$client = new Google_Client(); $client->setClientId('YOUR_CLIENT_ID');
$config = [ 'google' => [ 'client_id' => 'YOUR_CLIENT_ID' ] ]; $client = new Google_Client(); $client->setClientId($config['google']['client_id']);In this example, the client ID is set using a configuration file that stores the client ID in an associative array. The setClientId method is then called to set the client ID for the Google API application. Package library: google/apiclient(PHP client library for Google APIs)