/**
* Runs the example.
*/
function UseOAuthExample()
{
// Set the OAuth consumer key and secret. Anonymous values can be used for
// testing, and real values can be obtained by registering your application:
// http://code.google.com/apis/accounts/docs/RegistrationForWebAppsAuto.html
$oauthInfo = array('oauth_consumer_key' => 'anonymous', 'oauth_consumer_secret' => 'anonymous');
// Create the AdWordsUser and set the OAuth info.
$user = new AdWordsUser();
$user->SetOAuthInfo($oauthInfo);
$user->LogAll();
// Request a new OAuth token. Web applications should pass in a callback URL
// to redirect the user to after authorizing the token.
$user->RequestOAuthToken();
// Get the authorization URL for the OAuth token.
$authorizationUrl = $user->GetOAuthAuthorizationUrl();
// In a web application you would redirect the user to the authorization URL
// and after approving the token they would be redirected back to the
// callback URL, with the URL parameter "oauth_verifier" added. For desktop
// or server applications, spawn a browser to the URL and then have the user
// enter the verification code that is displayed.
printf("Log in to your AdWords account and open the following URL: %s\n", $authorizationUrl);
print 'After approving the token enter the verification code here: ';
$stdin = fopen('php://stdin', 'r');
$verifier = trim(fgets($stdin));
fclose($stdin);
// Upgrade the authorized token.
$user->UpgradeOAuthToken($verifier);
// An upgraded token does not expire and should be stored and reused for
// every request to the API.
$oauthInfo = $user->GetOAuthInfo();
print "OAuth authorization successful.\n";
print_r($oauthInfo);
// Get the number of campaigns in the account.
$campaignService = $user->GetService('CampaignService', ADWORDS_VERSION);
$selector = new Selector();
$selector->fields = array('Id');
$selector->paging = new Paging(0, 0);
$page = $campaignService->get($selector);
// Display number of campaigns.
printf("Found %d campaigns.\n", $page->totalNumEntries);
}