在php中实现firebase：在firebase中查找令牌

i am trying to implement firebase with php, here is a link that I found:

https://github.com/ktamas77/firebase-php

and this is an example.

const DEFAULT_URL = 'https://kidsplace.firebaseio.com/';
const DEFAULT_TOKEN = 'MqL0c8tKCtheLSYcygYNtGhU8Z2hULOFs9OKPdEp';
const DEFAULT_PATH = '/firebase/example';

$firebase = new \Firebase\FirebaseLib(DEFAULT_URL, DEFAULT_TOKEN);

// --- storing an array ---
$test = array(
    "foo" => "bar",
    "i_love" => "lamp",
    "id" => 42
);
$dateTime = new DateTime();
$firebase->set(DEFAULT_PATH . '/' . $dateTime->format('c'), $test);

// --- storing a string ---
$firebase->set(DEFAULT_PATH . '/name/contact001', "John Doe");

// --- reading the stored string ---
$name = $firebase->get(DEFAULT_PATH . '/name/contact001');

And here is my version of the same code:

<?php

include 'firebaseLib.php';

const DEFAULT_URL = "https://third-try-dae0a.firebaseio.com";
const DEFAULT_TOKEN = 'AIzaSyDeGfW4hnT3a6AXDevJMhb4Pi1eMWQ7yvc';
const DEFAULT_PATH = '/third-try-dae0a';


$firebase = new \Firebase\FirebaseLib(DEFAULT_URL, DEFAULT_TOKEN);

// --- storing an array ---
$test = array(
    "foo" => "bar",
    "i_love" => "lamp",
    "id" => 42
);
$dateTime = new DateTime();
$firebase->set(DEFAULT_PATH . '/' . $dateTime->format('c'), $test);

// --- storing a string ---
$firebase->set(DEFAULT_PATH . '/name/contact001', "John Doe");

// --- reading the stored string ---
$name = $firebase->get(DEFAULT_PATH . '/name/contact001');

echo "done";



 ?>

my code doesn't work...

I just want a quick explanation of where I find the DEFAULT_TOKEN

and what about the DEFAULT_PATH ??

1) DEFAULT_PATH

Default path is your main project path. When you create new project on firebase. And when you will click on it you will get the path for it. Which is like: https://your_project_name-xxx.firebaseio.com

2)DEFAULT_TOKEN

Steps to get token from firebase console

->login open and open fire base console and select project

->Go to project setting from setting icon

->select serviceaccounts from menu

->select databasesecrets from left menu

->hover on secret and click on show button