string(1611) "xxxxxxxxx Facebook\Helpers\FacebookRedirectLoginHelper Object
(
    [oAuth2Client:protected] => Facebook\Authentication\OAuth2Client Object
        (
            [app:protected] => Facebook\FacebookApp Object
                (
                    [id:protected] => 1270452746804433
                    [secret:protected] => e9dc4bf50405ded7430119be8c4b60a3
                )

            [client:protected] => Facebook\FacebookClient Object
                (
                    [enableBetaMode:protected] => 
                    [httpClientHandler:protected] => Facebook\HttpClients\FacebookCurlHttpClient Object
                        (
                            [curlErrorMessage:protected] => 
                            [curlErrorCode:protected] => 0
                            [rawResponse:protected] => 
                            [facebookCurl:protected] => Facebook\HttpClients\FacebookCurl Object
                                (
                                    [curl:protected] => 
                                )

                        )

                )

            [graphVersion:protected] => v3.2
            [lastRequest:protected] => 
        )

    [urlDetectionHandler:protected] => Facebook\Url\FacebookUrlDetectionHandler Object
        (
        )

    [persistentDataHandler:protected] => Facebook\PersistentData\FacebookSessionPersistentDataHandler Object
        (
            [sessionPrefix:protected] => FBRLH_
        )

    [pseudoRandomStringGenerator:protected] => Facebook\PseudoRandomString\RandomBytesPseudoRandomStringGenerator Object
        (
        )

)
"
<a href="https://www.facebook.com/v3.2/dialog/oauth?client_id=1270452746804433&state=ba59672cdbce2068ea15b39bfb209e1d&response_type=code&sdk=php-sdk-5.7.0&redirect_uri=https%3A%2F%2Fvivaria.it%2Fautorizzazione%2F&scope=public_profile%2Cinstagram_basic%2Cpages_show_list">
            Login With Facebook
        </a>