/
run_simple_transaction.php
52 lines (48 loc) · 1.68 KB
/
run_simple_transaction.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
<?php
/**
* Copyright 2018 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/firestore/README.md
*/
namespace Google\Cloud\Samples\Firestore;
use Google\Cloud\Firestore\FirestoreClient;
use Google\Cloud\Firestore\Transaction;
/**
* Run a simple transaction.
* ```
* run_simple_transaction('your-project-id');
* ```
*/
function run_simple_transaction($projectId)
{
// Create the Cloud Firestore client
$db = new FirestoreClient([
'projectId' => $projectId,
]);
# [START fs_run_simple_transaction]
$cityRef = $db->collection('cities')->document('SF');
$db->runTransaction(function (Transaction $transaction) use ($cityRef) {
$snapshot = $transaction->snapshot($cityRef);
$newPopulation = $snapshot['population'] + 1;
$transaction->update($cityRef, [
['path' => 'population', 'value' => $newPopulation]
]);
});
# [END fs_run_simple_transaction]
printf('Ran a simple transaction to update the population field in the SF document in the cities collection.' . PHP_EOL);
}