How to count users from Firebase with PHP (Laravel 5.8)

问题

I'm trying to figure out how to count all registered users from the Firebase. I've only implemented the Firebase authentication and have not mannualy created a database.

I can't find a way to count or even get them from Firebase.

$serviceAccount = ServiceAccount::fromJsonFile(config_path('path-to-file.json'));
$firebase = (new Factory())
    ->withServiceAccount($serviceAccount)
    ->create();
$database = $firebase->getDatabase();

I've got a connection with the code above.

Also I tried to use the auth helper like:

$auth = $firebase->getAuth();
$users = $auth->listUsers($defaultMaxResults = 1000, $defaultBatchSize = 1000);

But the thing I only managed with this was getting the current user.

Anyone knows how to count all users / get them?

回答1:

👋 Hi, maintainer of the SDK you're using here :).

There is currently (as of 2019-08-29 and as far as I know) no way to directly get the number of registered users in a Firebase project except through iterating through all of them and counting them manually.

The fastest way to do this would be by using

$users = $auth->listUsers();

$userCount = iterator_count($users);

We have to use iterator_count here because Auth::listUsers() returns a Generator that behaves differently than the "usual" array: instead of fetching all the users at once, it will fetch the next batch only when we "need" it.

There are methods to convert an iterator to an array (iterator_to_array()) and to count all items of an iterator (iterator_count()), but under the hood, they will load all users into memory, which can become really expensive if you have thousands or hundreds of thousands of users.

For that reason, I would recommend not using iterator_to_array() but foreach when you want to work with the user records directly:

foreach ($users as $user) {
    /** @var \Kreait\Firebase\Auth\UserRecord $user */
    echo $user->uid;
}

as well as using iterator_count() only sparingly and cache the result when you have it.

PS: Did you know that there's now a Laravel Package for this SDK as well? 😅

来源：https://stackoverflow.com/questions/57698602/how-to-count-users-from-firebase-with-php-laravel-5-8

标签

php

laravel

firebase

firebase-authentication