PHP Google Calendar API - php

Question

At initial stages of setting this up in a project.
I have enabled it the Google Developer page and trying to follow quickstart quide
https://developers.google.com/calendar/quickstart/php
however as with most Google API tutorials this 'quickstart' does not work.
I am taken through the authorization pages and given a code which I enter in the terminal but after a long time I am just given the error
PHP Fatal error: Uncaught RuntimeException: Unable to read from stream in [site root]/vendor/guzzlehttp/psr7/src/Stream.php
Stack trace:
#0 [site root]/vendor/guzzlehttp/psr7/src/functions.php(382): GuzzleHttp\Psr7\Stream->read()
#1 [site root]/vendor/guzzlehttp/guzzle/src/Handler/StreamHandler.php(214): GuzzleHttp\Psr7\copy_to_stream()
#2 [site root]/vendor/guzzlehttp/guzzle/src/Handler/StreamHandler.php(133): GuzzleHttp\Handler\StreamHandler->drain()
#3 [site root]/vendor/guzzlehttp/guzzle/src/Handler/StreamHandler.php(50): GuzzleHttp\Handler\StreamHandler->createResponse()
#4 [site root]/vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php(66): GuzzleHttp\Handler\StreamHandler->__invoke()
#5 [site root]/vendor/guzzlehttp/guzzle/src/Middleware.php(29): GuzzleHttp\PrepareBodyMiddleware->__invoke()
#6 [site root]/vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php(70): GuzzleHtt in [site root]/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php on line 52
No token.json file is created however the directory is writable.

Answer 1

As suspected the Google code is wrong.
Changing the scope on line 16 allows it to run correctly.
$client->setScopes("https://www.googleapis.com/auth/calendar.readonly");
Full code:
<?php
require __DIR__ . '/vendor/autoload.php';
if (php_sapi_name() != 'cli') {
throw new Exception('This application must be run on the command line.');
}
/**
* Returns an authorized API client.
* #return Google_Client the authorized client object
*/
function getClient()
{
$client = new Google_Client();
$client->setApplicationName('Google Calendar API PHP Quickstart');
//$client->setScopes(Google_Service_Calendar::CALENDAR_READONLY);
$client->setScopes("https://www.googleapis.com/auth/calendar.readonly");
$client->setAuthConfig('credentials.json');
$client->setAccessType('offline');
$client->setPrompt('select_account consent');
// Load previously authorized token from a file, if it exists.
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
$tokenPath = 'token.json';
if (file_exists($tokenPath)) {
$accessToken = json_decode(file_get_contents($tokenPath), true);
$client->setAccessToken($accessToken);
}
// If there is no previous token or it's expired.
if ($client->isAccessTokenExpired()) {
// Refresh the token if possible, else fetch a new one.
if ($client->getRefreshToken()) {
$client->fetchAccessTokenWithRefreshToken($client->getRefreshToken());
} else {
// Request authorization from the user.
$authUrl = $client->createAuthUrl();
printf("Open the following link in your browser:\n%s\n", $authUrl);
print 'Enter verification code: ';
$authCode = trim(fgets(STDIN));
// Exchange authorization code for an access token.
$accessToken = $client->fetchAccessTokenWithAuthCode($authCode);
$client->setAccessToken($accessToken);
// Check to see if there was an error.
if (array_key_exists('error', $accessToken)) {
throw new Exception(join(', ', $accessToken));
}
}
// Save the token to a file.
if (!file_exists(dirname($tokenPath))) {
mkdir(dirname($tokenPath), 0700, true);
}
file_put_contents($tokenPath, json_encode($client->getAccessToken()));
}
return $client;
}
// Get the API client and construct the service object.
$client = getClient();
$service = new Google_Service_Calendar($client);
// Print the next 10 events on the user's calendar.
$calendarId = 'primary';
$optParams = array(
'maxResults' => 10,
'orderBy' => 'startTime',
'singleEvents' => true,
'timeMin' => date('c'),
);
$results = $service->events->listEvents($calendarId, $optParams);
$events = $results->getItems();
if (empty($events)) {
print "No upcoming events found.\n";
} else {
print "Upcoming events:\n";
foreach ($events as $event) {
$start = $event->start->dateTime;
if (empty($start)) {
$start = $event->start->date;
}
printf("%s (%s)\n", $event->getSummary(), $start);
}
}