PHP

Firebase JWT User Authentication

See more Firebase Examples

Demonstrates how to authenticate a Firebase REST API call using a JSON service account private key. Chilkat2 PHP

<?php

use Chilkat2\AuthGoogle;
use Chilkat2\FileAccess;
use Chilkat2\Socket;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// First load the Firebase JSON private key into a string.
$fac = new FileAccess();
try {
    $jsonKey = $fac->ReadEntireTextFile('qa_data/firebase/fish-8abda-firebase-adminsdk-1ys3o-347d70d581.json', 'utf-8');

    // A JSON private key looks like this:

    // {
    //   "type": "service_account",
    //   "project_id": "fish-8abda",
    //   "private_key_id": "347e70d5810b92516905d2de12d292c16159375b",
    //   "private_key": "-----BEGIN PRIVATE KEY-----\nMIIEvwIBADANBgkqhkiG9 ...  KQRtMB1gBu3KQxgoA==\n-----END PRIVATE KEY-----\n",
    //   "client_email": "firebase-adminsdk-1ys3o@fish-8abda.iam.gserviceaccount.com",
    //   "client_id": "107827947504591332107",
    //   "auth_uri": "https://accounts.google.com/o/oauth2/auth",
    //   "token_uri": "https://accounts.google.com/o/oauth2/token",
    //   "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
    //   "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/firebase-adminsdk-1ys3o%40fish-8abda.iam.gserviceaccount.com"
    // }

    $gAuth = new AuthGoogle();
    $gAuth->JsonKey = $jsonKey;

    // Choose a scope.
    // The scope could be "https://www.googleapis.com/auth/firebase.database"
    // or
    // "https://www.googleapis.com/auth/firebase.database https://www.googleapis.com/auth/userinfo.email"

    $gAuth->Scope = 'https://www.googleapis.com/auth/firebase.database https://www.googleapis.com/auth/userinfo.email';

    // Request an access token that is valid for this many seconds.
    $gAuth->ExpireNumSeconds = 3600;

    // If the application is requesting delegated access:
    // The email address of the user for which the application is requesting delegated access,
    // then set the email address here. (Otherwise leave it empty.)
    $gAuth->SubEmailAddress = '';

    // Connect to www.googleapis.com using TLS (TLS 1.2 is the default.)
    // The Chilkat socket object is used so that the connection can be established
    // through proxies or an SSH tunnel if desired.
    $tlsSock = new Socket();
    $tlsSock->Connect('www.googleapis.com', 443, true, 5000);

    // Send the request to obtain the access token.
    $gAuth->ObtainAccessToken($tlsSock);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Examine the access token:
echo 'Firebase Access Token: ', $gAuth->AccessToken, "\n";

// Save the token to a file (or wherever desired).  This token is valid for 1 hour.
$fac->WriteEntireTextFile('qa_data/tokens/firebaseToken.txt', $gAuth->AccessToken, 'utf-8', false);