What could be causing the "Daily Limit for Unauthenticated Use Exceeded" error in a PHP Google Login implementation?

The "Daily Limit for Unauthenticated Use Exceeded" error in a PHP Google Login implementation is typically caused by reaching the limit of API requests that can be made without authentication. To solve this issue, you need to set up authentication with Google API by obtaining and using OAuth credentials in your PHP code. 

// Set up Google API client with OAuth credentials
$client = new Google_Client();
$client->setAuthConfig('path/to/your/client_secret.json');
$client->setAccessType('offline');
$client->setApprovalPrompt('force');
$client->setRedirectUri('http://example.com/google-login.php');

// Authenticate user with Google API
$client->setAccessToken($_SESSION['access_token']);

// Make API requests using authenticated client
$service = new Google_Service_Oauth2($client);
$userInfo = $service->userinfo->get();
echo 'Hello, ' . $userInfo->getName();

Keywords

Google Login PHP Daily Limit Unauthenticated Use Error

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