PHP Extension

OpenAI (ChatGPT) Create Image

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Show how to send a POST to create an image. Gets the JSON response with URLs and then downloads images to files. 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/images/generations \
//   -H "Content-Type: application/json" \
//   -H "Authorization: Bearer $OPENAI_API_KEY" \
//   -d '{
//     "prompt": "A cute baby sea otter",
//     "n": 2,
//     "size": "1024x1024"
//   }'

// 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.

// {
//   "prompt": "A cute baby sea otter",
//   "n": 2,
//   "size": "1024x1024"
// }

$json = new CkJsonObject();
$json->UpdateString('prompt','A cute baby sea otter');
$json->UpdateInt('n',2);
$json->UpdateString('size','1024x1024');

// 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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');

$resp = new CkHttpResponse();
$success = $http->HttpJson('POST','https://api.openai.com/v1/images/generations',$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)

// {
//   "created": 1589478378,
//   "data": [
//     {
//       "url": "https://..."
//     },
//     {
//       "url": "https://..."
//     }
//   ]
// }

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

$sbLocalFilePath = new CkStringBuilder();

// Download each image..
$http->ClearHeaders();
$http->put_AuthToken('');

$created = $jResp->IntOf('created');
$i = 0;
$count_i = $jResp->SizeOfArray('data');
while ($i < $count_i) {
    $jResp->put_I($i);
    $url = $jResp->stringOf('data[i].url');

    $sbLocalFilePath->SetString('c:/aaworkarea/image_');
    $sbLocalFilePath->AppendInt($i + 1);
    $sbLocalFilePath->Append('.png');

    $success = $http->Download($url,$sbLocalFilePath->getAsString());
    if ($success == false) {
        print $http->lastErrorText() . "\n";
        exit;
    }

    $i = $i + 1;
}


?>