl_setopt($ch, CURLOPT_POST, 1);
  24. curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($post_fields));
  25. curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  27. $result = curl_exec($ch);
  28. if (curl_errno($ch)) {
  29. echo 'Error: ' . curl_error($ch);
  30. }
  31. curl_close($ch);
  33. $response = json_decode($result);
  35. $response = $response->choices[0]->message[0]->content;

 

您得到NULL响应的原因是JSON主体无法解析。
您会得到以下错误："We
could not parse the JSON body of your request. (HINT: This likely means
you aren't using your HTTP library correctly. The OpenAI API expects a
JSON payload, but what was sent was not valid JSON. If you have trouble
figuring out how to fix this, please send an email to support@openai.com
and include any relevant code you'd like help with.)".
改变这个...

  1. $post_fields = [
  2. "model" => "gpt-3.5-turbo",
  3. "messages" => ["role" => "user","content" => $query],
  4. "max_tokens" => 12,
  5. "temperature" => 0
  6. ];

......到这个。

  1. $post_fields = array(
  2. "model" => "gpt-3.5-turbo",
  3. "messages" => array(
  4. array(
  5. "role" => "user",
  6. "content" => $query
  7. )
  8. ),
  9. "max_tokens" => 12,
  10. "temperature" => 0
  11. );

工作示例

如果您在CMD中运行php test.php，OpenAI API将返回以下完成：
字符串（40）"
英国的首都是伦敦。"

    • 测试. php**
  1. <?php
  2. $ch = curl_init();
  4. $url = 'https://api.openai.com/v1/chat/completions';
  6. $api_key = 'sk-xxxxxxxxxxxxxxxxxxxx';
  8. $query = 'What is the capital city of England?';
  10. $post_fields = array(
  11. "model" => "gpt-3.5-turbo",
  12. "messages" => array(
  13. array(
  14. "role" => "user",
  15. "content" => $query
  16. )
  17. ),
  18. "max_tokens" => 12,
  19. "temperature" => 0
  20. );
  22. $header = [
  23. 'Content-Type: application/json',
  24. 'Authorization: Bearer ' . $api_key
  25. ];
  27. curl_setopt($ch, CURLOPT_URL, $url);
  28. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  29. curl_setopt($ch, CURLOPT_POST, 1);
  30. curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($post_fields));
  31. curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
  33. $result = curl_exec($ch);
  34. if (curl_errno($ch)) {
  35. echo 'Error: ' . curl_error($ch);
  36. }
  37. curl_close($ch);
  39. $response = json_decode($result);
  40. var_dump($response->choices[0]->message->content);
  41. ?>
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