我使用openai/client-php。

require __DIR__ . '/vendor/autoload.php';

use OpenAI\Client;
use OpenAI\API\Request;

$yourApiKey = 'sk-fEpZ.......';
$client = new Client(new Request($yourApiKey));

function generateText($client, $model, $prompt, $length, $temperature = 0.5) {
    $response = $client->completions()->create(
        $model,
        [
            'prompt' => $prompt,
            'max_tokens' => $length,
            'temperature' => $temperature,
        ]
    );
    return $response['choices'][0]['text'];
}

$models = [
    'en' => 'text-davinci-002',
    'zh' => 'text-davinci-002',
    'de' => 'text-davinci-002',
    'fr' => 'text-davinci-002'
];

$languages = [
    'en' => 'English',
    'zh' => 'Chinese',
    'de' => 'German',
    'fr' => 'French'
];

$prompt = 'Why the sky is blue?:';

foreach ($models as $lang => $model) {
    $generatedText = generateText($client, $model, $prompt, 200);
    $generatedTitle = substr($generatedText, 0, 80);
    echo " {$languages[$lang]} Language:\n";
    echo "Title: $generatedTitle\n";
    echo "Text: $generatedText\n\n";
}

我有错误。
致命错误：未捕获的错误：在D：\OpenServer\domains\localhost\openai\test中找不到Class“OpenAI\API\Request”。#0 {main}抛出D：\OpenServer\domains\localhost\openai\test.php上线9