https://www.facebook.com/v19.0/dialog/oauth?client_id=764862899548201&state=d49ff83d26f95fa2e77094be942d108e&response_type=code&sdk=php-sdk-5.7.0&redirect_uri=https%3A%2F%2Ftopcarnews.net%2Fauth%2Ffacebook_callback&scope=email%2Cpublic_profile