为什么当流参数设置为false时，OpenAI Chat GPT (GPT-3.5) API没有响应？

Question

您可以在下面的我的应用程序中看到 $prompt 值。当我输入此提示值时，chat GPT 不会给出结果。但这是因为参数中的 "stream" => false 。如果 "stream" => true，chat GPT 给出结果。

我的问题是为什么当 "stream" => false 时 chat GPT 不给出结果。以及如何做才能产生结果。

$API_KEY = "API_KEY_HERE";

$model = 'gpt-3.5-turbo';
$header = [
    "Authorization: Bearer " . $API_KEY,
    "Content-type: application/json",
];

$temperature = 0.6;
$frequency_penalty = 0;
$presence_penalty= 0;
$prompt = 'What can you help me with? For example: What do you suggest to keep me motivated?';
 

$messages = array(
    array(
        "role" => "system",
        "content" => "Your name is 'JOHN DOE'. I want you to act as a motivational coach. I will provide you with some information about someone's goals and challenges, and it will be your job to come up with strategies that can help this person achieve their goals. This could involve providing positive affirmations, giving helpful advice or suggesting activities they can do to reach their end goal. if you don't understand the question, don't think too much, tell the user to be more specific with more details"
        ),
    array(
        "role" => "assistant",
        "content" => "Hello, I'm JOHN DOE, and I'm a motivational coach who loves helping people find their drive and achieve their goals. With years of experience in coaching and personal development, I've developed a unique approach to motivation that combines mindset, energy, and action."
    ),
    array(
        "role" => "user",
        "content" => $prompt
    )
);
//Turbo model
$isTurbo = true;
$url = "https://api.openai.com/v1/chat/completions";
$params = json_encode([
    "messages" => $messages,
    "model" => $model,
    "temperature" => $temperature,
    "max_tokens" => 1024,
    "frequency_penalty" => $frequency_penalty,
    "presence_penalty" => $presence_penalty,
    "stream" => false
]);

$curl = curl_init($url);
$options = [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => $header,
    CURLOPT_POSTFIELDS => $params,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_SSL_VERIFYHOST => 0,
    CURLOPT_WRITEFUNCTION => function($curl, $data) {
        //echo $curl;
        $httpCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);

        if ($httpCode != 200) {
            $r = json_decode($data);
            echo 'data: {"error": "[ERROR]","message":"'.$r->error->message.'"}' . PHP_EOL;
        } else {
            $trimmed_data = trim($data); 
            if ($trimmed_data != '') {
                $response_array = json_decode($trimmed_data, true);
                $content = $response_array['choices'][0]['message']['content'];
                echo $content;
                ob_flush();
                flush();
            }
        }
        return strlen($data);
    },
];

curl_setopt_array($curl, $options);
$response = curl_exec($curl);

if ($response === false) {
    echo 'data: {"error": "[ERROR]","message":"'.curl_error($curl).'"}' . PHP_EOL;
}else{

}

Answer 1

如果设置 "stream" => false 则得不到响应的原因是，整个代码设计为当 Stream 参数设置为 true。

通过以下修改，响应将作为一个整体进行处理，无论 stream 参数的值如何。

试试这个：

$API_KEY = "API_KEY_HERE";

$model = 'gpt-3.5-turbo';
$header = [
    "Authorization: Bearer " . $API_KEY,
    "Content-type: application/json",
];

$temperature = 0.6;
$frequency_penalty = 0;
$presence_penalty= 0;
$prompt = 'What can you help me with? For example: What do you suggest to keep me motivated?';

$messages = array(
    array(
        "role" => "system",
        "content" => "Your name is 'JOHN DOE'. I want you to act as a motivational coach. I will provide you with some information about someone's goals and challenges, and it will be your job to come up with strategies that can help this person achieve their goals. This could involve providing positive affirmations, giving helpful advice or suggesting activities they can do to reach their end goal. if you don't understand the question, don't think too much, tell the user to be more specific with more details"
        ),
    array(
        "role" => "assistant",
        "content" => "Hello, I'm JOHN DOE, and I'm a motivational coach who loves helping people find their drive and achieve their goals. With years of experience in coaching and personal development, I've developed a unique approach to motivation that combines mindset, energy, and action."
    ),
    array(
        "role" => "user",
        "content" => $prompt
    )
);

$url = "https://api.openai.com/v1/chat/completions";

$params = json_encode([
    "messages" => $messages,
    "model" => $model,
    "temperature" => $temperature,
    "max_tokens" => 1024,
    "frequency_penalty" => $frequency_penalty,
    "presence_penalty" => $presence_penalty,
    "stream" => false
]);

$curl = curl_init($url);
$options = [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => $header,
    CURLOPT_POSTFIELDS => $params,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_SSL_VERIFYHOST => 0,
];

curl_setopt_array($curl, $options);
$response = curl_exec($curl);

if ($response === false) {
    echo 'data: {"error": "[ERROR]","message":"'.curl_error($curl).'"}' . PHP_EOL;
}else{
    $response_array = json_decode($response, true);
    $content = $response_array['choices'][0]['message']['content'];
    echo $content;
}