Implementing Oauth2 login, Fatal error: Class 'Google_Service' not found

Question

I am updating my website\'s login system from LightOpenID to Google\'s Oauth 2.0.

When I require the Client.php and the Service/Oauth2.php I get an error

Answer 1

As of Nov 2016

require_once ... 'vendor/autoload.php';

Answer 2

Make sure you add the line BEFORE any other Google "require_once" lines.

require_once 'google-api-php-client/autoload.php';

I had it last and it had me scratching my head for a good 10 minutes.

Answer 3

The new way of doing this (circa early 2016) is

require_once("Google/autoload.php");

(Assuming you have already set your include path to have /path/to/google-api-php-client/src)

Answer 4

After following what Durandal had posted I tried it, but the new path for me is :

require_once 'google-api-php-client/src/Google/autoload.php';

Once I made this changed it worked. Thanks for the help.

Answer 5

While working with Google API integration

Fatal error: Class 'abc' not found

error comes when there is definitely something different between the library you have in composer.json above, and the library that is actually being auto-loaded.

had same problem just changed in my composer.json

{"require": {"google/apiclient": "1.0.*@beta"}}

to

{"require": {"google/apiclient": "2.0.*"}}

and then execute php composer.phar update (make sure you give right path for .phar file)

Answer 6

To this version https://github.com/google/google-api-php-client this is a posible solution

set_include_path("google-api-php-client/src/" . PATH_SEPARATOR . get_include_path());

//.....

require_once 'Google/Service.php';
//.....