Description

I added support for Firebase App Check so the SDK can be used to implement a custom provider and can also be used to verify app check tokens.

I wanted to use App Check to protect custom backend resources for a project of mine and was frustrated to find out that it's only available in the official Node.JS SDK.

Closes #693

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have made corresponding changes to the documentation

Please avoid using the issue tracker for questions or help. Submitting issues to this repository are usually reserved for bugs, feature requests, or changes to the source code. We have a help channel at https://gitter.im/kreait/firebase-php (you can sign in with your GitHub account). If nobody can answer your question, tag @jeromegamez in your question.

Also see past issues and https://firebase-php.readthedocs.io/en/latest/troubleshooting.html to check if your problem has already been covered.

Please chose a descriptive title for your issue and delete everything before and including this line before submitting the issue.

The problem

Briefly describe the issue you are experiencing (or the feature you want to see added).

Environment

• PHP Version (php -v):
• Firebase PHP SDK version (composer show | grep kreait):

Details

If necessary, describe the problem you have been experiencing in more detail.

Code to reproduce issue

Please remember that with sample code it's easier to reproduce the bug and it's much faster to fix it.

Unable to find Firebase\Factory class composer ran successfully. below code ...

<?php
require __DIR__ . '/vendor/autoload.php';
$firebase = (new Firebase\Factory())->create();
# If the JSON file is located in a path accessible to your project,
# or if you want to create multiple dedicated instances
$firebase = (new Firebase\Factory())
    ->withCredentials(__DIR__.'/path/to/google-service-account.json')
    ->create();
?>

Can you please add this step install the package and special dependency are required ?

1. Which version of kreait/firebase-php are you using?

kreait/[email protected]

guzzlehttp/[email protected]

2. Which version of PHP are you using?

PHP 7.0.25-0ubuntu0.16.04.1 (cli) ( NTS )

3. What's the issue?

My code suddently stopped working with kreait/[email protected] – probably because of Firebase changes/deprecations – so I thought I'll do an update. I updated to 4.1.2 generated new Firebase Service Account credentials. Then I replaced the deprecated asUserWithClaims method with asUser instead. On my local machine everything worked fine, but online I can't seem to be able to request the data.

After surrounding my code (see section 4) with a try catch block, i receive the following Exception:

Exception:
Error creating resource: [message]
fopen(https://PROJECT_ID.firebaseio.com/PATH_TO_RESSOURCE.json?
auth_variable_override=%7B%22uid%22%3A%22MY_ADMIN_UID%22%7D): failed to open stream:
Connection timed out [file]
/var/www/vendor/guzzlehttp/guzzle/src/Handler/StreamHandler.php [line] 324

4. Code that lead to the issue

NOTE that I've replaced some sensitive data:

<?php

require_once 'vendor/autoload.php';
require_once 'constants.php';

// debugging
error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', 1);

use Kreait\Firebase\Factory;
use Kreait\Firebase\ServiceAccount;

try {
  // Firebase Admin SDK
  $serviceAccount = ServiceAccount::fromJsonFile(__DIR__.'/__my_private_credentials__.json');
  $firebase = (new Factory)
    ->withServiceAccount($serviceAccount)
    ->asUser(MY_ADMIN_UID) // from constants.php
    ->create();
  $database = $firebase->getDatabase();

  $projectPath = PATH_TO_RESSOURCE; // from constants.php
  $projectRef = $database->getReference($projectPath);
  $projectData = json_decode( json_encode($projectRef->getValue()) );

  echo '<pre>';
  var_dump($projectData);
  echo '</pre>';

} catch(Exception $e) {
  echo 'Exception:<br>';
  echo $e->getMessage();
}

exit;

Guesses

I can only guess what's wrong here... Maybe because we use SSL on the server ? Or do I require an API key from firebase and use withServiceAccountAndApiKey instead ?

What are your guesses ? It would be awesome to get a lead on this issue, since we use this in production...

Thanks in advance !

For the last three days I have been receiving this error nternal error encountered. {"userId":1,"exception":"[object] (Kreait\\Firebase\\Exception\\Messaging\\ServerError(code: 500) and I don't know what's the issue. I have been using this package for sending notifications for a year without any issue but in the last three days it's not working. I have generated a new credential and changed this library to the laravel-firebase but got no luck and I thought that it's form Firebase servers that they may be down but I checked there servers there's no issue there too. I'm stuck I don't know what to do next? is there nay updates that i"m not aware of it? I'm using the credential json file from google cloud platform as it's written in the documentation "it was working before" and I think not using anything else for the cloud messaging. so is there anything that I need to put for the cloud messaging because it's not written anywhere in this library? Thanks in advance

Describe the bug We are using the libraries multicast capabilities to sent messages to the devices of a user (a user can have multiple devices, therefor we track multiple device tokens for each user). In an older version of the library it was possible to send single messages to a single device token. With the single message it was possible to identify if the device for a registration token was unregistered or if the message was delivered successfully. With the multicast implementation all messages are reported as successfully delivered - even for registration tokens which are unregistered. It seems that the subResponses are different depending on the registered / unregistered state of the device / deviceToken.

registered device: { "name": "projects/[project-name]/messages/1584562990026860" }

probably unregistered device { "name": "projects/[project-name]/messages/0:1584562990029639%3f04f5553f04f555" }

Are we missing something or is this the intended behavior?

To Reproduce item 0 = successfully delivered item 1 = old unregistered token

$report = {Kreait\Firebase\Messaging\MulticastSendReport} [1]
 items = {array} [24]
  0 = {Kreait\Firebase\Messaging\SendReport} [3]
   target = {Kreait\Firebase\Messaging\MessageTarget} [2]
   result = {array} [1]
    name = "projects/[project-name]/messages/1584566014466720"
   error = null
  1 = {Kreait\Firebase\Messaging\SendReport} [3]
   target = {Kreait\Firebase\Messaging\MessageTarget} [2]
   result = {array} [1]
    name = "projects/[project-name]/messages/0:1584566014634780%3f04f5553f04f555"
   error = null

Expected behavior It should be possible to differentiate between successfully sent messages and messages that couldn't be sent because the device got unregistered when using multicastmessage

Environment (please complete the following information):

• OS: webdevops/php-nginx-dev:7.2 (debian based docker-image)
• PHP version: 7.2.26
• Firebase SDK Version: 4.36.2

Can we allow push notification to a batch of device IDs, instead of one at a time.

This seems that it is possible:

https://firebase.google.com/docs/cloud-messaging/android/device-group and https://firebase.google.com/docs/cloud-messaging/http-server-ref#send-downstream

Hi,

I was looking around the service account discovery file and i saw these methods were used to discover them:

    public function getDefaultMethods(): array
    {
        return [
            new Discovery\FromEnvironmentVariable('FIREBASE_CREDENTIALS'),
            new Discovery\FromEnvironmentVariable(CredentialsLoader::ENV_VAR),
            new Discovery\FromGoogleWellKnownFile(),
            new Discovery\OnGoogleCloudPlatform(),
        ];
    }

The FromGoogleWellKnownFile one seems to imply that it will look for the application default credentials in $HOME/.config/gcloud/application_default_credentials.json. That file exists on my system. However if i don't set GOOGLE_APPLICATION_CREDENTIALS php errors out with

Kreait\\Firebase\\ServiceAccount\\Discovery\\FromEnvironmentVariable: The environment variable \"FIREBASE_CREDENTIALS\" is not set.\nKreait\\Firebase\\ServiceAccount\\Discovery\\FromEnvironmentVariable: The environment variable \"GOOGLE_APPLICATION_CREDENTIALS\" is not set.\nThe following fields are missing/empty in the Service Account specification: \"project_id\", \"client_email\", \"private_key\". Please make sure you download the Service Account JSON file from the Service Accounts tab in the Firebase Console, as shown in the documentation on https://firebase.google.com/docs/admin/setup#add_firebase_to_your_app\ncURL error 28: Connection timed out after 1001 milliseconds (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)",

Can you fix it so that the application default credentials get picked up properly?

When I run the code I receive the following error (details obfuscated for obvious reasons). The Google services config file is being set correctly as an environment variable (I can echo it fully). But firebase-php is objecting to it for reasons that have now defeated me. Has anyone else experienced this error? Any hints or tips?

PHP Fatal error: Uncaught Kreait\Firebase\Exception\ServiceAccountDiscoveryFailed: Kreait\Firebase\ServiceAccount\Discovery\FromEnvironmentVariable: The environment variable "FIREBASE_CREDENTIALS" points to "{ "type": "service_account", "project_id": "yadayadayada", "private_key_id": "aaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbb", "private_key": "-----BEGIN PRIVATE KEY-----\nMIIEvQIBaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb+ndY21h\ndevzJOTFSMmBvDBON7799zlhuWgmuz7mRFRgAfNHqHK9Q2weHZsQ5wtujyqw/0j1\nyBh6RYhgg1IAKdKyClqr50++kI++O35Jmx2CdSG1SSP1SI09toomulThbTTyROL0\nH in /foo/bar/yada/vendor/kreait/firebase-php/src/Firebase/ServiceAccount/Discoverer.php on line 52

The problem

Proxy don't work.

Environment

• PHP 7.2.6
• Firebase 4.15.1

Details

If i directly connect to database everything works Proxy don't work

Code to reproduce issue

code fragments
class ObjectBase

<?php  

require __DIR__.'/vendor/autoload.php';  

use Kreait\Firebase\Factory;  
use Kreait\Firebase\ServiceAccount;  


class ObjectBase  
{  

    private $database;  

    public function objectbase()  
    {  
        $serviceAccount = ServiceAccount::fromJsonFile(__DIR__.'/private_key.json');  
        var_dump($serviceAccount);  
        $httpConfig = [  
            'proxy' => [
                'http'  => '$adres_for_http',
                'https' => '$adres_for_https',
            ],
            'debug' => true
         ];   
        $firebase = (new Factory)  
            ->withHttpClientConfig($httpConfig)  
            ->withServiceAccount($serviceAccount)  
            ->withDatabaseUri('https://test-48b03.firebaseio.com')  
            ->create();  
        $this->database = $firebase->getDatabase();  
    }  

......

    public function addKey()  
    {  
        $data = $this->database->getReference('blog/posts');  
        return $data->push([  
            'title' => 'new data'  
        ])->getKey();;  
    }  

?>  

index

$objectbase = new ObjectBase();  
$objectbase->addKey();  

Describe the issue you are experiencing

Hello all, I encountered an issue with Cloud Messaging.

$messaging->send($message); --> This function result in the following error:

An uncaught Exception was encountered Type: Kreait\Firebase\Exception\Messaging\MessagingError Message: syntax error, unexpected '|', expecting variable (T_VARIABLE) Filename: ../vendor/kreait/firebase-php/src/Firebase/Exception/MessagingApiExceptionConverter.php Line Number: 56

I used the following codes:

use Kreait\Firebase\Factory; use Kreait\Firebase\Messaging\CloudMessage; use Kreait\Firebase\Messaging\Notification;

$factory = (new Factory)->withServiceAccount('path to sdk json'); $messaging = $factory->createMessaging(); $message = CloudMessage::withTarget('token', 'my device token') ->withNotification(Notification::create('Title', 'Body'));
$messaging->send($message);

Error occur when it reach this function --> $messaging->send($message);

I have also tried with kreait/firebase v6. Same error occur.

Environment: PHP 7.4.3. kreait/firebase-php 5.26.1 Framework Codeigniter 3.1.11 with composer autoload.

Thanks for the help.

Installed packages

chriskacerguis/codeigniter-restserver 3.1.2 CI Rest Server fig/http-message-util 1.1.5 Utility classes and constants... firebase/php-jwt v5.5.1 A simple library to encode an... google/auth v1.18.0 Google Auth Library for PHP google/cloud-core v1.43.2 Google Cloud PHP shared depen... google/cloud-storage v1.26.0 Cloud Storage Client for PHP google/crc32 v0.1.0 Various CRC32 implementations guzzlehttp/guzzle 7.4.1 Guzzle is a PHP HTTP client l... guzzlehttp/promises 1.5.1 Guzzle promises library guzzlehttp/psr7 2.1.0 PSR-7 message implementation ... kreait/clock 1.1.0 A PHP 7.0 compatible clock ab... kreait/firebase-php 5.26.1 Firebase Admin SDK kreait/firebase-tokens 1.16.1 A library to work with Fireba... lcobucci/clock 2.1.0 Yet another clock abstraction lcobucci/jwt 4.1.5 A simple library to work with... monolog/monolog 2.3.5 Sends your logs to files, soc... mtdowling/jmespath.php 2.6.1 Declaratively specify how to ... psr/cache 2.0.0 Common interface for caching ... psr/http-client 1.0.1 Common interface for HTTP cli... psr/http-factory 1.0.1 Common interfaces for PSR-7 H... psr/http-message 1.0.1 Common interface for HTTP mes... psr/log 3.0.0 Common interface for logging ... psr/simple-cache 1.0.1 Common interfaces for simple ... ralouphie/getallheaders 3.0.3 A polyfill for getallheaders. riverline/multipart-parser 2.0.9 One class library to parse mu... rize/uri-template 0.3.4 PHP URI Template (RFC 6570) s... symfony/deprecation-contracts v3.0.0 A generic function and conven... symfony/polyfill-mbstring v1.24.0 Symfony polyfill for the Mbst... symfony/polyfill-php80 v1.24.0 Symfony polyfill backporting ... symfony/polyfill-php81 v1.24.0 Symfony polyfill backporting ..

PHP version and extensions

composer-plugin-api 1.1.0 The Composer Plugin API ext-bz2 7.4.3 The bz2 PHP extension ext-calendar 7.4.3 The calendar PHP extension ext-ctype 7.4.3 The ctype PHP extension ext-curl 7.4.3 The curl PHP extension ext-date 7.4.3 The date PHP extension ext-dom 20031129 The dom PHP extension ext-exif 7.4.3 The exif PHP extension ext-FFI 7.4.3 The FFI PHP extension ext-fileinfo 7.4.3 The fileinfo PHP extension ext-filter 7.4.3 The filter PHP extension ext-ftp 7.4.3 The ftp PHP extension ext-gd 7.4.3 The gd PHP extension ext-gettext 7.4.3 The gettext PHP extension ext-hash 7.4.3 The hash PHP extension ext-iconv 7.4.3 The iconv PHP extension ext-json 7.4.3 The json PHP extension ext-libxml 7.4.3 The libxml PHP extension ext-mbstring 7.4.3 The mbstring PHP extension ext-mysqli 7.4.3 The mysqli PHP extension ext-mysqlnd 0 The mysqlnd PHP extension (actual version: mys... ext-openssl 7.4.3 The openssl PHP extension ext-pcntl 7.4.3 The pcntl PHP extension ext-pcre 7.4.3 The pcre PHP extension ext-PDO 7.4.3 The PDO PHP extension ext-pdo_mysql 7.4.3 The pdo_mysql PHP extension ext-Phar 7.4.3 The Phar PHP extension ext-posix 7.4.3 The posix PHP extension ext-readline 7.4.3 The readline PHP extension ext-Reflection 7.4.3 The Reflection PHP extension ext-session 7.4.3 The session PHP extension ext-shmop 7.4.3 The shmop PHP extension ext-SimpleXML 7.4.3 The SimpleXML PHP extension ext-sockets 7.4.3 The sockets PHP extension ext-sodium 7.4.3 The sodium PHP extension ext-SPL 7.4.3 The SPL PHP extension ext-sysvmsg 7.4.3 The sysvmsg PHP extension ext-sysvsem 7.4.3 The sysvsem PHP extension ext-sysvshm 7.4.3 The sysvshm PHP extension ext-tokenizer 7.4.3 The tokenizer PHP extension ext-xml 7.4.3 The xml PHP extension ext-xmlreader 7.4.3 The xmlreader PHP extension ext-xmlwriter 7.4.3 The xmlwriter PHP extension ext-xsl 7.4.3 The xsl PHP extension ext-Zend-OPcache 7.4.3 The Zend OPcache PHP extension ext-zip 1.15.6 The zip PHP extension ext-zlib 7.4.3 The zlib PHP extension lib-curl 7.68.0 The curl PHP library lib-iconv 2.31 The iconv PHP library lib-libxml 2.9.10 The libxml PHP library lib-openssl 1.1.1.6 OpenSSL 1.1.1f 31 Mar 2020 lib-pcre 10.34 The pcre PHP library lib-xsl 1.1.34 The xsl PHP library php 7.4.3 The PHP interpreter php-64bit 7.4.3 The PHP interpreter, 64bit php-ipv6 7.4.3 The PHP interpreter, with IPv6 support

On which operating system(s) does the issue occur?

• [X] Linux
• [ ] MacOS
• [ ] Windows

Steps to reproduce the issue.

use Kreait\Firebase\Factory; use Kreait\Firebase\Messaging\CloudMessage; use Kreait\Firebase\Messaging\Notification;

$factory = (new Factory)->withServiceAccount('path to sdk json'); $messaging = $factory->createMessaging(); $message = CloudMessage::withTarget('token', 'my device token') ->withNotification(Notification::create('Title', 'Body'));
$messaging->send($message);

Error message/Stack trace

An uncaught Exception was encountered

<p>Type: Kreait\Firebase\Exception\Messaging\MessagingError</p>
<p>Message: syntax error, unexpected '|', expecting variable (T_VARIABLE)</p>
<p>Filename:
	/vendor/kreait/firebase-php/src/Firebase/Exception/MessagingApiExceptionConverter.php
</p>
<p>Line Number: 56</p>
<p>Backtrace:</p>
<p style="margin-left:10px">
	File:
	/vendor/kreait/firebase-php/src/Firebase/Messaging/ApiClient.php<br />
		Line: 44<br />
		Function: convertException			</p>

	<p style="margin-left:10px">
		/vendor/kreait/firebase-php/src/Firebase/Messaging.php<br />
		Line: 54<br />
		Function: send			</p>

Additional information

No response

Describe the feature you would like to see

I'm trying to use the firebase/firestore emulator but as I can see in the docs

Only the Auth and Realtime Database Emulators are currently supported in this PHP SDK.

and also I've read this comment (from 2020): stackoverflow

Any updates?

thanks for reading :)

Describe the feature you would like to see

Hi, I have a firebase project that contains multiple realtime databases and I need access to them in Laravel. I haven't found any information about this. Thanks in advance.

Describe the feature you would like to see

It seems to me as if only AndroidConfig would be supported, but not AndroidNotification.

Alike this it's kind of difficult to set a channel_id... or where does one have to pass this array?

Describe the issue you are experiencing

I want to read the serverTimeOffset to understand the difference in time between the local server and Firebase hosting.

$timeOffset = $database->getReference(".info/serverTimeOffset")->getValue();

I get error:

In Database.php line 43:
The child key ".info" contains one of the following invalid characters: ".$#[]"
In Validator.php line 66: The child key ".info" contains one of the following invalid characters: ".$#[]"

Is there any way to read the time offset?

Installed packages

barryvdh/laravel-dompdf            v0.9.0  A DOMPDF Wrapper for Laravel
brick/math                         0.9.3   Arbitrary-precision arithmetic library
chillerlan/php-qrcode              4.3.1   A QR code generator. PHP 7.4+
chillerlan/php-settings-container  2.1.2   A container class for immutable settings objects. Not a DI container. PHP 7.4+
doctrine/inflector                 2.0.3   PHP Doctrine Inflector is a small library that can perform string manipulations with regard to upper/lowercase and singular/plural forms of words.
doctrine/instantiator              1.4.0   A small, lightweight utility to instantiate objects in PHP without invoking their constructors
doctrine/lexer                     1.2.1   PHP Doctrine Lexer parser library that can be used in Top-Down, Recursive Descent Parsers.
dompdf/dompdf                      v1.0.2  DOMPDF is a CSS 2.1 compliant HTML to PDF converter
dragonmantank/cron-expression      v3.1.0  CRON for PHP: Calculate the next or previous run date and determine if a CRON expression is due
egulias/email-validator            2.1.25  A library for validating emails against several RFCs
fakerphp/faker                     v1.16.0 Faker is a PHP library that generates fake data for you.
fig/http-message-util              1.1.5   Utility classes and constants for use with PSR-7 (psr/http-message)
firebase/php-jwt                   v5.4.0  A simple library to encode and decode JSON Web Tokens (JWT) in PHP. Should conform to the current spec.
google/auth                        v1.18.0 Google Auth Library for PHP
google/cloud-core                  v1.43.0 Google Cloud PHP shared dependency, providing functionality useful to all components.
google/cloud-storage               v1.25.1 Cloud Storage Client for PHP
google/crc32                       v0.1.0  Various CRC32 implementations
graham-campbell/result-type        v1.0.2  An Implementation Of The Result Type
guzzlehttp/guzzle                  7.3.0   Guzzle is a PHP HTTP client library
guzzlehttp/promises                1.4.1   Guzzle promises library
guzzlehttp/psr7                    2.1.0   PSR-7 message implementation that also provides common utility methods
hamcrest/hamcrest-php              v2.0.1  This is the PHP port of Hamcrest Matchers
illuminate/auth                    v8.63.0 The Illuminate Auth package.
illuminate/broadcasting            v8.63.0 The Illuminate Broadcasting package.
illuminate/bus                     v8.63.0 The Illuminate Bus package.
illuminate/cache                   v8.62.0 The Illuminate Cache package.
illuminate/collections             v8.63.0 The Illuminate Collections package.
illuminate/config                  v8.63.0 The Illuminate Config package.
illuminate/console                 v8.63.0 The Illuminate Console package.
illuminate/container               v8.63.0 The Illuminate Container package.
illuminate/contracts               v8.63.0 The Illuminate Contracts package.
illuminate/database                v8.63.0 The Illuminate Database package.
illuminate/encryption              v8.63.0 The Illuminate Encryption package.
illuminate/events                  v8.63.0 The Illuminate Events package.
illuminate/filesystem              v8.63.0 The Illuminate Filesystem package.
illuminate/hashing                 v8.63.0 The Illuminate Hashing package.
illuminate/http                    v8.63.0 The Illuminate Http package.
illuminate/log                     v8.63.0 The Illuminate Log package.
illuminate/macroable               v8.62.0 The Illuminate Macroable package.
illuminate/pagination              v8.63.0 The Illuminate Pagination package.
illuminate/pipeline                v8.63.0 The Illuminate Pipeline package.
illuminate/queue                   v8.63.0 The Illuminate Queue package.
illuminate/session                 v8.63.0 The Illuminate Session package.
illuminate/support                 v8.63.0 The Illuminate Support package.
illuminate/testing                 v8.63.0 The Illuminate Testing package.
illuminate/translation             v8.63.0 The Illuminate Translation package.
illuminate/validation              v8.63.0 The Illuminate Validation package.
illuminate/view                    v8.63.0 The Illuminate View package.
kreait/clock                       1.1.0   A PHP 7.0 compatible clock abstraction
kreait/firebase-php                5.24.0  Firebase Admin SDK
kreait/firebase-tokens             1.16.1  A library to work with Firebase tokens
kreait/laravel-firebase            3.1.0   A Laravel package for the Firebase PHP Admin SDK
laravel/lumen-framework            v8.2.7  The Laravel Lumen Framework.
laravel/serializable-closure       v1.0.2  Laravel Serializable Closure provides an easy and secure way to serialize closures in PHP.
laravel/tinker                     v2.6.2  Powerful REPL for the Laravel framework.
lcobucci/clock                     2.0.0   Yet another clock abstraction
lcobucci/jwt                       4.0.4   A simple library to work with JSON Web Token and JSON Web Signature
mailjet/mailjet-apiv3-php          v1.5.5  PHP wrapper for the Mailjet API
mockery/mockery                    1.4.4   Mockery is a simple yet flexible PHP mock object framework
monolog/monolog                    2.3.5   Sends your logs to files, sockets, inboxes, databases and various web services
mtdowling/jmespath.php             2.6.1   Declaratively specify how to extract elements from a JSON document
myclabs/deep-copy                  1.10.2  Create deep copies (clones) of your objects
nesbot/carbon                      2.53.1  An API extension for DateTime that supports 281 different languages.
nikic/fast-route                   v1.3.0  Fast request router for PHP
nikic/php-parser                   v4.13.0 A PHP parser written in PHP
opis/closure                       3.6.2   A library that can be used to serialize closures (anonymous functions) and arbitrary objects.
phar-io/manifest                   2.0.3   Component for reading phar.io manifest information from a PHP Archive (PHAR)
phar-io/version                    3.1.0   Library for handling version information and constraints
phenx/php-font-lib                 0.5.2   A library to read, parse, export and make subsets of different types of font files.
phenx/php-svg-lib                  0.3.4   A library to read, parse and export to PDF SVG files.
phpdocumentor/reflection-common    2.2.0   Common reflection classes used by phpdocumentor to reflect the code structure
phpdocumentor/reflection-docblock  5.2.2   With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.
phpdocumentor/type-resolver        1.5.1   A PSR-5 based resolver of Class names, Types and Structural Element Names
phpoption/phpoption                1.8.0   Option Type for PHP
phpspec/prophecy                   1.14.0  Highly opinionated mocking framework for PHP 5.3+
phpunit/php-code-coverage          9.2.7   Library that provides collection, processing, and rendering functionality for PHP code coverage information.
phpunit/php-file-iterator          3.0.5   FilterIterator implementation that filters files based on a list of suffixes.
phpunit/php-invoker                3.1.1   Invoke callables with a timeout
phpunit/php-text-template          2.0.4   Simple template engine.
phpunit/php-timer                  5.0.3   Utility class for timing
phpunit/phpunit                    9.5.10  The PHP Unit Testing framework.
psr/cache                          1.0.1   Common interface for caching libraries
psr/container                      1.1.1   Common Container Interface (PHP FIG PSR-11)
psr/event-dispatcher               1.0.0   Standard interfaces for event handling.
psr/http-client                    1.0.1   Common interface for HTTP clients
psr/http-factory                   1.0.1   Common interfaces for PSR-7 HTTP message factories
psr/http-message                   1.0.1   Common interface for HTTP messages
psr/log                            1.1.4   Common interface for logging libraries
psr/simple-cache                   1.0.1   Common interfaces for simple caching
psy/psysh                          v0.10.9 An interactive shell for modern PHP.
ralouphie/getallheaders            3.0.3   A polyfill for getallheaders.
ramsey/collection                  1.2.1   A PHP library for representing and manipulating collections.
ramsey/uuid                        4.2.3   A PHP library for generating and working with universally unique identifiers (UUIDs).
riverline/multipart-parser         2.0.8   One class library to parse multipart content with encoding and charset support.
rize/uri-template                  0.3.3   PHP URI Template (RFC 6570) supports both expansion & extraction
sabberworm/php-css-parser          8.3.1   Parser for CSS Files written in PHP
sebastian/cli-parser               1.0.1   Library for parsing CLI options
sebastian/code-unit                1.0.8   Collection of value objects that represent the PHP code units
sebastian/code-unit-reverse-lookup 2.0.3   Looks up which function or method a line of code belongs to
sebastian/comparator               4.0.6   Provides the functionality to compare PHP values for equality
sebastian/complexity               2.0.2   Library for calculating the complexity of PHP code units
sebastian/diff                     4.0.4   Diff implementation
sebastian/environment              5.1.3   Provides functionality to handle HHVM/PHP environments
sebastian/exporter                 4.0.3   Provides the functionality to export PHP variables for visualization
sebastian/global-state             5.0.3   Snapshotting of global state
sebastian/lines-of-code            1.0.3   Library for counting the lines of code in PHP source code
sebastian/object-enumerator        4.0.4   Traverses array structures and object graphs to enumerate all referenced objects
sebastian/object-reflector         2.0.4   Allows reflection of object attributes, including inherited and non-public ones
sebastian/recursion-context        4.0.4   Provides functionality to recursively process PHP variables
sebastian/resource-operations      3.0.3   Provides a list of PHP built-in functions that operate on resources
sebastian/type                     2.3.4   Collection of value objects that represent the types of the PHP type system
sebastian/version                  3.0.2   Library that helps with managing the version number of Git-hosted PHP projects
symfony/console                    v5.3.7  Eases the creation of beautiful and testable command line interfaces
symfony/deprecation-contracts      v2.4.0  A generic function and convention to trigger deprecation notices
symfony/error-handler              v5.3.7  Provides tools to manage errors and ease debugging PHP code
symfony/event-dispatcher           v5.3.7  Provides tools that allow your application components to communicate with each other by dispatching events and listening to them
symfony/event-dispatcher-contracts v2.4.0  Generic abstractions related to dispatching event
symfony/finder                     v5.3.7  Finds files and directories via an intuitive fluent interface
symfony/http-client-contracts      v2.4.0  Generic abstractions related to HTTP clients
symfony/http-foundation            v5.3.7  Defines an object-oriented layer for the HTTP specification
symfony/http-kernel                v5.3.9  Provides a structured process for converting a Request into a Response
symfony/mime                       v5.3.8  Allows manipulating MIME messages
symfony/polyfill-ctype             v1.23.0 Symfony polyfill for ctype functions
symfony/polyfill-intl-grapheme     v1.23.1 Symfony polyfill for intl's grapheme_* functions
symfony/polyfill-intl-idn          v1.23.0 Symfony polyfill for intl's idn_to_ascii and idn_to_utf8 functions
symfony/polyfill-intl-normalizer   v1.23.0 Symfony polyfill for intl's Normalizer class and related functions
symfony/polyfill-mbstring          v1.23.1 Symfony polyfill for the Mbstring extension
symfony/polyfill-php72             v1.23.0 Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions
symfony/polyfill-php73             v1.23.0 Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions
symfony/polyfill-php80             v1.23.1 Symfony polyfill backporting some PHP 8.0+ features to lower PHP versions
symfony/polyfill-php81             v1.23.0 Symfony polyfill backporting some PHP 8.1+ features to lower PHP versions
symfony/process                    v5.3.7  Executes commands in sub-processes
symfony/service-contracts          v2.4.0  Generic abstractions related to writing services
symfony/string                     v5.3.7  Provides an object-oriented API to strings and deals with bytes, UTF-8 code points and grapheme clusters in a unified way
symfony/translation                v5.3.9  Provides tools to internationalize your application
symfony/translation-contracts      v2.4.0  Generic abstractions related to translation
symfony/var-dumper                 v5.3.8  Provides mechanisms for walking through any arbitrary PHP variable
theseer/tokenizer                  1.2.1   A small library for converting tokenized PHP source code into XML and potentially other formats
vlucas/phpdotenv                   v5.3.1  Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.
voku/portable-ascii                1.5.6   Portable ASCII library - performance optimized (ascii) string functions for php.
webmozart/assert                   1.10.0  Assertions to validate method input/output with nice error messages.

PHP version and extensions

composer-plugin-api    2.0.0    The Composer Plugin API
composer-runtime-api   2.0.0    The Composer Runtime API
ext-bcmath             7.4.2    The bcmath PHP extension
ext-calendar           7.4.2    The calendar PHP extension
ext-ctype              7.4.2    The ctype PHP extension
ext-curl               7.4.2    The curl PHP extension
ext-date               7.4.2    The date PHP extension
ext-dom                20031129 The dom PHP extension
ext-fileinfo           7.4.2    The fileinfo PHP extension
ext-filter             7.4.2    The filter PHP extension
ext-ftp                7.4.2    The ftp PHP extension
ext-gd                 7.4.2    The gd PHP extension
ext-hash               7.4.2    The hash PHP extension
ext-iconv              7.4.2    The iconv PHP extension
ext-imap               7.4.2    The imap PHP extension
ext-intl               7.4.2    The intl PHP extension
ext-json               7.4.2    The json PHP extension
ext-libxml             7.4.2    The libxml PHP extension
ext-mailparse          3.1.0    The mailparse PHP extension
ext-mbstring           7.4.2    The mbstring PHP extension
ext-mysqli             7.4.2    The mysqli PHP extension
ext-mysqlnd            0        The mysqlnd PHP extension (actual version: mysqlnd 7.4.2)
ext-openssl            7.4.2    The openssl PHP extension
ext-pcre               7.4.2    The pcre PHP extension
ext-pdo                7.4.2    The PDO PHP extension
ext-phar               7.4.2    The Phar PHP extension
ext-readline           7.4.2    The readline PHP extension
ext-reflection         7.4.2    The Reflection PHP extension
ext-session            7.4.2    The session PHP extension
ext-simplexml          7.4.2    The SimpleXML PHP extension
ext-sockets            7.4.2    The sockets PHP extension
ext-spl                7.4.2    The SPL PHP extension
ext-tokenizer          7.4.2    The tokenizer PHP extension
ext-xdebug             2.9.6    The xdebug PHP extension
ext-xml                7.4.2    The xml PHP extension
ext-xmlreader          7.4.2    The xmlreader PHP extension
ext-xmlwriter          7.4.2    The xmlwriter PHP extension
ext-zip                1.15.5   The zip PHP extension
ext-zlib               7.4.2    The zlib PHP extension
lib-curl               7.67.0   The curl library
lib-curl-libssh2       1.8.2    curl libssh2 version
lib-curl-openssl       1.1.1.4  curl OpenSSL version (1.1.1.4)
lib-curl-zlib          1.2.11   curl zlib version
lib-date-timelib       2018.03  date timelib version
lib-date-zoneinfo      2019.3   zoneinfo ("Olson") database for date
lib-fileinfo-libmagic  537      fileinfo libmagic version
lib-gd                 2.0.35   The gd library
lib-gd-freetype        2.9.1    freetype version for gd
lib-gd-libjpeg         9.0      libjpeg version for gd
lib-gd-libpng          1.6.34   libpng version for gd
lib-gd-libxpm          3.5.12   libxpm version for gd
lib-iconv              1.16     The iconv library
lib-icu                65.1     The ICU unicode and globalization support library
lib-icu-cldr           36       ICU CLDR project version
lib-icu-unicode        12.1.0   ICU unicode version
lib-icu-zoneinfo       2019.3   zoneinfo ("Olson") database for icu
lib-libxml             2.9.10   libxml library version
lib-mbstring-libmbfl   1.3.2    mbstring libmbfl version
lib-mbstring-oniguruma 6.9.4    mbstring oniguruma version
lib-openssl            1.1.1.4  OpenSSL 1.1.1d  10 Sep 2019
lib-pcre               10.33    The pcre library
lib-pcre-unicode       11.0.0   PCRE Unicode version support
lib-zlib               1.2.11   The zlib library
php                    7.4.2    The PHP interpreter
php-64bit              7.4.2    The PHP interpreter, 64bit
php-ipv6               7.4.2    The PHP interpreter, with IPv6 support

On which operating system(s) does the issue occur?

• [X] Linux
• [ ] MacOS
• [X] Windows

Steps to reproduce the issue.

$timeOffset = $database->getReference(".info/serverTimeOffset")->getValue();

Error message/Stack trace

In Database.php line 43:

The child key ".info" contains one of the following invalid characters: ".$#[]"

In Validator.php line 66:

The child key ".info" contains one of the following invalid characters: ".$#[]"

Additional information

No response

Describe the feature you would like to see

I just wondering if you find it fit to add batchImport method to this library. The API converts APNs tokens to Firebase tokens. I hope it will be a handy feature for iOS app developers, since the iOS devices give us APNs tokens instead of Firebase messaging tokens, which need to be converted in server side.

The API reference: https://developers.google.com/instance-id/reference/server#create_registration_tokens_for_apns_tokens

Using the Instance ID service's batchImport method, you can bulk import existing iOS APNs tokens to Google Cloud Messaging or Firebase Cloud Messaging, mapping them to valid registration tokens. Call the Instance ID service at this endpoint, providing a list of APNs tokens in the JSON body: https://iid.googleapis.com/iid/v1:batchImport The response body contains an array of Instance ID registration tokens ready to be used for sending FCM or GCM messages to the corresponding APNs device token.