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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/blob/master/pubsub/api/README.md

*/

namespace Google\Cloud\Samples\PubSub;

# [START pubsub_subscriber_sync_pull]

# [START pubsub_quickstart_subscriber]

use Google\Cloud\PubSub\PubSubClient;

/**

* Pulls all Pub/Sub messages for a subscription.

*

* @param string $projectId The Google project ID.

* @param string $subscriptionName The Pub/Sub subscription name.

*/

function pull_messages($projectId, $subscriptionName)

{

$pubsub = new PubSubClient([

'projectId' => $projectId,

]);

$subscription = $pubsub->subscription($subscriptionName);

foreach ($subscription->pull() as $message) {

printf('Message: %s' . PHP_EOL, $message->data());

// Acknowledge the Pub/Sub message has been received, so it will not be pulled multiple times.

$subscription->acknowledge($message);

}

}

# [END pubsub_subscriber_sync_pull]

# [END pubsub_quickstart_subscriber]