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<?php

/**

* Copyright 2017 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/language/README.md

*/

# [START language_classify_string]

namespace Google\Cloud\Samples\Language;

use Google\Cloud\Language\LanguageClient;

/**

* Classify text (20+ words) into categories.

* ```

* classify_text(

* 'The first two gubernatorial elections since President Donald Trump ' .

* 'took office went in favor of Democratic candidates in Virginia and ' .

* 'New Jersey.'

* );

* ```

*

* @param string $text The text to analyze.

* @param string $projectId (optional) Your Google Cloud Project ID

*/

function classify_text($text, $projectId = null)

{

// Make sure we have enough words (20+) to call classifyText

if (str_word_count($text) < 20) {

printf('20+ words are required to classify text.' . PHP_EOL);

return;

}

// Create the Natural Language client

$language = new LanguageClient([

'projectId' => $projectId,

]);

// Call the classifyText function

$response = $language->classifyText($text);

$categories = $response->categories();

// Print out information about each category

foreach ($categories as $category) {

printf('Category Name: %s' . PHP_EOL, $category['name']);

printf('Confidence: %s' . PHP_EOL, $category['confidence']);

printf(PHP_EOL);

}

}

# [END language_classify_string]