It seems like, no matter what I do, Google is trying its very best to stop me from completing this research project. My project has me using a Google Spreadsheet as a database, and use the data from said spreadsheet to perform a programmatic Google Images search, and display a couple of the results to the end-user.
The setup instructions
I have started with following the instructions here: https://github.com/asimlqt/php-google-spreadsheet-client . I downloaded Composer to my computer, and then follow the instructions here and here to have Composer download the necessary libraries to my project.
The coding process From there, I tried to replicate what this guy was doing in his answer. In fact, here is my code:
<?php
require "vendor/autoload.php";
//require '/php-google-spreadsheet-client-master\src\Google\Spreadsheet\Autoloader.php';
use Google\Spreadsheet\DefaultServiceRequest;
use Google\Spreadsheet\ServiceRequestFactory;
const GOOGLE_CLIENT_ID = 'someClientID'; // here, I just pulled the default client ID from my Google Developers account
const GOOGLE_CLIENT_EMAIL = 'someClientEmail'; // I used the default client email here as well, again, straight from Google Developers account
const GOOGLE_CLIENT_KEY = 'someKey'; // I used the key that I used for the Google Custom Search Engine
const GOOGLE_CLIENT_KEY_PATH = 'vendor\google\apiclient\examples\key.p12'; // I did a search on my project folder for the .p12 file that had the key information, and used that path here
const G_CLIENT_KEY_PW = 'notasecret'; // the default (I don't know why I need to do this)
// setup the googleClient
$googleClient = new Google_Client();
$googleClient->setApplicationName('future-graph-611');
$googleClient->setClientId(GOOGLE_CLIENT_ID);
$googleClient->setAssertionCredentials(new Google_Auth_AssertionCredentials(
GOOGLE_CLIENT_EMAIL,
array('https://spreadsheets.google.com/feeds','https://docs.google.com/feeds'),
file_get_contents(GOOGLE_CLIENT_KEY_PATH), // Why can't I use the hard-coded GOOGLE_CLIENT_KEY here?
G_CLIENT_KEY_PW
));
//$googleClient->setAccessType('offline');
// get an accessToken
try
{
$googleClient->getAuth()->refreshTokenWithAssertion(); // the problem is here, on this line
}
catch (Google_Auth_Exception $exception)
{
echo $exception->getMessage();
}
$accessToken = json_decode($googleClient->getAccessToken());
$accessToken = $accessToken->access_token;
?>
For some reason, the statement in the try block is throwing Exception: Error refreshing the OAuth2 token, message: '{ "error" : "invalid_grant" }' .
What the heck am I doing wrong? What more do I need to do, so that this works??
