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<?php

/**

* Copyright 2018 Google Inc.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

// [START dialogflow_detect_intent_text]

namespace Google\Cloud\Samples\Dialogflow;

use Google\Cloud\Dialogflow\V2\SessionsClient;

use Google\Cloud\Dialogflow\V2\TextInput;

use Google\Cloud\Dialogflow\V2\QueryInput;

/**

* Returns the result of detect intent with texts as inputs.

* Using the same `session_id` between requests allows continuation

* of the conversation.

*/

function detect_intent_texts($projectId, $texts, $sessionId, $languageCode = 'en-US')

{

// new session

$sessionsClient = new SessionsClient();

$session = $sessionsClient->sessionName($projectId, $sessionId ?: uniqid());

printf('Session path: %s' . PHP_EOL, $session);

// query for each string in array

foreach ($texts as $text) {

// create text input

$textInput = new TextInput();

$textInput->setText($text);

$textInput->setLanguageCode($languageCode);

// create query input

$queryInput = new QueryInput();

$queryInput->setText($textInput);

// get response and relevant info

$response = $sessionsClient->detectIntent($session, $queryInput);

$queryResult = $response->getQueryResult();

$queryText = $queryResult->getQueryText();

$intent = $queryResult->getIntent();

$displayName = $intent->getDisplayName();

$confidence = $queryResult->getIntentDetectionConfidence();

$fulfilmentText = $queryResult->getFulfillmentText();

// output relevant info

print(str_repeat("=", 20) . PHP_EOL);

printf('Query text: %s' . PHP_EOL, $queryText);

printf('Detected intent: %s (confidence: %f)' . PHP_EOL, $displayName,

$confidence);

print(PHP_EOL);

printf('Fulfilment text: %s' . PHP_EOL, $fulfilmentText);

}

$sessionsClient->close();

}

// [END dialogflow_detect_intent_text]