Cloud Natural Language Client - Class LanguageClient (0.30.2)

Reference documentation and code samples for the Cloud Natural Language Client class LanguageClient.

Google Cloud Natural Language provides natural language understanding technologies to developers, including sentiment analysis, entity recognition, and syntax analysis. Currently only English, Spanish, and Japanese textual context are supported. Find more information at the Google Cloud Natural Language docs.

Example:

use Google\Cloud\Language\LanguageClient;

$language = new LanguageClient();

Namespace

Google \ Cloud \ Language

Methods

__construct

Create a Language client.

Note that when creating a LanguageClient instance, setting $config.projectId is not supported. To switch between projects, you must provide credentials with access to the project.

Parameters
Name	Description
`config`	`array` Configuration Options.
`↳ apiEndpoint`	`string` A hostname with optional port to use in place of the service's default endpoint.
`↳ authCache`	`CacheItemPoolInterface` A cache for storing access tokens. Defaults to a simple in memory implementation.
`↳ authCacheOptions`	`array` Cache configuration options.
`↳ authHttpHandler`	`callable` A handler used to deliver Psr7 requests specifically for authentication.
`↳ credentialsFetcher`	`FetchAuthTokenInterface` A credentials fetcher instance.
`↳ httpHandler`	`callable` A handler used to deliver Psr7 requests. Only valid for requests sent over REST.
`↳ keyFile`	`array` The contents of the service account credentials .json file retrieved from the Google Developer's Console. Ex: `json_decode(file_get_contents($path), true)`.
`↳ keyFilePath`	`string` The full path to your service account credentials .json file retrieved from the Google Developers Console.
`↳ requestTimeout`	`float` Seconds to wait before timing out the request. Defaults to `0` with REST and `60` with gRPC.
`↳ retries`	`int` Number of retries for a failed request. Defaults to `3`.
`↳ scopes`	`array` Scopes to be used for the request.
`↳ quotaProject`	`string` Specifies a user project to bill for access charges associated with the request.

analyzeEntities

Finds named entities (currently finds proper names) in the text, entity types, salience, mentions for each entity, and other properties in the document.

Example:

$annotation = $language->analyzeEntities('Google Cloud Platform is a powerful tool.');

foreach ($annotation->entities() as $entity) {
    echo $entity['type'];
}

Parameters
Name	Description
`content`	`string\|Google\Cloud\Storage\StorageObject` The content to analyze. May be either a string of UTF-8 encoded content, a URI pointing to a Google Cloud Storage object in the format of `gs://{bucket-name}/{object-name}` or a Google\Cloud\Language\Google\Cloud\Storage\StorageObject.
`options`	`array` Configuration options.
`↳ detectGcsUri`	`bool` When providing $content as a string, this flag determines whether or not to attempt to detect if the string represents a Google Cloud Storage URI in the format of `gs://{bucket-name}/{object-name}`. Defaults to `true`.
`↳ type`	`string` The document type. Acceptable values are `PLAIN_TEXT` or `HTML`. Defaults to `"PLAIN_TEXT"`.
`↳ language`	`string` The language of the document. Both ISO (e.g., en, es) and BCP-47 (e.g., en-US, es-ES) language codes are accepted. If no value is provided, the language will be detected by the service.
`↳ encodingType`	`string` The text encoding type used by the API to calculate offsets. Acceptable values are `"NONE"`, `"UTF8"`, `"UTF16"` and `"UTF32"`. Defaults to `"UTF8"`. Please note the following behaviors for the encoding type setting: `"NONE"` will return a value of "-1" for offsets. `"UTF8"` will return byte offsets. `"UTF16"` will return code unit offsets. `"UTF32"` will return unicode character offsets.

Returns
Type	Description
`Google\Cloud\Language\Annotation`

analyzeSentiment

Analyzes the sentiment of the provided document.

Example:

$annotation = $language->analyzeSentiment('Google Cloud Platform is a powerful tool.');
$sentiment = $annotation->sentiment();

if ($sentiment['score'] > 0) {
    echo 'This is a positive message.';
}

Parameters
Name	Description
`content`	`string\|Google\Cloud\Storage\StorageObject` The content to analyze. May be either a string of UTF-8 encoded content, a URI pointing to a Google Cloud Storage object in the format of `gs://{bucket-name}/{object-name}` or a Google\Cloud\Language\Google\Cloud\Storage\StorageObject.
`options`	`array` Configuration options.
`↳ detectGcsUri`	`bool` When providing $content as a string, this flag determines whether or not to attempt to detect if the string represents a Google Cloud Storage URI in the format of `gs://{bucket-name}/{object-name}`. Defaults to `true`.
`↳ type`	`string` The document type. Acceptable values are `PLAIN_TEXT` or `HTML`. Defaults to `"PLAIN_TEXT"`.
`↳ language`	`string` The language of the document. Both ISO (e.g., en, es) and BCP-47 (e.g., en-US, es-ES) language codes are accepted. If no value is provided, the language will be detected by the service.
`↳ encodingType`	`string` The text encoding type used by the API to calculate offsets. Acceptable values are `"NONE"`, `"UTF8"`, `"UTF16"` and `"UTF32"`. Defaults to `"UTF8"`. Please note the following behaviors for the encoding type setting: `"NONE"` will return a value of "-1" for offsets. `"UTF8"` will return byte offsets. `"UTF16"` will return code unit offsets. `"UTF32"` will return unicode character offsets.

Returns
Type	Description
`Google\Cloud\Language\Annotation`

analyzeEntitySentiment

Finds entities in the text and analyzes sentiment associated with each entity and its mentions.

Example:

$annotation = $language->analyzeEntitySentiment('Google Cloud Platform is a powerful tool.');
$entities = $annotation->entities();

echo 'Entity name: ' . $entities[0]['name'] . PHP_EOL;
if ($entities[0]['sentiment']['score'] > 0) {
    echo 'This is a positive message.';
}

Parameters
Name	Description
`content`	`string\|Google\Cloud\Storage\StorageObject` The content to analyze. May be either a string of UTF-8 encoded content, a URI pointing to a Google Cloud Storage object in the format of `gs://{bucket-name}/{object-name}` or a Google\Cloud\Language\Google\Cloud\Storage\StorageObject.
`options`	`array` Configuration options.
`↳ detectGcsUri`	`bool` When providing $content as a string, this flag determines whether or not to attempt to detect if the string represents a Google Cloud Storage URI in the format of `gs://{bucket-name}/{object-name}`. Defaults to `true`.
`↳ type`	`string` The document type. Acceptable values are `PLAIN_TEXT` or `HTML`. Defaults to `"PLAIN_TEXT"`.
`↳ language`	`string` The language of the document. Both ISO (e.g., en, es) and BCP-47 (e.g., en-US, es-ES) language codes are accepted. If no value is provided, the language will be detected by the service.
`↳ encodingType`	`string` The text encoding type used by the API to calculate offsets. Acceptable values are `"NONE"`, `"UTF8"`, `"UTF16"` and `"UTF32"`. Defaults to `"UTF8"`. Please note the following behaviors for the encoding type setting: `"NONE"` will return a value of "-1" for offsets. `"UTF8"` will return byte offsets. `"UTF16"` will return code unit offsets. `"UTF32"` will return unicode character offsets.

Returns
Type	Description
`Google\Cloud\Language\Annotation`

analyzeSyntax

Analyzes the document and provides a full set of text annotations.

Example:

$annotation = $language->analyzeSyntax('Google Cloud Platform is a powerful tool.');

foreach ($annotation->sentences() as $sentence) {
    echo $sentence['text']['beginOffset'];
}

Parameters
Name	Description
`content`	`string\|Google\Cloud\Storage\StorageObject` The content to analyze. May be either a string of UTF-8 encoded content, a URI pointing to a Google Cloud Storage object in the format of `gs://{bucket-name}/{object-name}` or a Google\Cloud\Language\Google\Cloud\Storage\StorageObject.
`options`	`array` Configuration options.
`↳ detectGcsUri`	`bool` When providing $content as a string, this flag determines whether or not to attempt to detect if the string represents a Google Cloud Storage URI in the format of `gs://{bucket-name}/{object-name}`. Defaults to `true`.
`↳ type`	`string` The document type. Acceptable values are `PLAIN_TEXT` or `HTML`. Defaults to `"PLAIN_TEXT"`.
`↳ language`	`string` The language of the document. Both ISO (e.g., en, es) and BCP-47 (e.g., en-US, es-ES) language codes are accepted. If no value is provided, the language will be detected by the service.
`↳ encodingType`	`string` The text encoding type used by the API to calculate offsets. Acceptable values are `"NONE"`, `"UTF8"`, `"UTF16"` and `"UTF32"`. Defaults to `"UTF8"`. Please note the following behaviors for the encoding type setting: `"NONE"` will return a value of "-1" for offsets. `"UTF8"` will return byte offsets. `"UTF16"` will return code unit offsets. `"UTF32"` will return unicode character offsets.

Returns
Type	Description
`Google\Cloud\Language\Annotation`

classifyText

Analyzes the document and provides a full set of text annotations, including semantic, syntactic, and sentiment information.

Example:

$annotation = $language->classifyText('Google Cloud Platform is a powerful tool.');

foreach ($annotation->categories() as $category) {
    echo $category['name'];
}

Parameters
Name	Description
`content`	`string\|Google\Cloud\Storage\StorageObject` The content to analyze. May be either a string of UTF-8 encoded content, a URI pointing to a Google Cloud Storage object in the format of `gs://{bucket-name}/{object-name}` or a Google\Cloud\Language\Google\Cloud\Storage\StorageObject.
`options`	`array` Configuration options.
`↳ detectGcsUri`	`bool` When providing $content as a string, this flag determines whether or not to attempt to detect if the string represents a Google Cloud Storage URI in the format of `gs://{bucket-name}/{object-name}`. Defaults to `true`.
`↳ type`	`string` The document type. Acceptable values are `PLAIN_TEXT` or `HTML`. Defaults to `"PLAIN_TEXT"`.
`↳ language`	`string` The language of the document. Both ISO (e.g., en, es) and BCP-47 (e.g., en-US, es-ES) language codes are accepted. If no value is provided, the language will be detected by the service.

Returns
Type	Description
`Google\Cloud\Language\Annotation`

annotateText

Analyzes the document and provides a full set of text annotations, including semantic, syntactic, and sentiment information.

Example:

// Annotate text with all features enabled.
$annotation = $language->annotateText('Google Cloud Platform is a powerful tool.');
$sentiment = $annotation->sentiment();

echo $sentiment['magnitude'];

// Annotate text with syntax and sentiment features enabled.
$annotation = $language->annotateText('Google Cloud Platform is a powerful tool.', [
    'features' => ['syntax', 'sentiment']
]);

foreach ($annotation->tokens() as $token) {
    echo $token['text']['beginOffset'];
}

Parameters
Name	Description
`content`	`string\|Google\Cloud\Storage\StorageObject` The content to analyze. May be either a string of UTF-8 encoded content, a URI pointing to a Google Cloud Storage object in the format of `gs://{bucket-name}/{object-name}` or a Google\Cloud\Language\Google\Cloud\Storage\StorageObject.
`options`	`array` Configuration options.
`↳ detectGcsUri`	`bool` When providing $content as a string, this flag determines whether or not to attempt to detect if the string represents a Google Cloud Storage URI in the format of `gs://{bucket-name}/{object-name}`. Defaults to `true`.
`↳ features`	`array` Features to apply to the request. Valid values are `syntax`, `sentiment`, `entities`, `entitySentiment`, and `classify`. If no features are provided the request will run with all features enabled.
`↳ type`	`string` The document type. Acceptable values are `PLAIN_TEXT` or `HTML`. Defaults to `"PLAIN_TEXT"`.
`↳ language`	`string` The language of the document. Both ISO (e.g., en, es) and BCP-47 (e.g., en-US, es-ES) language codes are accepted. If no value is provided, the language will be detected by the service.
`↳ encodingType`	`string` The text encoding type used by the API to calculate offsets. Acceptable values are `"NONE"`, `"UTF8"`, `"UTF16"` and `"UTF32"`. Defaults to `"UTF8"`. Please note the following behaviors for the encoding type setting: `"NONE"` will return a value of "-1" for offsets. `"UTF8"` will return byte offsets. `"UTF16"` will return code unit offsets. `"UTF32"` will return unicode character offsets.

Returns
Type	Description
`Google\Cloud\Language\Annotation`

Constants

VERSION

Value: '0.30.2'

FULL_CONTROL_SCOPE

Value: 'https://www.googleapis.com/auth/cloud-platform'