PHP Extension

OpenAI (ChatGPT) Create Chat Completion

See more OpenAI ChatGPT Examples

Shows how to create a model response for a given chat conversation. PHP Extension

<?php

include("chilkat.php");

$success = false;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$http = new CkHttp();

// Implements the following CURL command:

// curl https://api.openai.com/v1/chat/completions \
//   -H "Content-Type: application/json" \
//   -H "Authorization: Bearer $OPENAI_API_KEY" \
//   -d '{
//     "model": "gpt-3.5-turbo",
//     "messages": [{"role": "user", "content": "Hello!"}]
//   }'

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "model": "gpt-3.5-turbo",
//   "messages": [
//     {
//       "role": "user",
//       "content": "Hello!"
//     }
//   ]
// }

$json = new CkJsonObject();
$json->UpdateString('model','gpt-3.5-turbo');
$json->UpdateString('messages[0].role','user');
$json->UpdateString('messages[0].content','Hello!');

// Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
// This is NOT a real key.  Change the "sk-vi...." to your own key.
$http->put_AuthToken('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');
$http->SetRequestHeader('Content-Type','application/json');

$resp = new CkHttpResponse();
$success = $http->HttpJson('POST','https://api.openai.com/v1/chat/completions',$json,'application/json',$resp);
if ($success == false) {
    print $http->lastErrorText() . "\n";
    exit;
}

$sbResponseBody = new CkStringBuilder();
$resp->GetBodySb($sbResponseBody);

$jResp = new CkJsonObject();
$jResp->LoadSb($sbResponseBody);
$jResp->put_EmitCompact(false);

print 'Response Body:' . "\n";
print $jResp->emit() . "\n";

$respStatusCode = $resp->get_StatusCode();
print 'Response Status Code = ' . $respStatusCode . "\n";
if ($respStatusCode >= 400) {
    print 'Response Header:' . "\n";
    print $resp->header() . "\n";
    print 'Failed.' . "\n";
    exit;
}

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "id": "chatcmpl-123",
//   "object": "chat.completion",
//   "created": 1677652288,
//   "choices": [
//     {
//       "index": 0,
//       "message": {
//         "role": "assistant",
//         "content": "\n\nHello there, how may I assist you today?"
//       },
//       "finish_reason": "stop"
//     }
//   ],
//   "usage": {
//     "prompt_tokens": 9,
//     "completion_tokens": 12,
//     "total_tokens": 21
//   }
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

$id = $jResp->stringOf('id');
$v_object = $jResp->stringOf('object');
$created = $jResp->IntOf('created');
$Prompt_tokens = $jResp->IntOf('usage.prompt_tokens');
$Completion_tokens = $jResp->IntOf('usage.completion_tokens');
$Total_tokens = $jResp->IntOf('usage.total_tokens');
$i = 0;
$count_i = $jResp->SizeOfArray('choices');
while ($i < $count_i) {
    $jResp->put_I($i);
    $index = $jResp->IntOf('choices[i].index');
    $Role = $jResp->stringOf('choices[i].message.role');
    $Content = $jResp->stringOf('choices[i].message.content');
    $finish_reason = $jResp->stringOf('choices[i].finish_reason');
    $i = $i + 1;
}


?>