Looking for logging into the Facebook Php Sdk site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Facebook Php Sdk site. After that you can login as usual with your login credentials.
https://developers.facebook.com/docs/reference/php/
https://developers.facebook.com/docs/reference/php/3.2.3?locale=ja_JP
https://developers.facebook.com/docs/php/howto/example_facebook_login/
https://developers.facebook.com/docs/php/howto/example_facebook_login?locale=ja_JP
http://c-geru.com/as_blind_side/2017/04/facebookapiphp.html
https://noumenon-th.net/programming/2016/03/14/facebook-sdk-for-php-v5-0/
https://gray-code.com/php/imprementation-of-facebook-login/
https://qiita.com/nightyknite/items/10ab1853581265ef4bd6
https://benmarshall.me/facebook-php-sdk/
https://github.com/facebook/php-graph-sdk
https://manablog.org/php-facebook-login-mysql/
https://teratail.com/questions/135371
https://blog.leko.jp/post/facebook-login-with-php/