使用 PHP 短代码的 ChatGPT API 请求返回通用消息

Question

我正在尝试使用 ChatGPT 通过短代码编写博客文章的各个部分。目标是添加 [prompt="write a section about bikes"] 并获取有关自行车的部分。

但是，我在 WordPress 网站的前端不断收到一般性回复，“您好，今天我能为您提供什么帮助？”

我知道我力不从心，但我觉得这应该行得通。

/**
 * ChatGPT Shortcode Handler
 */

function get_chatgpt_response($messages, $cache_reset) {
  $api_url = 'https://api.openai.com/v1/chat/completions';
  $api_key = 'My API Key';
  $hash = md5(serialize($messages));

  // Check if the response is cached in the WordPress database
  $cached_response = get_transient('chatgpt_response_' . $hash);
  if ($cached_response !== false && $cached_response !== '' && strpos($cached_response, '<p>') !== false && $cache_reset == 0) {
    echo "<!-- true -->";
    return $cached_response;
  }

  $data = array(
    'model' => 'gpt-3.5-turbo',
    'messages' => $messages,
    'max_tokens' => 1024,
    'temperature' => 0.7
  );
  $payload = json_encode($data);

  $ch = curl_init($api_url);
  curl_setopt($ch, CURLOPT_POST, 1);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Content-Type: application/json',
    'Authorization: Bearer '.$api_key
  ));
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

  $response = curl_exec($ch);
  curl_close($ch);

  $result = json_decode($response, true);
  $chatgpt_response = $result['choices'][0]['message']['content'];
  
  // Cache the response in the WordPress database for 1 hour
  set_transient('chatgpt_response_' . $hash, $chatgpt_response, HOUR_IN_SECONDS);
  
  return $chatgpt_response;
}

/**
 * ChatGPT Shortcode Handler
 */
function chatgpt_shortcode_handler($atts) {
    $atts = shortcode_atts(array(
        'prompt' => '',
    ), $atts, 'prompt');

    // Get the prompt value from the shortcode attribute
    $prompt = sanitize_text_field($atts['prompt']);

    // Generate a unique cache key based on the prompt
    $cache_key = 'chatgpt_' . md5($prompt);

    // Check if the response is already cached
    $cached_response = get_transient($cache_key);
    if ($cached_response !== false && $cached_response !== '' && strpos($cached_response, '<p>') !== false) {
        return $cached_response;
    }

    $messages = array(
        array(
            'role' => 'system',
            'content' => 'You: ' . $prompt,
        ),
    );

    // Set the cache reset flag to 0 to avoid resetting the cache
    $cache_reset = 0;

    // Make API request to ChatGPT and retrieve the generated content
    $chatgpt_response = get_chatgpt_response($messages, $cache_reset);

    // Cache the response in the WordPress database for 1 hour
    set_transient($cache_key, $chatgpt_response, HOUR_IN_SECONDS);

    // Return the generated content
    return wpautop($chatgpt_response);
}
add_shortcode('prompt', 'chatgpt_shortcode_handler');