├── ChatGPT.php
├── README.md
└── index.php


/ChatGPT.php:
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  1 | <!-- Simple ChatGPT Class that enables both text and image prompt
  2 | to use this class in another file just import it and call one of the 2 functions createTextRequest() or generateImage() with your prompt (or options)
  3 | 
  4 | Code Example:
  5 | 
  6 | include_once('ChatGPT.php'); // include class from folder
  7 | $ai = new ChatGPT(); // initialize class object
  8 | echo $ai->generateImage('a cat on a post lamp')['data'] ?? 'ERROR!'; // print the image URL or error text
  9 | echo $ai->createTextRequest('what is the weather in Romania?')['data'] ?? 'ERROR!'; // print the text response or error text -->
 10 | 
 11 | 
 12 | <?php
 13 | class ChatGPT
 14 | {
 15 |     private $API_KEY = "ADD_YOUR_API_KEY_HERE";
 16 |     private $textURL = "https://api.openai.com/v1/completions";
 17 |     private $imageURL = "https://api.openai.com/v1/images/generations";
 18 | 
 19 |     public $curl;
 20 | 
 21 |     public function __construct()
 22 |     {
 23 |         $this->curl = curl_init();
 24 |     }
 25 | 
 26 |     public function initialize($requestType = "text" || "image")
 27 |     {
 28 |         $this->curl = curl_init();
 29 | 
 30 |         if ($requestType === 'image')
 31 |             curl_setopt($this->curl, CURLOPT_URL, $this->imageURL);
 32 |         if ($requestType === 'text')
 33 |             curl_setopt($this->curl, CURLOPT_URL, $this->textURL);
 34 | 
 35 |         curl_setopt($this->curl, CURLOPT_RETURNTRANSFER, true);
 36 |         curl_setopt($this->curl, CURLOPT_POST, true);
 37 | 
 38 |         $headers = array(
 39 |             "Content-Type: application/json",
 40 |             "Authorization: Bearer $this->API_KEY"
 41 |         );
 42 | 
 43 |         curl_setopt($this->curl, CURLOPT_HTTPHEADER, $headers);
 44 |     }
 45 | 
 46 |     /**
 47 |      * Generates a text response based on the given prompt using the specified parameters.
 48 |      *
 49 |      * @param string $prompt The prompt for generating the text response.
 50 |      * @param string $model The GPT-3 model to use for text generation.
 51 |      * @param float $temperature The temperature parameter for controlling randomness (default: 0.7).
 52 |      * @param int $maxTokens The maximum number of tokens in the generated text (default: 1000).
 53 |      * @return array An array containing 'data' and 'error' keys, representing the generated text and any errors.
 54 |      */
 55 |     public function createTextRequest($prompt, $model = 'text-davinci-003', $temperature = 0.7, $maxTokens = 1000)
 56 |     {
 57 |         curl_reset($this->curl);
 58 |         $this->initialize('text');
 59 | 
 60 |         $data["model"] = $model;
 61 |         $data["prompt"] = $prompt;
 62 |         $data["temperature"] = $temperature;
 63 |         $data["max_tokens"] = $maxTokens;
 64 | 
 65 |         curl_setopt($this->curl, CURLOPT_POSTFIELDS, json_encode($data));
 66 | 
 67 |         $response = curl_exec($this->curl);
 68 |         $response = json_decode($response, true);
 69 | 
 70 |         $output['data'] = $response['choices'][0]['text'] ?? null;
 71 |         $output['error'] = $response['error']['code'] ?? null;
 72 |         return $output;
 73 |     }
 74 | 
 75 |     /**
 76 |      * Generates an image URL based on the given prompt and parameters.
 77 |      *
 78 |      * @param string $prompt The prompt for generating the image URL.
 79 |      * @param string $imageSize The desired image size (default: '512x512').
 80 |      * @param int $numberOfImages The number of images to generate (default: 1).
 81 |      * @return array An array containing ['data'] and ['error'] keys, representing the generated image URL and any errors.
 82 |      */
 83 |     public function generateImage($prompt, $imageSize = '512x512', $numberOfImages = 1)
 84 |     {
 85 |         curl_reset($this->curl);
 86 |         $this->initialize('image');
 87 | 
 88 |         $data["prompt"] = $prompt;
 89 |         $data["n"] = $numberOfImages;
 90 |         $data["size"] = $imageSize;
 91 | 
 92 |         curl_setopt($this->curl, CURLOPT_POSTFIELDS, json_encode($data));
 93 | 
 94 |         $response = curl_exec($this->curl);
 95 |         $response = json_decode($response, true);
 96 | 
 97 |         $output['data'] = $response['data'][0]['url'] ?? null;
 98 |         $output['error'] =  $response['error']['code'] ?? null;
 99 |         return $output;
100 |     }
101 | }
102 | 


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/README.md:
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 1 | # PHP-ChatGPT (OpenAI) connection
 2 | The `index.php` is a simple .php file to connect to OpenAi's API and prompt a text request using `cUrl()`. <br>
 3 | OPTIONAL: You can use the `ChatGPT.php` class to create both **image** and **text** request with the help of OpenAi's API. More details in comments. <br>
 4 | 
 5 | *This is the simplest and beginner-friendly method to connect to ChatGPT API without any need of library*
 6 | 
 7 | ## API_KEY:
 8 | Generate an API KEY from https://beta.openai.com/account/api-keys and paste into the code.
 9 | 
10 | 
11 | ## Optional Parameters
12 | Modify the prompt to fit your own needs.
13 | You can add optional parameters to the class object function calls: 
14 | * `createTextRequest("What's the best job?", 'text-davinci-003', 0.9, 300) // prompt, model, temperature, max_tokens`
15 | * `generateImage("Frog on a frozen lake", '1080x1080', 2) // prompt, imageSize, numberOfImages`
16 | 


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/index.php:
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 1 | <?php
 2 | 
 3 | $curl = curl_init();    // create cURL session
 4 | 
 5 | $API_KEY = "ADD_YOUR_API_KEY_HERE"; // login to https://beta.openai.com/account/api-keys and create an API KEY
 6 | 
 7 | $url = "https://api.openai.com/v1/completions";
 8 | curl_setopt($curl, CURLOPT_URL, $url);
 9 | curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
10 | curl_setopt($curl, CURLOPT_POST, true);
11 | 
12 | $headers = array( // cUrl headers (-H)
13 |     "Content-Type: application/json",
14 |     "Authorization: Bearer $API_KEY"
15 | );
16 | 
17 | curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
18 | 
19 | $data = array( // cUrl data
20 |     "model" => "text-davinci-003", // choose your designated model
21 |     "prompt" => "What's the weather in Vienna today? only metrics", // choose your prompt (what you ask the AI)
22 |     "temperature" => 0.5,   // temperature = creativity (higher value => greater creativity in your promts)
23 |     "max_tokens" => 100     // max amount of tokens to use per request
24 | );
25 | curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));
26 | 
27 | $response = curl_exec($curl);               // execute cURL
28 | $response = json_decode($response, true);   // extract json from response
29 | 
30 | $generated_text = $response['choices'][0]['text'];  // extract first response from json
31 | 
32 | echo $generated_text;   // output response
33 | 
34 | curl_close($curl);      // close cURL session
35 | 


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