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<?php

/**

* Copyright 2016 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.

*/

/**

* For instructions on how to run the full sample:

*

* @see https://github.com/GoogleCloudPlatform/php-docs-samples/tree/master/speech/README.md

*/

// Include Google Cloud dependendencies using Composer

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

if (count($argv) != 2) {

return print("Usage: php streaming_recognize.php AUDIO_FILE\n");

}

list($_, $audioFile) = $argv;

# [START speech_transcribe_streaming]

use Google\Cloud\Speech\V1\SpeechClient;

use Google\Cloud\Speech\V1\RecognitionConfig;

use Google\Cloud\Speech\V1\StreamingRecognitionConfig;

use Google\Cloud\Speech\V1\StreamingRecognizeRequest;

use Google\Cloud\Speech\V1\RecognitionConfig\AudioEncoding;

/** Uncomment and populate these variables in your code */

// $audioFile = 'path to an audio file';

// change these variables if necessary

$encoding = AudioEncoding::LINEAR16;

$sampleRateHertz = 32000;

$languageCode = 'en-US';

// the gRPC extension is required for streaming

if (!extension_loaded('grpc')) {

throw new \Exception('Install the grpc extension (pecl install grpc)');

}

$speechClient = new SpeechClient();

try {

$config = (new RecognitionConfig())

->setEncoding($encoding)

->setSampleRateHertz($sampleRateHertz)

->setLanguageCode($languageCode);

$strmConfig = new StreamingRecognitionConfig();

$strmConfig->setConfig($config);

$strmReq = new StreamingRecognizeRequest();

$strmReq->setStreamingConfig($strmConfig);

$strm = $speechClient->streamingRecognize();

$strm->write($strmReq);

$strmReq = new StreamingRecognizeRequest();

$content = file_get_contents($audioFile);

$strmReq->setAudioContent($content);

$strm->write($strmReq);

foreach ($strm->closeWriteAndReadAll() as $response) {

foreach ($response->getResults() as $result) {

foreach ($result->getAlternatives() as $alt) {

printf("Transcription: %s\n", $alt->getTranscript());

}

}

}

} finally {

$speechClient->close();

}

# [END speech_transcribe_streaming]