[ 'client_id' => 'YOUR_GOOGLE_CLIENT_ID', 'client_secret' => 'YOUR_GOOGLE_CLIENT_SECRET', 'redirect_uri' => 'http://localhost/google_callback.php', ], 'facebook' => [ 'client_id' => 'YOUR_FACEBOOK_APP_ID', 'client_secret' => 'YOUR_FACEBOOK_APP_SECRET', 'redirect_uri' => 'http://localhost/facebook_callback.php', ], ];