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query_collection_group_filter_eq.php
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query_collection_group_filter_eq.php
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<?php
/**
* Copyright 2020 Google LLC
*
* 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/main/firestore/README.md
*/
namespace Google\Cloud\Samples\Firestore;
use Google\Cloud\Firestore\FirestoreClient;
/**
* Query collection group for documents.
* Users need to enable single-field index before querying
* @see https://firebase.google.com/docs/firestore/query-data/index-overview#automatic_indexing
*
* @param string $projectId The Google Cloud Project ID
*/
function query_collection_group_filter_eq(string $projectId): void
{
// Create the Cloud Firestore client
$db = new FirestoreClient([
'projectId' => $projectId,
]);
# [START firestore_query_collection_group_filter_eq]
$museums = $db->collectionGroup('landmarks')->where('type', '==', 'museum');
foreach ($museums->documents() as $document) {
printf('%s => %s' . PHP_EOL, $document->id(), $document->data()['name']);
}
# [END firestore_query_collection_group_filter_eq]
}
// The following 2 lines are only needed to run the samples
require_once __DIR__ . '/../../testing/sample_helpers.php';
\Google\Cloud\Samples\execute_sample(__FILE__, __NAMESPACE__, $argv);