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

问题

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

Fatal error: Class 'Google_Service' not found in /home/myname/repos/website_current/lib/google-api-php-client/src/Google/Service/Oauth2.php on line 32

The code I am using (from my login.php file) looks like this

require_once(dirname($_SERVER['DOCUMENT_ROOT']).'/lib/autoload.php');
require('Google/Client.php');
require('Google/Service/Oauth2.php');
echo "exit";
exit();

I have added the include path in the PHP.ini (in /etc/php5/apache2/php.ini) as

include_path = ".:/usr/local/lib/php:/home/myname/repos/website_current/lib/google-api-php-client/src"

So its seems my Oauth2.php file can't see any of the other includes including the class 'Google_Service' which is one folder up in 'Service.php'.

My folder structure looks like this:

lib/
... autoload.php
... functions.php
... google-api-php-client/
    ... src/
        ... Google/ (etc etc)
public_html/
... login/
    ...login.php

I have no idea why this is occuring. The include path should be seen, and shows up as an included path using phpinfo(); Can someone please give me some insight?

回答1:

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.

回答2:

Per the instruction on github:

require_once 'google-api-php-client/autoload.php'; // or wherever autoload.php is located

In your case it seems like the above include url should work fine.

回答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)

回答4:

As of Nov 2016

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

回答5:

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';
//.....

回答6:

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"}}

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

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

回答7:

Now it is deprecated and moved to Sub Google directory. Following is the new default path: google-api-php-client-master\src\Google\autoload.php

回答8:

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.

来源：https://stackoverflow.com/questions/28351680/implementing-oauth2-login-fatal-error-class-google-service-not-found

标签

php

oauth-2.0

google-oauth

google-api-php-client