Google Natural Language , classifyText and moderateText methods is not working for me

Google AI Studio
1

Hello . I am using Google Natural Language with PHP .

those methods are working -

  • analyzeSentiment,
  • analyzeEntities
  • analyzeSyntax
    *classifyText

it is not working -

  • moderateText
  • classifyText

do I have to give any other role for this service ?
I am giving those roles -

  • Auto Ml Editor
  • Auto Ml Predictor
  • Viewer

do I have to give any other role to use moderateText and classifyText?

I am sending my php function bellow -

public function moderateText(string $text): array
{
$accessToken = $this->getAccessToken();
if (!$accessToken) {
return [‘error’ => ‘Failed to retrieve access token.’];
}

    $api_url = 'https://language.googleapis.com/v1/documents:moderateText';

    // 2. Construct Request Body for Google Cloud Vision API
    $request_body = json_encode([
        'document' => [
            'type' => 'PLAIN_TEXT',
            'content' => $text
        ],
        'encodingType' => 'UTF8'
    ]);

    // 3. Create a Guzzle Client
    $client = new Client();

    // 4. Create a Guzzle Request
    $headers = [
        'Authorization' => 'Bearer ' . $accessToken,
        'Content-Type' => 'application/json',
    ];

    $request = new Request('POST', $api_url, $headers, $request_body);

    // 5. Send the Request
    try {
        $response = $client->send($request);
    } catch (\GuzzleHttp\Exception\GuzzleException $e) {
        return ['error' => "Guzzle Error: " . $e->getMessage()];
    }
    // 6. Get the Response Body
    $body = $response->getBody()->getContents();

    // 7. Parse the Response
    $responseData = json_decode($body, true);
    if (isset($responseData['moderationCategories'])) {
        foreach ($responseData['moderationCategories'] as $category) {
            echo "Category: " . $category['name'] . " (Confidence: " . $category['confidence'] . ")\n";
        }
    } else {
        echo "No harmful content detected.\n";
    }
}
2

I found the error .

instead -

$request_body = json_encode([
‘document’ => [
‘type’ => ‘PLAIN_TEXT’,
‘language’ => ‘pt-BR’,
‘content’ => $text
],
‘encodingType’ => ‘UTF8’
]);

use

$request_body = json_encode([
‘document’ => [
‘type’ => ‘PLAIN_TEXT’,
‘language’ => ‘pt-BR’,
‘content’ => $text
]
]);