Google Analytics API - Authentication

analytics.php

<?php

/**
 * How to authenticate with OAuth2 by the Google API client
**/

$classLoader = require __DIR__.'/../vendor/autoload.php';
require_once __DIR__.'/../vendor/google/apiclient/src/Google/Client.php';
require_once __DIR__.'/../vendor/google/apiclient/src/Google/Service/Analytics.php';

session_start();

$client = new Google_Client();
$client->setApplicationName('BunkrTestAnalytics1');

$client->setClientId('my_big_client_id.apps.googleusercontent.com');
$client->setClientSecret('CLIENT_SECRET');
$client->setRedirectUri('http://'. $_SERVER['HTTP_HOST']. $_SERVER['PHP_SELF']);
// You need this scope for Analytics
$client->setScopes(array('https://www.googleapis.com/auth/analytics.readonly'));

if (isset($_GET['code'])) {
    $client->authenticate($_GET['code']);
    $_SESSION['token'] = $client->getAccessToken();
    header('Location: http://'. $_SERVER['HTTP_HOST']. $_SERVER['PHP_SELF']);
}

if (isset($_SESSION['token'])) {
  $client->setAccessToken($_SESSION['token']);
}

if (!$client->getAccessToken()) {
    $authUrl = $client->createAuthUrl();
    print "<a class='login' href='$authUrl'>Connect Me!</a>";
} else {
    // Create analytics service object. See next step below.
    $analytics = new Google_Service_Analytics($client);
    runDemo($analytics);
}

function runDemp($analytics) {
	// Here you make requests to the API
}

?>